OBSERVE
The Winter and its Snowpack.
HEAVY? LIGHT?
Character and Sources of Storms?
Are Spring Conditions arriving with Spring?
Snowpack Status Sierra Reporting Stations
The
"Spring-O-Meter"
Just how early is spring arriving in your neighborhood? Find out .. .
US GEOLOGICAL SURVEY, February 23, 2017.
WINTER of 2018
All
High Sierra Weather Info
Latest Daily Snow Depth Summary
Daily Sierra Snowpack % of Normal pdf
Daily Snow-Water & Percent of Average
All Precipitation-Snow Data
All Snow Surveys
SWC & Snow Depth
Summer of 2018 Backpacking Plans?
Yosemite-Hoover-Desolation
&
John Muir Trail Hikers:
Time to
Order Next Year's Permits!
Reserved permits for June 2018 now available from Yosemite, Hoover, and Desolation Wilderness Areas. In other words, Yosemite, Desolation, and Hoover Wilderness Areas all offer advanced reservations about six months ahead of your desired hiking dates.
This means now is the time to get your JMT permit application, along with other popular hikes, into the Man.
Feb 18
Last year, during 2017, at this point in time I was estimating a powerful, potentially catastrophic Spring Thaw.
We had snow along the Sierra Crest through the whole Summer. Again, each year's thaw depends on the Winter snowpack against the profile of Spring temps and precip.
All Permits
Yosemite Permits Desolation Wilderness
All Snow Information
December
Road News & Status Links |
27
End of February
Next Week
Top
Summer Hiking
Plans
Permits
Question
Are our permit/hiking plans & times In agreement with the progress to Spring?
2017 ANSWER
Hoover Wilderness
Permit Reservations
now accepted
Top
Next Week
Next Week |
28
Winter of 2018
latest Reports
BETWEEN FRONTS
Cold Clouds to CLEAR
Stronger
Cold Northern Front
Approaches
Arrived Evening-Time
COLD
WARNING
STORM WARNINGS
NATIONAL HAZARD MAP
ALL HIGH SIERRA FORECASTS
Surface
Low Pressure Tracks
2018
HIGH SIERRA
--WINTER--
Temp-Snow Check
After the 21st* weak Front-"storm" this Fall & Winter.
The last fronts before this incident came across on the 26th of Feb.
Let's check our reporting station snow & temp readings.
Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and
24 hour high-low temps.
Last Report:
Feb 26, 2018
A NEW WATER YEAR
N Sierra Reporting Stations On a Map
Scroll over stations for snow & temps. Click for
full report.
South Sierra Stations
"+/- & =" below are changes since last reading.
Tahoe Basin
Watershed
Rubicon 14" -3
7618 feet
(17.4 H2O) +.3
26 & 14 -/-
Echo Peak 31 " -6
7652 feet
(26.5 ?H2O) -.1
30 & 13 -/-
American-Yuba Watersheds
Carson Pass 36" -2
8388 feet
(14.2" H2O) +.2
25 & 10 -/-
Carson-Walker
Watersheds
Ebbetts Pass 47 " +7
8660 feet
(20.5" H2O) +.8
26 & 9 -/-
Leavitt Lake 72 " +2
(errors)
9602 feet, East Flank
(19.7" H20) +.4
22
& 5 -/-
Marine Base
6748 feet East Flank
FULL REPORT
VIS-CHIL-WEA-MB-WIND
xx & xx:
(New readout page sucks... & Tech issues)
Mokelumne-Stanislaus Watersheds
Deadman Creek
9250 feet, West Flank
000.0 Snow (BAD?)
(18.60" ?H20) +.2(BAD?)
36
& 1 +/-
Tuolumne-Merced
Watersheds
Tenaya Lake 16.98" -1.98
8163 feet, West Flank
(12.48") ?H20 +.16
37
& 2 +/-
Tuolumne Meadows
8600 feet, West Flank
8.65" -.37
35
& -3 +/-
Tioga Pass/Dana
9798 feet
30.52" Snow +.61
--.--" H20) (ERROR?)
(Temps NONE)
Mammoth Mountain Ski
Mono Lake-Owens Basin
Gem Pass
10750 feet
SNO " Depth Suspect
(12.08" H2O) +.13 Suspect Suspect
temps suspect
Mammoth Pass
9500 feet
54.24" Snow +3.25
(15.88" H2O) +.32
36 & 8 +/-
South Lake Cabin
9580 feet, East Flank
(Snow BAD")
(16.2 H2O) +.1
38 & 1 +/-
Big Pine Sawmill
10200 feet, East Flank
3.1" Snow +1.5
32 & -2 +/-
Kings River
Bishop Pass
11972 feet
BAD- BAD
Charlotte Lake
10398 feet, West Flank
TEMPS ONLY
-- & -- BAD
(The coldest station)
Kern Watershed
Upr Tyndall Creek
11441 feet
26.11" Snow +2.16
32 & 6 +/-
(station
reporting again!)
All High Sierra
Reporting Stations
*We've had more than twenty-one fronts come across the Sierra, and periods of spitting snow, but only twenty-one fronts of any substance.
2017
Answer
I doubt it, if you expected to begin backpacking early this Spring/Summer without full snow gear...
Evidence
Skiing until July?
Record Snowpack
Impending HUGE Spring Thaw on the way.
The Feb 20 Backpacker alert discusses how this much snow can affect PCT & JMT hiker's plans:
BACKPACKER ALERT
February 20, 2017
PCT PLANS/START TIMES GOING TO BE ADJUSTED FOR
HEAVY SNOW
&
DANGEROUS THAW CONDITIONS THIS YEAR.
Next Week |
1
MODERATE-STRENGTH
WINTER STORM
Front Line Hit Last Night
Unstable Weather
COLD
WARNING
STORM WARNINGS
2018
Snowpack:
Percent of Average for
March 1.
(Change since Feb 24.)
N Sierra: 20%
(+3%)
Cen. Sierra: 27%
(+4%)
S Sierra: 22%
(+3%)
Ca State: 24%
(+5%)
Last
Feb 24, 2018
Statewide Summary of Snow Water Content PDF
Next
March 5
2018
HIGH SIERRA
--WINTER--
Temp-Snow Check
During the 22nd* Front-"storm" this Fall & Winter.
The last fronts before this incident came across on the 26th of Feb.
Let's check our reporting station snow & temp readings.
Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and
24 hour high-low temps.
Last Report:
Feb 28, 2018
A NEW WATER YEAR
N Sierra Reporting Stations On a Map
Scroll over stations for snow & temps. Click for
full report.
South Sierra Stations
"+/- & =" below are changes since last reading.
Tahoe Basin
Watershed
Rubicon 21" +7
7618 feet
(18.1 H2O) +.7
35 & 18 +/+
Echo Peak 39 " +8
7652 feet
(27.4 ?H2O) +.9
35 & 18 +/+
American-Yuba Watersheds
Carson Pass 47" +11
8388 feet
(15.2" H2O) +1.0
31 & 10 +/=
Carson-Walker
Watersheds
Ebbetts Pass 52 " +5
8660 feet
(21.4" H2O) +1.7
37 & 14 +/+
Leavitt Lake 82 " +10
(errors)
9602 feet, East Flank
(19.6" H20) -.1
33
& 17 +/+
Marine Base
6748 feet East Flank
FULL REPORT
VIS-CHIL-WEA-MB-WIND
xx & xx:
(New readout page sucks... & Tech issues)
Mokelumne-Stanislaus Watersheds
Deadman Creek
9250 feet, West Flank
000.0 Snow (BAD?)
(18.72" ?H20) +.12(BAD?)
36
& 18 =/+
Tuolumne-Merced
Watersheds
Tenaya Lake 34.49" +17.51
8163 feet, West Flank
(12.48") ?H20 =.0
34
& 22 -/+
Tuolumne Meadows
8600 feet, West Flank
22.28" +13.68
34 & 20 -/+
Tioga Pass/Dana
9798 feet
43.59" Snow +13.07
23.33" H20) (ERROR?)
(Temps NONE)
Mammoth Mountain Ski
Mono Lake-Owens Basin
Gem Pass
10750 feet
SNO " Depth Suspect
(12.75" H2O) +.67 Suspect Suspect
temps suspect
Mammoth Pass
9500 feet
??.??" Snow +?.00
(16.64" H2O) +.76
36 & 16 =/+
South Lake Cabin
9580 feet, East Flank
(Snow BAD")
(16.2 H2O) =.0
37 & 18 -/+
Big Pine Sawmill
10200 feet, East Flank
6.1" Snow +3.0
30 & 16 -/+
Kings River
Bishop Pass
11972 feet
BAD- BAD
Charlotte Lake
10398 feet, West Flank
TEMPS ONLY
-- & -- BAD
(The coldest station)
Kern Watershed
Upr Tyndall Creek
11441 feet
27.86" Snow +1.75
32 & 15 =/+
(station
reporting again!)
All High Sierra
Reporting Stations
*We've had more than twenty-two fronts come across the Sierra, and periods of spitting snow, but only twenty-two fronts of any substance.
|
2
MODERATE-STRENGTH
THICK WINTER STORM
STEADY PRECIP ALL DAY
BIG SNOW DAY
COLD POWDER
COLD
WARNING
STORM WARNING
NATIONAL HAZARD MAP
ALL HIGH SIERRA FORECASTS
Next Week
2018
HIGH SIERRA
--WINTER--
Temp-Snow Check
During the 22nd* Front-"storm" this Fall & Winter.
The last fronts before this incident came across on the 26th of Feb.
Let's check our reporting station snow & temp readings.
Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and
24 hour high-low temps.
Last Report:
March 1, 2018
A NEW WATER YEAR
N Sierra Reporting Stations On a Map
Scroll over stations for snow & temps. Click for
full report.
South Sierra Stations
"+/- & =" below are changes since last reading.
Tahoe Basin
Watershed
Rubicon 40" +19
7618 feet
(20.0 H2O) +1.9
31 & 24 -/+
Echo Peak 57 " +18
7652 feet
(29.5 ?H2O) +3.
29 & 23 -/+
American-Yuba Watersheds
Carson Pass 61" +14
8388 feet
(16.7" H2O) +1.5
26 & 21 -/+
Carson-Walker
Watersheds
Ebbetts Pass 68 " +16
8660 feet
(24.3" H2O) +2.9
26 & 20 -/+
Leavitt Lake 109" +27
(errors)
9602 feet, East Flank
(22.7" H20) +3.1
27
& 18 -/+
Marine Base
6748 feet East Flank
FULL REPORT
VIS-CHIL-WEA-MB-WIND
xx & xx:
(New readout page sucks... & Tech issues)
Mokelumne-Stanislaus Watersheds
Deadman Creek
9250 feet, West Flank
000.0 Snow (BAD?)
(20.28" ?H20) +1.56(BAD?)
22
& 12 -/-
Tuolumne-Merced
Watersheds
Tenaya Lake 47.94" +13.45
8163 feet, West Flank
(12.48") ?H20 =.0
27
& 20 -/-
Tuolumne Meadows
8600 feet, West Flank
39.17" +16.89
34 & 20 -/+
Tioga Pass/Dana
9798 feet
52.22" Snow +8.63
23.33" H20) (ERROR?)
(Temps NONE)
Mammoth Mountain Ski
Mono Lake-Owens Basin
Gem Pass
10750 feet
SNO " Depth Suspect
(16.5" H2O) +3.75 Suspect Suspect
temps suspect
Mammoth Pass
9500 feet
??.??" Snow +?.00
(21.08" H2O) +4.44
22 & 16 -/=
South Lake Cabin
9580 feet, East Flank
(Snow BAD")
(16.2 H2O??) =.0
24 & 18 -/=
Big Pine Sawmill
10200 feet, East Flank
20.1" Snow +14.0
20 & 15 -/-
Kings River
Bishop Pass
11972 feet
BAD- BAD
Charlotte Lake
10398 feet, West Flank
TEMPS ONLY
-- & -- BAD
(The coldest station)
Kern Watershed
Upr Tyndall Creek
11441 feet
35.42" Snow +7.56
22 & 11 -/-
(station
reporting again!)
All High Sierra
Reporting Stations
*We've had more than twenty-two fronts come across the Sierra, and periods of spitting snow, but only twenty-two fronts of any substance.
Watersheds and Selected Network of Crestline Sensors
All Sierra Forecast Zones
All Precip Forecasts
2017
Cear and Warming
Top
|
3
Selected
Weather
Resources
Surface Low Pressure Tracks
Radar
Visible Satellites
Water Vapor Satellites
MAPS
Sierra Forecasts
Western US Forecasts
Precip Animation & Charts
Graphical Precip Forecast
All Sierra Snow Info
Sierra Sensor Networks
Watersheds and Selected Network of Crestline Sensors
High Sierra Highways
All Weather Information
Top
Next Week
Next Week
Next Week
2017
Overcast. First visible indication of slow moving Front descending from North after TEN DAYS of virtually no rain, which we really, really needed.
We did get light precip on Feb 25 & 26, but that was some very weak precip during an otherwise dry ten days.
Cold Semi-stationary Lows have been forming, persisting, and wandering about Gulf Alaska. These Lows also calved-off the Lows experienced on Feb 25-6, and have deepened and are pushing the impending Front coming tomorrow.
Our big High has begun to drop South over the past couple of days as these lows have strengthened.
Other Factors
Big T-Storms off NE Indonisia are firing up.
Arctic looks clear (big Highs)...and
All the pieces for whatever is coming this Spring are coming together in dynamic motion right now.
We will see.
2016
Very Light Rain,
Finally, "Winter-like" conditions followed by five days of lite precip.
Top |
4
CLEARING
COLD
WARNING
STORM WARNING
Winter of 2018
2018
HIGH SIERRA
--WINTER--
Temp-Snow Check
During the 22nd* Front-"storm" this Fall & Winter.
The last fronts before this incident came across on the 26th of Feb.
Let's check our reporting station snow & temp readings.
Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and
24 hour high-low temps.
Last Report:
March 2, 2018
A NEW WATER YEAR
N Sierra Reporting Stations On a Map
Scroll over stations for snow & temps. Click for
full report.
South Sierra Stations
"+/- & =" below are changes since last reading.
Tahoe Basin
Watershed
Rubicon 43" +3
7618 feet
(210.0 H2O) +1.0
25 & 14 -/-
Echo Peak 62 " +5
7652 feet
(31.3 ?H2O) +1.8
25 & 14 -/-
American-Yuba Watersheds
Carson Pass 62" +2
8388 feet
(17.6" H2O) +.9
29 & 13 +/-
Carson-Walker
Watersheds
Ebbetts Pass 70" +2
8660 feet
(26.2" H2O) +1.9
22 & 12 -/-
Leavitt Lake 118" +9
(errors)
9602 feet, East Flank
(23.0" H20) +0.3
27
& 18 -/+
Marine Base
6748 feet East Flank
FULL REPORT
VIS-CHIL-WEA-MB-WIND
xx & xx:
(New readout page sucks... & Tech issues)
Mokelumne-Stanislaus Watersheds
Deadman Creek
9250 feet, West Flank
000.0 Snow (BAD?)
(21.48" ?H20) +1.2(BAD?)
26
& 7 +/-
Tuolumne-Merced
Watersheds
Tenaya Lake 51.69" +3.75
8163 feet, West Flank
(12.83) ?H20 +.35
32
& 0 +/-
Tuolumne Meadows
8600 feet, West Flank
38.74" -.43
26 & -5 -/-
Tioga Pass/Dana
9798 feet
54.00" Snow +1.78
--.--" H20) (ERROR?)
(Temps NONE)
Mammoth Mountain Ski
Mono Lake-Owens Basin
Gem Pass
10750 feet
SNO " Depth Suspect
(17.33" H2O) +.83 Suspect Suspect
temps suspect
Mammoth Pass
9500 feet
??.??" Snow +?.00
(23.84" H2O) +2.76
31 & 2 +/-
South Lake Cabin
9580 feet, East Flank
(Snow BAD")
(16.4 H2O??) +.2
31 & -3 +/-
Big Pine Sawmill
10200 feet, East Flank
16.4" Snow -3.7
22 & -7 +/-
Kings River
Bishop Pass
11972 feet
BAD- BAD
Charlotte Lake
10398 feet, West Flank
TEMPS ONLY
-- & -- BAD
(The coldest station)
Kern Watershed
Upr Tyndall Creek
11441 feet
37.27" Snow +1.85
25 & -2 +/-
(station
reporting again!)
All High Sierra
Reporting Stations
*We've had more than twenty-two fronts come across the Sierra, and periods of spitting snow, but only twenty-two fronts of any substance.
Watersheds and Selected Network of Crestline Sensors
All Sierra Forecast Zones
All Precip Forecasts
2017
Overcast. Cooling. Late heavy precip from slow moving Front descending from North.
Top |
5
CLEAR
COLD
WARNING
AVALANCHE THREAT
2018
Snowpack:
Percent of Average for
March 5.
(Change since Feb 1.)
N Sierra: 30%
(+10%)
Cen. Sierra: 43%
(+16%)
S Sierra: 37%
(+15%)
Ca State: 37%
(+13%)
Last
Feb 24, 2018
March 1, 2018
Statewide Summary of Snow Water Content PDF
View of Sierra on March 5 by the...
MODIS
SIERRA SATELLITE
Top
2017
Cloudy but clearing.
Cold. Jet Stream out of NW bringing cold air.
Showers trailing slow moving Front that passed from the North.
The Weather Page
|
6
CLEAR to HAZY
COLD
WARNING
AVALANCHE THREAT
Weak Front to Southwest
After the Biggest Storms of the Winter of 2018, so far.
Warming Trend?
2018
HIGH SIERRA
--WINTER--
Temp-Snow Check
After the 22nd* Front-"storm" this Fall & Winter.
The last fronts before this incident came across on the 26th of Feb.
Let's check our reporting station snow & temp readings.
Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and
24 hour high-low temps.
Last Report:
March 4, 2018
A NEW WATER YEAR
N Sierra Reporting Stations On a Map
Scroll over stations for snow & temps. Click for
full report.
South Sierra Stations
"+/- & =" below are changes since last reading.
Tahoe Basin
Watershed
Rubicon 35" -8
7618 feet
(21.2 H2O) +.20
35 & 16 +/+
Echo Peak 54 " -8
7652 feet
(31.2 ?H2O) -.1
40 & 14 +/=
American-Yuba Watersheds
Carson Pass 55" -7
8388 feet
(17.7" H2O) +.1
37 & 6 +/-
Carson-Walker
Watersheds
Ebbetts Pass 61 " -9
8660 feet
(26.3" H2O) +.1
40 & 11 +/-
Leavitt Lake 111" -7
(errors)
9602 feet, East Flank
(24.1" H20) +1.1
40
& 18 +/=
Marine Base
6748 feet East Flank
FULL REPORT
VIS-CHIL-WEA-MB-WIND
xx & xx:
(New readout page sucks... & Tech issues)
Mokelumne-Stanislaus Watersheds
Deadman Creek
9250 feet, West Flank
000.0 Snow (BAD?)
(21.72" ?H20) +.24(BAD?)
47
& 6 +/-
Tuolumne-Merced
Watersheds
Tenaya Lake 43.6" -8.09
8163 feet, West Flank
(12.93) ?H20 +.1
45
& 7 +/+
Tuolumne Meadows
8600 feet, West Flank
30.33" -8.41
48 & -1 +/+
Tioga Pass/Dana
9798 feet
47.64" Snow -6.36
--.--" H20) (ERROR?)
(Temps NONE)
Mammoth Mountain Ski
Mono Lake-Owens Basin
Gem Pass
10750 feet
SNO " Depth Suspect
(17.34" H2O) +.01 Suspect Suspect
temps suspect
Mammoth Pass
9500 feet
94.74" Snow +?.00
(24.00" H2O) +.16
49 & 13 +/+
South Lake Cabin
9580 feet, East Flank
(Snow BAD")
(16.4 H2O??) =.0
47 & -0 +/+
Big Pine Sawmill
10200 feet, East Flank
12.4" Snow -4.0
42 & 8 +/+
Kings River
Bishop Pass
11972 feet
BAD- BAD
Charlotte Lake
10398 feet, West Flank
TEMPS ONLY
-- & -- BAD
(The coldest station)
Kern Watershed
Upr Tyndall Creek
11441 feet
34.71" Snow -2.56
42 & 19 +/+
(station
reporting again!)
All High Sierra
Reporting Stations
*We've had more than twenty-two fronts come across the Sierra, and periods of spitting snow, but only twenty-two fronts of any substance.
Watersheds and Selected Network of Crestline Sensors
All Sierra Forecast Zones
All Precip Forecasts
The Critical QuestionSn
of 2017:
"What's
Next?"
2017
Currently
Cloudy but clearing, front passed South, High Building.
Cold Jet Stream out of NW bringing cold air.
Next 7 Days
Formation & activity of Lows to SW of Ca., above Hawaii are "firing up," but so is a High persisting off the Ca Coast.
Expect these Lows and the Hawaiian tropical moisture dragged up along their attendant front lines to be transported to the North around Ca. by this High over next 7 days.
Animated Weather Maps
Predicted Precip Animations & Charts
This forecast means California and the High Sierra are dodging a bullet.
Problems would have built up, rather than diminished if this currently impending bit of tropical activity was pointed at California and the Sierra.
Top |
7
LIGHT PRECIP
COLD
WARNING
AVALANCHE THREAT
Weak Low & Front
off
West Coast
NATIONAL HAZARD MAP
ALL HIGH SIERRA FORECASTS
All Temperatures
Graphical Interface
All Sat Views
All Snow Data
Last Week
Next Week
Last Week
Next Week
2017
Snow & Temps
|
8
CLOUDY-UNSTABLE
AVALANCHE THREAT
Weak Low & Front
off
West Coast
2018
HIGH SIERRA
--WINTER--
Temp-Snow Check
After the 22nd* Front-"storm" this Fall & Winter.
The last fronts before this incident came across on the 26th of Feb.
Let's check our reporting station snow & temp readings.
Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and
24 hour high-low temps.
Last Report:
March 4, 2018
A NEW WATER YEAR
N Sierra Reporting Stations On a Map
Scroll over stations for snow & temps. Click for
full report.
South Sierra Stations
"+/- & =" below are changes since last reading.
Tahoe Basin
Watershed
Rubicon 30" -5
7618 feet
(21.2 H2O) =.0
47 & 30 +/+
Echo Peak 50 " -4
7652 feet
(31.0 ?H2O) -.1
47 & 31 +/+
American-Yuba Watersheds
Carson Pass 49" -6
8388 feet
(17.7" H2O) =.0
45 & 24 +/+
Carson-Walker
Watersheds
Ebbetts Pass 58 " -3
8660 feet
(26.3" H2O) =.0
43 & 30 +/+
Leavitt Lake 104" -7
(errors)
9602 feet, East Flank
(24.0" H20) -.1
39
& 28 -/+
Marine Base
6748 feet East Flank
FULL REPORT
VIS-CHIL-WEA-MB-WIND
xx & xx:
(New readout page sucks... & Tech issues)
Mokelumne-Stanislaus Watersheds
Deadman Creek
9250 feet, West Flank
000.0 Snow (BAD?)
(21.6" ?H20) -.12(BAD?)
45
& 23 -/+
Tuolumne-Merced
Watersheds
Tenaya Lake 41.15" -2.45
8163 feet, West Flank
(12.93) ?H20 =.0
47
& 16 +/+
Tuolumne Meadows
8600 feet, West Flank
25.76" -4.57
47 & 16 -/+
Tioga Pass/Dana
9798 feet
44.29" Snow -3.35
--.--" H20) (ERROR?)
(Temps NONE)
Mammoth Mountain Ski
Mono Lake-Owens Basin
Gem Pass
10750 feet
SNO " Depth Suspect
(17.34" H2O) =.0 Suspect Suspect
temps suspect
Mammoth Pass
9500 feet
89.60" Snow -5.14
(24.12" H2O) +.12
47 & 23 -/+
South Lake Cabin
9580 feet, East Flank
(Snow BAD")
(16.4 H2O??) =.0
48 & 28 +/+
Big Pine Sawmill
10200 feet, East Flank
9.9" Snow -2.5
41 & 26 -/+
Kings River
Bishop Pass
11972 feet
BAD- BAD
Charlotte Lake
10398 feet, West Flank
TEMPS ONLY
-- & -- BAD
(The coldest station)
Kern Watershed
Upr Tyndall Creek
11441 feet
34.19" Snow -.52
38 & 22 -/+
(station
reporting again!)
All High Sierra
Reporting Stations
*We've had more than twenty-two fronts come across the Sierra, and periods of spitting snow, but only twenty-two fronts of any substance.
Watersheds and Selected Network of Crestline Sensors
All Sierra Forecast Zones
All Precip Forecasts
2017
Clear, Cool, and Warming.
High Building off Ca Coast
2017
Weather
Status & Potential |
9
CLOUDY-UNSTABLE
AVALANCHE THREAT
Snow Compressing...
Weak Lows & Front
off
CA SF West Coast,
Onshore High
UNSTABLE BUT WEAK
Last Week
Next Week
Top
2017
Clear, Cool with rising humidity, and Warming.
Big High off Ca Coast
|
10
CLOUDY-UNSTABLE
Top
Selected
Weather
Resources
Surface Low Pressure Tracks
Radar
Visible Satellites
Water Vapor Satellites
MAPS
Sierra Forecasts
Western US Forecasts
Precip Animation & Charts
Graphical Precip Forecast
All Sierra Snow Info
Sierra Sensor Networks
Watersheds and Selected Network of Crestline Sensors
High Sierra Highways
All Weather Information
Top
2017
Hazy, humid, and Warming.
High off Ca Coast
11:17-11:30 AM
Huge Lightening Storm Northeast of Reno, West of Pyramid Lake.
Last Week
Next Week
Top |
11
CLOUDY-CLEARING
REALTIME
High Sierra Crestline
Reporting Stations
(Compare with the 26th)
Rubicon
7618 feet
Echo Peak
7652 feet
Carson Pass
8388 feet
Ebbetts Pass
8660 feet
Leavitt Lake
9602 feet
Marine Base
6748 feet East Flank
Deadman Creek
9250 feet
Tenaya Lake
8163 feet
Tuolumne Meadows
8600 feet
Tioga Pass/Dana
9798 feet
Gem Pass
10750 feet
Mammoth Pass
9500 feet
South Lake Cabin
9580 feet
Big Pine Sawmill
10200 feet
Bishop Pass
11972 feet
Charlotte Lake
10398 feet
Upr Tyndall Creek
11441 feet
All High Sierra
Reporting Stations
Last Week
Next Week
Last Week
Next Week
2017
Clearing, Warming, Big stationary High along Ca Coast. |
12
CLEAR to CLOUDY
Two Lows off Coast of North America anchoring a front stretching from Hawaii to Aleutians just off the Coastline...
Both Moving North!
Medium-Light
Precip Afternoon-Evening
The Map
All Maps
WINTER STORM WARNING
View of Sierra on March 12 by the...
MODIS
SIERRA SATELLITE
All Sat Views
2018
HIGH SIERRA
--WINTER--
Temp-Snow Check
Before the 23nd* Front-"storm" this Fall & Winter.
The last fronts before this incident came across on the 6th of March.
Let's check our reporting station snow & temp readings.
Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and
24 hour high-low temps.
Last Report:
March 8, 2018
A NEW WATER YEAR
N Sierra Reporting Stations On a Map
Scroll over stations for snow & temps. Click for
full report.
South Sierra Stations
"+/- & =" below are changes since last reading.
Tahoe Basin
Watershed
Rubicon 26" -4
7618 feet
(21.5 H2O) +.3
44 & 28 -/-
Echo Peak 43 " -7
7652 feet
(31.0 ?H2O) =.0
48 & 28 +/-
American-Yuba Watersheds
Carson Pass 43" -6
8388 feet
(17.8" H2O) +.1
49 & 25 +/+
Carson-Walker
Watersheds
Ebbetts Pass 49 " -9
8660 feet
(26.3" H2O) =.0
51 & 28 +/-
Leavitt Lake 97 " -7
(errors)
9602 feet, East Flank
(24.0" H20) -.1
47
& 25 +/-
Marine Base
6748 feet East Flank
FULL REPORT
VIS-CHIL-WEA-MB-WIND
xx & xx:
(New readout page sucks... & Tech issues)
Mokelumne-Stanislaus Watersheds
Deadman Creek
9250 feet, West Flank
000.0 Snow (BAD?)
(21.6" ?H20) =.00(BAD?)
48
& 21 +/-
Tuolumne-Merced
Watersheds
Tenaya Lake 34.78" -6.37
8163 feet, West Flank
(12.95) ?H20 +.2
53
& 23 +/+
Tuolumne Meadows
8600 feet, West Flank
18.6" -7.16
50 & 18 +/+
Tioga Pass/Dana
9798 feet
39.21" Snow -5.08
--.--" H20) (ERROR?)
(Temps NONE)
Mammoth Mountain Ski
Mono Lake-Owens Basin
Gem Pass
10750 feet
SNO " Depth Suspect
(17.29" H2O) -.05 Suspect Suspect
temps suspect
Mammoth Pass
9500 feet
89.60" Snow -11.0
(24.44" H2O) +.32
52 & 26 +/+
South Lake Cabin
9580 feet, East Flank
(Snow BAD")
(16.5 H2O??) +.1
52 & 21 +/-
Big Pine Sawmill
10200 feet, East Flank
7.7" Snow -2.2
42 & 18 +/-
Kings River
Bishop Pass
11972 feet
BAD- BAD
Charlotte Lake
10398 feet, West Flank
TEMPS ONLY
-- & -- BAD
(The coldest station)
Kern Watershed
Upr Tyndall Creek
11441 feet
34.19" Snow -1.28
59 & 23 +/+
(station
reporting again!)
All High Sierra
Reporting Stations
*We've had more than twenty-three fronts come across the Sierra, and periods of spitting snow, but only twenty-three fronts of any substance.
Watersheds and Selected Network of Crestline Sensors
All Sierra Forecast Zones
All Precip Forecasts
2017
Clear, Warm, stationary Big High along Ca Coast.
FUTURE
High dropping South on 14th, Lows consolidating & deepening in Gulf Alaska by 14th:
These are the
outlines of Tropical Moisture Transport Mechanism.
Will the system shift back to "Tropical Wet" mode? |
13
LIGHT PRECIP
Increasing this Evening
Random Downpours
Current Hazards
3-7 Day Hazard Outlook
The two Lows off the North American Coast are going to turn around, moving South, to affect us twice.
Top
Tahoe to Whitney
&
PCT--JMT hikers
TRAINING TIME
Order food, prep resupply packages, and repair gear.
Planning-Training. Resupply
How's the trajectory of the Winter towards the Spring Thaw?
That's going to determine the trajectory of access.
Winter of 2018
2018
HIGH SIERRA
--WINTER--
Temp-Snow Check
During the 23nd* Front-"storm" this Fall & Winter.
The last fronts before this incident came across on the 6th of March.
Let's check our reporting station snow & temp readings.
Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and
24 hour high-low temps.
Last Report:
March 12, 2018
A NEW WATER YEAR
N Sierra Reporting Stations On a Map
Scroll over stations for snow & temps. Click for
full report.
South Sierra Stations
"+/- & =" below are changes since last reading.
Tahoe Basin
Watershed
Rubicon 24" -2
7618 feet
(22.0 H2O) +.5
50 & 34 +/+
Echo Peak 46 "+3
7652 feet
(32.4 ?H2O) +1.4
49 & 34 +/+
American-Yuba Watersheds
Carson Pass 50" +7
8388 feet
(18.6" H2O) +.8
47 & 30 -/+
Carson-Walker
Watersheds
Ebbetts Pass 56 " +7
8660 feet
(27.1" H2O) +.8
47 & 31 -/+
Leavitt Lake 101" +4
(errors)
9602 feet, East Flank
(26.8" H20) +2.8
41
& 31 -/+
Marine Base
6748 feet East Flank
FULL REPORT
VIS-CHIL-WEA-MB-WIND
46 & 38
(New readout page sucks... & Tech issues)
Mokelumne-Stanislaus Watersheds
Deadman Creek
9250 feet, West Flank
000.0 Snow (BAD?)
(22.8" ?H20) +1.20(BAD?)
37
& 30 -/+
Tuolumne-Merced
Watersheds
Tenaya Lake 31.77" -3.01
8163 feet, West Flank
(13.41) H20 +.49
42
& 33-/+
Tuolumne Meadows
8600 feet, West Flank
17.04" -1.56
45 & 31 -/+
Tioga Pass/Dana
9798 feet
38.35" Snow -.85
--.--" H20) (ERROR?)
(Temps NONE)
Mammoth Mountain Ski
Mono Lake-Owens Basin
Gem Pass
10750 feet
SNO " Depth Suspect
(17.99" H2O) +.7 Suspect Suspect
temps suspect
Mammoth Pass
9500 feet
77.71" Snow -11.89
(24.6" H2O) +.16
39 & 30 -/+
South Lake Cabin
9580 feet, East Flank
(Snow BAD")
(16.5 H2O??) =.0
42 & 32 -/+
Big Pine Sawmill
10200 feet, East Flank
7.8" Snow +.1
38 & 30 -/+
Kings River
Bishop Pass
11972 feet
BAD- BAD
Charlotte Lake
10398 feet, West Flank
TEMPS ONLY
-- & -- BAD
(The coldest station)
Kern Watershed
Upr Tyndall Creek
11441 feet
33.8" Snow -.39
38 & 26 -/+
(station
reporting again!)
All High Sierra
Reporting Stations
*We've had more than twenty-three fronts come across the Sierra, and periods of spitting snow, but only twenty-three fronts of any substance.
Watersheds and Selected Network of Crestline Sensors
All Sierra Forecast Zones
All Precip Forecasts
2017
Snow & Temps
Top |
14
LIGHT PRECIP
Clearing Afternoon
&
Evening
COLD
WARNING
All Snow Data
Surface Low Pressure Tracks
2018
Snowpack:
Percent of Average for
March 14
+/- change since
March 5
N Sierra: 32%
(+2%)
Cen. Sierra: 43%
(+0%)
S Sierra: 38%
(+1%)
Ca State: 38%
(+1%)
Last
March 5, 2018
March 1, 2018
Feb 24, 2018
Statewide Summary of Snow Water Content PDF
2018
HIGH SIERRA
--WINTER--
Temp-Snow Check
During tail end of the 23nd* Front-"storm" this Fall & Winter.
The last fronts before this incident came across on the 6th of March.
Let's check our reporting station snow & temp readings.
Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and
24 hour high-low temps.
Last Report:
March 13, 2018
A NEW WATER YEAR
N Sierra Reporting Stations On a Map
Scroll over stations for snow & temps. Click for
full report.
South Sierra Stations
"+/- & =" below are changes since last reading.
Tahoe Basin
Watershed
Rubicon 40" +16
7618 feet
(22.8 H2O) +.8
45 & 28 -/-
Echo Peak 63 "+17
7652 feet
(33.6 ?H2O) +1.2
43 & 28 -/-
American-Yuba Watersheds
Carson Pass 57" +7
8388 feet
(19.4" H2O) +.8
38 & 26 -/-
Carson-Walker
Watersheds
Ebbetts Pass 67" +11
8660 feet
(28.2" H2O) +1.1
39 & 25 -/-
Leavitt Lke 117" +16
(errors)
9602 feet, East Flank
(27.6" H20) +.8
37
& 24 -/-
Marine Base
6748 feet East Flank
FULL REPORT
VIS-CHIL-WEA-MB-WIND
51 & 32 +/-
Mokelumne-Stanislaus Watersheds
Deadman Creek
9250 feet, West Flank
000.0 Snow (BAD?)
(23.28" ?H20) +.48(BAD?)
32
& 19 -/-
Tuolumne-Merced
Watersheds
Tenaya Lake 44.31" +12.54
8163 feet, West Flank
(13.41) ?H20 =.00
34
& 22 -/-
Tuolumne Meadows
8600 feet, West Flank
22.64" +5.6
36 & 20 -/-
Tioga Pass/Dana
9798 feet
43.31" Snow +4.96
--.--" H20) (ERROR?)
(Temps NONE)
Mammoth Mountain Ski
Mono Lake-Owens Basin
Gem Pass
10750 feet
SNO " Depth Suspect
(18.85" H2O) +.86 Suspect Suspect
temps suspect
Mammoth Pass
9500 feet
87.48" Snow +9.77
(27.16" H2O) +2.56
31 & 18 -/-
South Lake Cabin
9580 feet, East Flank
(Snow BAD")
(16.5 H2O??) =.0
32 & 20 -/-
Big Pine Sawmill
10200 feet, East Flank
12.6" Snow +4.8
30 & 17 -/-
Kings River
Bishop Pass
11972 feet
BAD- BAD
Charlotte Lake
10398 feet, West Flank
TEMPS ONLY
-- & -- BAD
(The coldest station)
Kern Watershed
Upr Tyndall Creek
11441 feet
37.91" Snow +4.1
27 & 13 -/-
(station
reporting again!)
All High Sierra
Reporting Stations
*We've had more than twenty-three fronts come across the Sierra, and periods of spitting snow, but only twenty-three fronts of any substance.
Watersheds and Selected Network of Crestline Sensor
2017
Clear, HOT, stationary Big High along Ca Coast.
|
15
MODERATE PRECIP
Steady
Two Persistant Weak Lows. One off the Coast of Inland Alaska/BC and the other off the coast of central Ca.
COLD
WARNING
STORM WARNINGS
REALTIME
High Sierra Crestline
Reporting Stations
With 24hr High-Low
Compare with Yesterday!
Rubicon
7618 feet
30 & 21 -/-
Echo Peak
7652 feet
29 & 21 -/-
Carson Pass
8388 feet
29 & 19 -/-
Ebbetts Pass
8660 feet
27 & 19 -/-
Leavitt Lake
9602 feet
26 & 15 -/-
Marine Base
6748 feet East Flank
36 & 23 -/-
Deadman Creek
9250 feet
33 & 8 +/-
Last Week
Next Week
Tenaya Lake
8163 feet
29 & 5 -/-
Tuolumne Meadows
8600 feet
30 & 6 -/-
Tioga Pass/Dana
9798 feet
Gem Pass
10750 feet
Mammoth Pass
9500 feet
26 & 12 -/-
South Lake Cabin
9580 feet
31 & 13 -/-
Big Pine Sawmill
10200 feet
28 & 11 -/-
Bishop Pass
11972 feet
Charlotte Lake
10398 feet
Upr Tyndall Creek
11441 feet
16 & 5 -/-
All High Sierra
Reporting Stations
Top
Last Week
Next Week
2017
Marine Layer, changing, Low consolidating in Gulf Alaska, stationary Big High along Ca Coast moving South.
2016
Sustained period of no rain beginning now until April 9 |
16
LIGHT PRECIP
Clearing Afternoon
COLD
WARNING
STORM WARNINGS
Top
Water Content
vs.
Snow Depth?
Last Week
Next Week
2018
HIGH SIERRA
--WINTER--
Temp-Snow Check
After the 23nd* Front-"storm" this Fall & Winter.
The last fronts before this incident came across on the 6th of March.
Let's check our reporting station snow & temp readings.
Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and
24 hour high-low temps.
Last Report:
March 14, 2018
A NEW WATER YEAR
N Sierra Reporting Stations On a Map
Scroll over stations for snow & temps. Click for
full report.
South Sierra Stations
"+/- & =" below are changes since last reading.
Tahoe Basin
Watershed
Rubicon 66" +26
7618 feet
(25.7 H2O) +3.1
27 & 19 -/-
Echo Peak 90" +27
7652 feet
(34.2 ?H2O) +.6
25 & 19 -/-
American-Yuba Watersheds
Carson Pass 81" +24
8388 feet
(21.6" H2O) +2.2
28 & 18 -/-
Carson-Walker
Watersheds
Ebbetts Pass 94 " +27
8660 feet
(28.6" H2O) +.4
23 & 15 -/-
Leavitt Lke 141" +24
(errors)
9602 feet, East Flank
(27.6" H20) =.??
19
& 10 -/-
Marine Base
6748 feet East Flank
FULL REPORT
VIS-CHIL-WEA-MB-WIND
33 & 16 -/-
Mokelumne-Stanislaus Watersheds
Deadman Creek
9250 feet, West Flank
000.0 Snow (BAD?)
(24.48" ?H20) +1.2(BAD?)
21
& 14 -/-
Tuolumne-Merced
Watersheds
Tenaya Lake 56.63" +12.32
8163 feet, West Flank
(13.41) ?H20 =.00
24
& 19 -/-
Tuolumne Meadows
8600 feet, West Flank
39.31" +16.67
23 & 15 -/-
Tioga Pass/Dana
9798 feet
58.34" Snow +15.03
--.--" H20) (ERROR?)
(Temps NONE)
Mammoth Mountain Ski
Mono Lake-Owens Basin
Gem Pass
10750 feet
SNO " Depth Suspect
(19.82" H2O) +.97 Suspect Suspect
temps suspect
Mammoth Pass
9500 feet
105.36" Snow +17.88
(28.84" H2O) +1.68
19 & 15 -/-
South Lake Cabin
9580 feet, East Flank
(Snow BAD")
(16.6 H2O??) +.1
25 & 15 -/-
Big Pine Sawmill
10200 feet, East Flank
12.6" Snow +4.8
30 & 17 -/-
Kings River
Bishop Pass
11972 feet
BAD- BAD
Charlotte Lake
10398 feet, West Flank
TEMPS ONLY
-- & -- BAD
(The coldest station)
Kern Watershed
Upr Tyndall Creek
11441 feet
45.6" Snow +7.69
24 & 11 -/-
(station
reporting again!)
All High Sierra
Reporting Stations
*We've had more than twenty-three fronts come across the Sierra, and periods of spitting snow, but only twenty-three fronts of any substance.
Watersheds and Selected Network of Crestline Sensors
All Sierra Forecast Zones
All Precip Forecasts
2017
Marine Layer, changing, Low consolidating in Gulf Alaska, stationary Big High along Ca Coast moving South, but reforming.
TTM setting up to begin Monday-Tuesday next?
(Tropical Transport Mechanism)
|
17
UNSTABLE
Light Precip
COLD
WARNING
The
Big Green
One
Saint Pat's Day
Equal Length of Day & Night
March 17
Sunrise Sunset
March Calendar
Winter of 2018
NATIONAL HAZARD MAP
ALL HIGH SIERRA FORECASTS
Selected Resources
Radar
Visible Satellites
Water Vapor Satellites
MAPS
Sierra Forecasts
Western US Forecasts
Precip Animation & Charts
Graphical Precip Forecast
All Sierra Snow Info
Sierra Sensor Networks
Watersheds and Selected Network of Crestline Sensors
High Sierra Highways
All Weather Information
Top
Last Week
Next Week
Last Week
Next Week
Top |
18
UNSTABLE
CLOUDY
Not Much Precip
COLD
WARNING
2018
HIGH SIERRA
--WINTER--
Temp-Snow Check
After the 23nd* Front-"storm" this Fall & Winter.
The last fronts before this incident came across on the 6th of March.
Let's check our reporting station snow & temp readings.
Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and
24 hour high-low temps.
Last Report:
March 16, 2018
A NEW WATER YEAR
N Sierra Reporting Stations On a Map
Scroll over stations for snow & temps. Click for
full report.
South Sierra Stations
"+/- & =" below are changes since last reading.
Tahoe Basin
Watershed
Rubicon 56" -10
7618 feet
(26.2 H2O) +.5
26 & 16 -/-
Echo Peak 81 " -9
7652 feet
(37.7 ?H2O) +3.5
26 & 15 +/-
American-Yuba Watersheds
Carson Pass 74" -7
8388 feet
(22.2" H2O) +.6
30 & 6 +/-
Carson-Walker
Watersheds
Ebbetts Pass 87" -7
8660 feet
(32.9" H2O) +4.3
28 & 12 +/-
Leavitt Lke 129" -12
(errors)
9602 feet, East Flank
(28.1" H20) +.5
22
& 9 +/-
Marine Base
6748 feet East Flank
FULL REPORT
VIS-CHIL-WEA-MB-WIND
32 & 8 -/-
Mokelumne-Stanislaus Watersheds
Deadman Creek
9250 feet, West Flank
000.0 Snow (BAD?)
(24.48" ?H20) +.36(BAD?)
36
& -7 +/-
Tuolumne-Merced
Watersheds
Tenaya Lake 52.23" -4.4
8163 feet, West Flank
(13.65) ?H20 +.24
33
& -3 +/-
Tuolumne Meadows
8600 feet, West Flank
33.18" -6.13
35 & -10 +/-
Tioga Pass/Dana
9798 feet
53.84" Snow -4.5
--.--" H20) (ERROR?)
(Temps NONE)
Mammoth Mountain Ski
Mono Lake-Owens Basin
Gem Pass
10750 feet
SNO " Depth Suspect
(19.82" H2O) =.00 Suspect Suspect
temps suspect
Mammoth Pass
9500 feet
105.36" Snow -9.7
(29.28" H2O) -.56
37 & 2 +/-
South Lake Cabin
9580 feet, East Flank
(Snow BAD")
(16.7 H2O??) +.1
39 & -4 +/-
Big Pine Sawmill
10200 feet, East Flank
15.7" Snow +3.1
28 & -5 -/-
Kings River
Bishop Pass
11972 feet
BAD- BAD
Charlotte Lake
10398 feet, West Flank
TEMPS ONLY
-- & -- BAD
(The coldest station)
Kern Watershed
Upr Tyndall Creek
11441 feet
43.16" Snow -2.44
28 & 0 +/-
(station
reporting again!)
All High Sierra
Reporting Stations
*We've had more than twenty-three fronts come across the Sierra, and periods of spitting snow, but only twenty-three fronts of any substance.
Watersheds and Selected Network of Crestline Sensors
All Sierra Forecast Zones
All Precip Forecasts
2017
Marine Layer, changing, Low breaking apart in Gulf Alaska, stationary Big High along Ca Coast moving & splitting apart, but reforming to the South.
We've had a Big High since the Sixth, beginning to break down since the 14th, and it's now lapsing.
This same High that has been transporting tropical moisture around its Northern perimeter, and around us, to points North of the Oregon border, mostly up through Seattle, is now moving far enough South to transport that moisture here.
Since the Sixth we've seen a constant line of weak Lows moving NE out of the SW which end up wandering around Gulf Alaska before dispelling or moving East
These Lows will roll across the Sierra if the High moves and stays South.
My focus moves to the Southwestern portion of the North Pacific when the High & Low patterns in the East Pacific off the California Coast "open" a sub-tropical transport alley between them.
When that happens I look to the traditional "hot spot" for storms off the NE coast of Indonesia.
The potentially monster storms born there can spew huge amounts of hot tropical moisture right to the top of the troposphere.
From that vantage point their disposition depends on the configuration and motions of Pacific Highs and Lows.
Right now a great storm off the coast of Indonesia has reached its end and is fizzling out:
Tropical Storm Activity
The other thing I look at is the water temps around there, off the NE coast of Indonesia. They appear to be chilling out.
Pacific Ocean Temps
Both the storm activity and the water temps were just "High and Hot," respectively, and have just relaxed as our potential storm window has opened up. Us Lucky Dogs! This reduces the moisture coming our way, for now.
Things could fire up again quite quickly. |
19
UNSTABLE
CLOUDY
No Precip
TRAINING TIME
Doing the JMT, PCT, TYT, TW?
If you are not training for the trip now you are an idiot.
WHY?
I Want Skittles!
Winter of 2018
NATIONAL HAZARD MAP
ALL HIGH SIERRA FORECASTS
Selected Resources
Radar
Visible Satellites
Water Vapor Satellites
MAPS
Sierra Forecasts
Western US Forecasts
Precip Animation & Charts
Graphical Precip Forecast
All Sierra Snow Info
Sierra Sensor Networks
Watersheds and Selected Network of Crestline Sensors
High Sierra Highways
All Weather Information
Top
Last Week
Next Week
Last Week
Next Week
2017
Snow & Temps
2017
Marine Layer, changing, Low breaking apart in Gulf Alaska, stationary Big High along Ca Coast moving & splitting apart, but reforming to the South.
No precip since the 6th.
Mountain Temps Cooling.
|
20
UNSTABLE
Weak Low
TROPICAL
Light Precip Early
Med Precip Late
WEATHER NOTE
Prime Equinox
Vernal Equinox
First Day of Spring
09:15 AM PDT in SF.
09:15 AM PDT in LA.
This is the first day of Nature's Year, if no longer of man's.
KILLER VIDEO
NAVIGATION SECTION:
PDT-PST
TIME OFFSETS
ALL
TIME RESOURCES
Now Winter ends and growth begins at this one of the two points our Earth is balanced between its annual extremes.
This Equinox could be called "heat and growth coming," the other, "heat and growth going."
These two Equinoxes are our year's major transition points.
May you find Fine Trails and Beautiful Vistas decorating many challenging and exciting backpacking trips through Nature's Wonders this upcoming new year and season.
Equal Length of Day & Night
March 17
Sunrise Sunset
March Calendar
2018
Snowpack:
Percent of Average for
March 20
+/- change since
March 14
N Sierra: 40%
(+8%)
Cen. Sierra: 55%
(+12%)
S Sierra: 43%
(+5%)
Ca State: 48%
(+10%)
Last
March 14, 2018
March 5, 2018
March 1, 2018
Feb 24, 2018
Statewide Summary of Snow Water Content PDF
Last Week
Next Week
2017
(2017-Light Precip)
2017
First of two weak fronts attached to two weak lows off the N Ca Coast.
Light Precip
Weak Lows have been wandering about Gulf Alaska for days...
|
21
Tropical Weather
Weak Low
TTM
Med to Heavy Precip
NEW
FANTASTIC FORECAST MODELS
Warm tropical moisture
Top
2018
HIGH SIERRA
--WINTER--
Temp-Snow Check
During the 24th* Front-"storm" this Fall & Winter.
The last fronts before this incident came across on the 13th of March.
Let's check our reporting station snow & temp readings.
Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and
24 hour high-low temps.
Last Report:
March 18, 2018
A NEW WATER YEAR
N Sierra Reporting Stations On a Map
Scroll over stations for snow & temps. Click for
full report.
South Sierra Stations
"+/- & =" below are changes since last reading.
Tahoe Basin
Watershed
Rubicon 46" -10
7618 feet
(28.2 H2O) +2.0
40 & 31 +/+
Echo Peak 72 " -9
7652 feet
(40.1 ?H2O) +2.4
38 & 33 +/+
American-Yuba Watersheds
Carson Pass 69" -5
8388 feet
(23.8" H2O) +1.6
38 & 25 +/+
Carson-Walker
Watersheds
Ebbetts Pass 85" -2
8660 feet
(34.7" H2O) +2.2
35 & 27 +/+
Leavitt Lke 134" +5
(errors)
9602 feet, East Flank
(28.9" H20) +.8
36
& 24 +/+
Marine Base
6748 feet East Flank
FULL REPORT
VIS-CHIL-WEA-MB-WIND
44 & 24 +/+
Mokelumne-Stanislaus Watersheds
Deadman Creek
9250 feet, West Flank
000.0 Snow (BAD?)
(25.8" ?H20) +1.32(BAD?)
37
& 31 +/+
Tuolumne-Merced
Watersheds
Tenaya Lake 47.35" -4.88
8163 feet, West Flank
(15.63) ?H20 +1.98
39
& 33 +/+
Tuolumne Meadows
8600 feet, West Flank
30.25" -2.93
32 & 29 -/+
Tioga Pass/Dana
9798 feet
57.62" Snow +3.78
--.--" H20) (ERROR?)
(Temps NONE)
Mammoth Mountain Ski
Mono Lake-Owens Basin
Gem Pass
10750 feet
SNO " Depth Suspect
(21.00" H2O) +1.18 Suspect Suspect
temps suspect
Mammoth Pass
9500 feet
108.56" Snow +3.2
(31.96" H2O) +2.68
34 & 29 -/+
South Lake Cabin
9580 feet, East Flank
(Snow BAD")
(17.1 H2O??) +.4
33 & 29 -/+
Big Pine Sawmill
10200 feet, East Flank
30.3" Snow +14.6
28 & 31 =/+
Kings River
Bishop Pass
11972 feet
BAD- BAD
Charlotte Lake
10398 feet, West Flank
TEMPS ONLY
-- & -- BAD
(The coldest station)
Kern Watershed
Upr Tyndall Creek
11441 feet
50.84" Snow +7.68
32 & 25 +/+
(station
reporting again!)
All High Sierra
Reporting Stations
*We've had more than twenty-three fronts come across the Sierra, and periods of spitting snow, but only twenty-three fronts of any substance.
Watersheds and Selected Network of Crestline Sensors
All Sierra Forecast Zones
All Precip Forecasts
Top
2017
Light Precip
Tails of two weak fronts attached to two weak lows off the N Ca Coast are dragging broken clouds to clearing conditions. The next Low & associated front is about a day out.
It's not these two storms this week we have to worry about. It's the third, much more powerful one now forming in the East Pac and moving our way. We are going to see serious problems if that storm is reinforced by tropical activity from off the NW coast of Indonesia.
Then, the prospect of an enduring series of warm tropical Spring rains on a record breaking snow pack brings the possibility of local and widespread catastrophic Spring thaw events.
Top
|
22
Tropical Weather
Weak Low
TTM
Med to Heavy Precip
Clearing & Cooling Evening
NATIONAL HAZARD MAP
ALL HIGH SIERRA FORECASTS
2018
Snowpack:
Percent of Average for
March 22
+/- change since
March 20
N Sierra: 43%
(+3%)
Cen. Sierra: 61%
(+6%)
S Sierra: 50%
(+7%)
Ca State: 52%
(+4%)
Last
March 20
March 14, 2018
March 5, 2018
March 1, 2018
Feb 24, 2018
Statewide Summary of Snow Water Content PDF
Last Week
Next Week
2017
Snow & Temps |
23
Clearing
Cool Air
Pending Arrival
Weak Low & Front from North
End of Tropical Precip
COLD
WARNING
2018
Snowpack:
Percent of Average for
March 23
+/- change since
March 22
N Sierra: 44%
(+1%)
Cen. Sierra: 65%
(+4%)
S Sierra: 57%
(+7%)
Ca State: 56%
(+3%)
Last
March 22
March 20
March 14, 2018
March 5, 2018
March 1, 2018
Feb 24, 2018
Statewide Summary of Snow Water Content PDF
2018
HIGH SIERRA
--WINTER--
Temp-Snow Check
After the 24th* Front-"storm" this Fall & Winter.
The last fronts before this incident came across on the 13th of March.
Let's check our reporting station snow & temp readings.
Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and
24 hour high-low temps.
Last Report:
March 21, 2018
A NEW WATER YEAR
N Sierra Reporting Stations On a Map
Scroll over stations for snow & temps. Click for
full report.
South Sierra Stations
"+/- & =" below are changes since last reading.
Tahoe Basin
Watershed
Rubicon 51" +5
7618 feet
(30.9 H2O) +2.7
37 & 22 -/-
Echo Peak 77 " +5
7652 feet
(43.4 ?H2O) +3.3
35 & 20 -/-
American-Yuba Watersheds
Carson Pass 83" +14
8388 feet
(26.6" H2O) +2.8
35 & 19 -/-
Carson-Walker
Watersheds
Ebbetts Pass 103 " +18
8660 feet
(39.5" H2O) +4.8
34 & 20 -/-
Leavitt Lke 152" +18
(errors)
9602 feet, East Flank
(29.9" H20) +1.0
33
& 20 -/-
Marine Base
6748 feet East Flank
FULL REPORT
VIS-CHIL-WEA-MB-WIND
42 & 27 -/-
Mokelumne-Stanislaus Watersheds
Deadman Creek
9250 feet, West Flank
000.0 Snow (BAD?)
(28.32" ?H20) +2.52(BAD?)
36
& 14 -/-
Tuolumne-Merced
Watersheds
Tenaya Lake 61.75" +14.4
8163 feet, West Flank
(15.81) ?H20 +0.18
37
& 8 -/-
Tuolumne Meadows
8600 feet, West Flank
42.23" +11.98
39 & 7 +/-
Tioga Pass/Dana
9798 feet
80.3" Snow +22.68
--.--" H20) (ERROR?)
(Temps NONE)
Mammoth Mountain Ski
Mono Lake-Owens Basin
Gem Pass
10750 feet
SNO " Depth Suspect
(22.98" H2O) +1.98 Suspect Suspect
temps suspect
Mammoth Pass
9500 feet
130.08" Snow +21.52
(36.64" H2O) +4.68
31 & 17 -/-
South Lake Cabin
9580 feet, East Flank
(Snow BAD")
(18.0 H2O??) +.9
38 & 16 +/-
Big Pine Sawmill
10200 feet, East Flank
44.9" Snow +14.6
32 &13 +/-
Kings River
Bishop Pass
11972 feet
BAD- BAD
Charlotte Lake
10398 feet, West Flank
TEMPS ONLY
-- & -- BAD
(The coldest station)
Kern Watershed
Upr Tyndall Creek
11441 feet
67.72" Snow +16.88
29 & 13 -/-
(station
reporting again!)
All High Sierra
Reporting Stations
*We've had more than twenty-three fronts come across the Sierra, and periods of spitting snow, but only twenty-three fronts of any substance.
Watersheds and Selected Network of Crestline Sensors
All Sierra Forecast Zones
All Precip Forecasts
2017
HIKER REPORT
2017
Hazy-Clearing. Break between Fronts.
Cayenne Reports
2017
Reports and assesses Spring and Summer High Sierra Prospects.
Cayenne
2017
Instagram Photo
Elephant Back BURIED
Elephant Back
|
24
Weak Front
&
Low
Descending
from Northwest
Dissapating
Cloudy to Clearing
COLD
WARNING
Last Week
Next Week
Selected Resources
Surface Low Pressure Tracks
Radar
Visible Satellites
Water Vapor Satellites
MAPS
Sierra Forecasts
Western US Forecasts
Precip Animation & Charts
Graphical Precip Forecast
All Sierra Snow Info
Sierra Sensor Networks
Watersheds and Selected Network of Crestline Sensors
High Sierra Highways
All Weather Information
Last Week
Next Week
Last Week
Next Week
2017
Front. Moderate intensity precip. Last bit passing Sierra during AM 25th.
Top
Last Week
Next Week |
25
Weak Front
&
Low
Descending
from Northwest
Dissapated
HIGH BUILDING IN
COLD
WARNING
2018
HIGH SIERRA
--WINTER--
Temp-Snow Check
After the 25th* Front-"storm" this Fall & Winter.
The last fronts before this incident came across on the 22nd of March.
Let's check our reporting station snow & temp readings.
Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and
24 hour high-low temps.
Last Report:
March 23, 2018
A NEW WATER YEAR
N Sierra Reporting Stations On a Map
Scroll over stations for snow & temps. Click for
full report.
South Sierra Stations
"+/- & =" below are changes since last reading.
Tahoe Basin
Watershed
Rubicon 53" +2
7618 feet
(31.0 H2O) +.1
30 & 16 -/-
Echo Peak 79" +2
7652 feet
(44.0 ?H2O) +.6
30 & 16 -/-
American-Yuba Watersheds
Carson Pass 84" +1
8388 feet
(27.4" H2O) +.8
31 & 14 -/-
Carson-Walker
Watersheds
Ebbetts Pass 101 " -2
8660 feet
(40.1" H2O) +.6
25 & 17 -/-
Leavitt Lke 152" +18
(errors)
9602 feet, East Flank
(30.91" H20) +.2
25
& 15 -/-
Marine Base
6748 feet East Flank
FULL REPORT
VIS-CHIL-WEA-MB-WIND
37 & 26 -/-
Mokelumne-Stanislaus Watersheds
Deadman Creek
9250 feet, West Flank
000.0 Snow (BAD?)
(29.04" ?H20) +0.72(BAD?)
30
& 7 -/-
Tuolumne-Merced
Watersheds
Tenaya Lake 61.53" -0.22
8163 feet, West Flank
(16.54) ?H20 +0.73
28
& 11 -/+
Tuolumne Meadows
8600 feet, West Flank
42.23" -2.00
29 & 14 -/+
Tioga Pass/Dana
9798 feet
74.6" Snow -5.6
--.--" H20) (ERROR?)
(Temps NONE)
Mammoth Mountain Ski
Mono Lake-Owens Basin
Gem Pass
10750 feet
SNO " Depth Suspect
(23.30" H2O) +.30 Suspect Suspect
temps suspect
Mammoth Pass
9500 feet
122.78" Snow -7.3
(37.52" H2O) +0.30
33 & 16 +/-
South Lake Cabin
9580 feet, East Flank
(Snow BAD")
(18.1 H2O??) +.1
33 & 13 -/-
Big Pine Sawmill
10200 feet, East Flank
38.2" Snow -6.7
26 & 11 -/-
Kings River
Bishop Pass
11972 feet
BAD- BAD
Charlotte Lake
10398 feet, West Flank
TEMPS ONLY
-- & -- BAD
(The coldest station)
Kern Watershed
Upr Tyndall Creek
11441 feet
61.49" Snow -6.23
28 & 9 -/-
(station
reporting again!)
All High Sierra
Reporting Stations
*We've had more than twenty-five fronts come across the Sierra, and periods of spitting snow, but only twenty-five fronts of any substance.
Watersheds and Selected Network of Crestline Sensors
All Sierra Forecast Zones
All Precip Forecasts
2017
Snow & Temps |
26
High
Off West Coast of USA
Clearing and Warming
Winter of 2018
last Reports
Spring of 2018
First Reports
Selected
Weather
Resources
Surface Low Pressure Tracks
Radar
Visible Satellites
Water Vapor Satellites
MAPS
Sierra Forecasts
Western US Forecasts
Precip Animation & Charts
Graphical Precip Forecast
All Sierra Snow Info
Sierra Sensor Networks
Watersheds and Selected Network of Crestline Sensors
High Sierra Highways
All Weather Information
Last Week
Next Month
Last Week
Next Month
2017
Front passed, Clearing, yet the sky kept spitting, "spray," an indication of the degree of saturation of this tropical air we are experiencing.
This wetness leaked over from the huge Low that moved North up the West Pac last week to the end of the Aleutian Chain today.
Beware warming temps bringing tropical rains!
This thing is going to warm up quickly, if the trends of the last 20 years continue through this Spring...
2017
Cayenne Reports
Dude, we had 180 mile ridge gust out here – INSANE!!! The cornices on some of the high altitude passes will not melt out on the north facing aspects this summer. NOAA is calling for over a foot of snow this weekend. The high country just keeps getting hit.
I did not even go into how many down trees, eroded trails and washed out bridges will be encountered. Not a good year for the novice backpacker or hiker. Can anybody say, “backcountry glissading accident or swift water rescue”?
Top |
27
High
Off West Coast of USA
Clear and Warm
Warm Days-Cold Nights
Summer Conditions
2018
Snowpack:
Percent of Average for
March 27
+/- change since
March 23
N Sierra: 48%
(+4%)
Cen. Sierra: 65%
(=%)
S Sierra: 56%
(-1%)
Ca State: 58%
(+2%)
Last
March 23
March 22
March 20
March 14, 2018
March 5, 2018
March 1, 2018
Feb 24, 2018
Statewide Summary of Snow Water Content PDF
2018
HIGH SIERRA
--WINTER--
Temp-Snow Check
After the 25th* Front-"storm" this Fall & Winter.
The last fronts before this incident came across on the 22nd of March.
Let's check our reporting station snow & temp readings.
Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and
24 hour high-low temps.
Last Report:
March 23, 2018
A NEW WATER YEAR
N Sierra Reporting Stations On a Map
Scroll over stations for snow & temps. Click for
full report.
South Sierra Stations
"+/- & =" below are changes since last reading.
Tahoe Basin
Watershed
Rubicon 47" -6
7618 feet
(31.4 H2O) +.4
33 & 29 +/+
Echo Peak 75" -5
7652 feet
(43.8 ?H2O) -.2
37 & 17 +/+
American-Yuba Watersheds
Carson Pass 87" -7
8388 feet
(27.5" H2O) +.2
33 & 13 +/-
Carson-Walker
Watersheds
Ebbetts Pass 93 " -8
8660 feet
(40.1" H2O) =.0
33 & 15 +/-
Leavitt Lke 144" -8
(errors)
9602 feet, East Flank
(30.3" H20) -.61
26
& 8 +/-
Marine Base
6748 feet East Flank
FULL REPORT
VIS-CHIL-WEA-MB-WIND
38 & 9 +/-
Mokelumne-Stanislaus Watersheds
Deadman Creek
9250 feet, West Flank
000.0 Snow (BAD?)
(29.16" ?H20) +0.12(BAD?)
45
& 17 +/+
Tuolumne-Merced
Watersheds
Tenaya Lake 56.91" -4.62
8163 feet, West Flank
(17.05) ?H20 +0.51
50
& 27 +/+
Tuolumne Meadows
8600 feet, West Flank
36.72" -5.51
47 & 11 +/-
Tioga Pass/Dana
9798 feet
69.04" Snow -5.56
--.--" H20) (ERROR?)
(Temps NONE)
Mammoth Mountain Ski
Mono Lake-Owens Basin
Gem Pass
10750 feet
SNO " Depth Suspect
(23.15" H2O) -.15 Suspect Suspect
temps suspect
Mammoth Pass
9500 feet
119.65" Snow -3.13
(37.52" H2O) =0.00
50 & 13 +/-
South Lake Cabin
9580 feet, East Flank
(Snow BAD")
(18.1 H2O??) =.0
33 & 13 -/-
Big Pine Sawmill
10200 feet, East Flank
38.2" Snow -6.7
50 & 5 +/-
Kings River
Bishop Pass
11972 feet
BAD- BAD
Charlotte Lake
10398 feet, West Flank
TEMPS ONLY
-- & -- BAD
(The coldest station)
Kern Watershed
Upr Tyndall Creek
11441 feet
62.5" Snow +1.01
35 & 13 +/+
(station
reporting again!)
All High Sierra
Reporting Stations
*We've had more than twenty-five fronts come across the Sierra, and periods of spitting snow, but only twenty-five fronts of any substance.
Watersheds and Selected Network of Crestline Sensors
All Sierra Forecast Zones
All Precip Forecasts
2017
Current Snowpack:
Percent of Average for
March 27.
N Sierra: 145%
Cen. Sierra: 174%
S Sierra: 166%
Ca State: 163%
Statewide Summary of Snow Water Content PDF
Last Reading:
March 1
|
28
High
Off West Coast of USA
Clear and Warm
Warm Days-Warm Nights
Top
2017
Snow & Temps
2017
Clear. Big High building off Coast of California.
Top |
29
High Weakens
Off West Coast of USA
Cloud Cover and Warm
Warm Days-Warm Nights
Last Week
Next Month
2017
Clear. Vast High building off Coast of California, Temps building.
Current
Pac Surface Map
General Weather Status
Tropical Activity Moderate off NE coast of Indonesia.
Vast Low in N Cen Pac sucking up most Tropical Moisture from Indonesia...
VAST HIGH OFF CA COAST deflecting most of the rest of this moisture around us.
TEMPS WARMING,
But still cool.
Our expanding stationary High will warm things up and begin the Spring Thaw in earnest during the next couple of days. |
30
High Weakens
Off West Coast of USA
Cloud Cover and Warm
Warm Days-Warm Nights
A bit Cooler
Selected
Weather
Resources
Surface Low Pressure Tracks
Radar
Visible Satellites
Water Vapor Satellites
MAPS
Sierra Forecasts
Western US Forecasts
Precip Animation & Charts
Graphical Precip Forecast
All Sierra Snow Info
Sierra Sensor Networks
Watersheds and Selected Network of Crestline Sensors
High Sierra Highways
All Weather Information
2017
Clear. Vast High building off Coast of California, Temps building. Windy
SAFETY FIRST
Cayenne's First Aid Approach
2017
"I honestly think that very few people will complete the PCT this year because the Cascades have had an amazing amount of snow too. Crater Lake, Mt. Bachelor, Mt. Hood and Mt. Baker are all having record snow years too." |
31
Instability
Off West Coast of USA
Cloud Cover and Warm
Warm Days-Warm Nights
A bit Cooler
A flurry of weak local Lows lay atop a great High Pressure Ridge off West Coast of USA.
No precip whatsoever
SUMMER
Backpackers
Time again to begin observing Winter transitioning into Spring
SPRING
Backpackers
Time to begin tracking the weather to find and get in this year's last snow trips before the Spring Thaw begins in Earnest.
2018
HIGH SIERRA
--WINTER--
Temp-Snow Check
After the 25th* Front-"storm" this Fall & Winter.
The last fronts before this incident came across on the 22nd of March.
Let's check our reporting station snow & temp readings.
Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and
24 hour high-low temps.
Last Report:
March 27, 2018
A NEW WATER YEAR
N Sierra Reporting Stations On a Map
Scroll over stations for snow & temps. Click for
full report.
South Sierra Stations
"+/- & =" below are changes since last reading.
Tahoe Basin
Watershed
Rubicon 44" -3
7618 feet
(31.4 H2O) =.0
57 & 38 +/+
Echo Peak 65" -10
7652 feet
(43.8 ?H2O) =.0
57 & 37 +/+
American-Yuba Watersheds
Carson Pass 67" -20
8388 feet
(27.5" H2O) =.0
56 & 30 +/+
Carson-Walker
Watersheds
Ebbetts Pass 82 " -11
8660 feet
(40.2" H2O) +.1
57 & 34 +/+
Leavitt Lke 135" -9
(errors)
9602 feet, East Flank
(39.6" H20) +9.3
51
& 32 +/+
Marine Base
6748 feet East Flank
FULL REPORT
VIS-CHIL-WEA-MB-WIND
65 & 22 +/+
Mokelumne-Stanislaus Watersheds
Deadman Creek
9250 feet, West Flank
000.0 Snow (BAD?)
(29.28" ?H20) +0.12(BAD?)
51
& 21 +/+
Tuolumne-Merced
Watersheds
Tenaya Lake 51.91" -5.00
8163 feet, West Flank
(17.05) ?H20 =0.00
56
& 26 +/-
Tuolumne Meadows
8600 feet, West Flank
31.09" -5.63
53 & 20 +/+
Tioga Pass/Dana
9798 feet
59.03" Snow -10.01
--.--" H20) (ERROR?)
(Temps NONE)
Mammoth Mountain Ski
Mono Lake-Owens Basin
Gem Pass
10750 feet
SNO " Depth Suspect
(22.68" H2O) -.47 Suspect Suspect
temps suspect
Mammoth Pass
9500 feet
106.38" Snow -13.27
(37.64" H2O) +.12
58 & 30 +/+
South Lake Cabin
9580 feet, East Flank
(Snow BAD")
(18.1 H2O??) =.0
59 & 26 +/+
Big Pine Sawmill
10200 feet, East Flank
26.21" Snow -11.99
51 & 26 +/+
Kings River
Bishop Pass
11972 feet
BAD- BAD
Charlotte Lake
10398 feet, West Flank
TEMPS ONLY
-- & -- BAD
(The coldest station)
Kern Watershed
Upr Tyndall Creek
11441 feet
54.53" Snow -7.97
48 & 30 +/+
(station
reporting again!)
All High Sierra
Reporting Stations
*We've had more than twenty-five fronts come across the Sierra, and periods of spitting snow, but only twenty-five fronts of any substance.
Watersheds and Selected Network of Crestline Sensors
All Sierra Forecast Zones
All Precip Forecasts
2017
Clear. Vast High building off Coast of California, Temps building. Windy
Last Week
Next Month
Top |