April Snowstorm climbs the East Sierra
over
Carson Falls
Sitting below the Pacific Crest Trail on the Eastern Edge of Carson Iceberg Wilderness-Stanislaus National Forest

East Carson River just below PCT under April Snow.

Looking back, Northwest by the compass, as we climb South up into the East Carson River up towards the PCT under a light Snow in April of 2000. The PCT runs the ridge in the background. We'll get up there soon. At the position above we are climbing up to Carson Falls on our way following the East Carson River a bit short of nine miles up to the PCT. Entry was through Rodriquez Flat, above the town of Walker on Highway 395.

Trail Forum Map Miles and Elevations (PCT)

End of March

April 2019

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Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
LAST MONTH NEXT WEEK TOP April 2019 "Open" Spring Conditions? Typically, Access Depends on Conditions. Conditions on the ground, NOT a date on the calendar determines our gear and skills requirements. Spring has been clearing mountain trails earlier and earlier over the the last twenty-five years, and especially the previous seven years, before the Massive 2017 Snowpack. Short Winters & Early Thaws, such as 2015, 16, and 18, have been offset by the massive snow years of '17 & '19 . "Open" Spring Conditions? in 2019 Not a Chance. Spring Conditions are, & will be, Epic. NOT 2019 HUGE PACK ON THE CREST We're going to use our 2017 readings to give us some context & insight as to how this year's snow, similar to the levels of 2017, could melt-out: March 27 April 20 May 2 Tracking SPRING THAW 2019 2018 A Weak Snow Pack as of April 1 Spring of 2018 Danger We've seen a long trend of earlier and earlier Spring Openings of Sierra Crest Trails, creating expectations of early openings. This year was following trend until our wet March, bringing a quarter of normal snowpack up to half. Though this still bodes well for early starts on the PCT & JMT, the die is not yet cast. Warm Torrential Tropical Rains could yet scour the snow from the Sierra Crest, while a cold version of Tropical Rains could still deposit many more feet along the Sierra Crest and Flanks. Both would be "tail" events, with the most likely outcome being a quick Spring Thaw under warm conditions, and an earlier than "average" opening of Sierra Crest Trails. 2017 "Open" Spring Conditions? NOT 2017: HUGE PACK ON THE CREST The 2017 Spring Thaw was Under WINTER SNOW CONDITIONS 2016 A slightly below average snowpack More High Sierra Backpacker Information Guide Trailhead Guide Index High Sierra Magazine HIGH SIERRA TRAILS FORUMS HIGH SIERRA TOPICS FORUMS GEAR FORUMS GEAR LIST		26 MARCH Cloudy Overcast Clearing Middle AM Spring Showers 2019 Current Snowpack: Percent of Average for March 26. N Sierra: 155% +4% in 5 days Cen. Sierra:161% -1% in 5 days S Sierra: 154% =% in 5 days Ca State: 157% +1% in 5 days Last Reading March 21 Statewide Summary of Snow Water Content PDF 2019 MARCH 26 *HIGH SIERRA* --Spring-- 3rd Temp-Snow Check Last Report: March 25th, 2019 Next Report: March 28, 2019 Let's check our reporting station snow & temp readings after this day of light to moderate precip, preceeded by a full day of showers, preceeded by a dry day.... Click the stations below for their latest reports. Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and 24 hour high-low temps. A NEW WATER YEAR: LAST YEAR Total Precipitation 58 % of Average A NEW WATER YEAR: Reservoirs 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 Southwest Tahoe Trail Map with Stations PCT-TYT-TRT Rubicon 100" -1 7618 feet Trail Map (40.30 H2O) +0.1 43 & 33 +/+ PCT-TYT-TRT Echo Peak 128" -2" 7652 feet Stations Map (56.50 H2O) +0.1 42 & 33 =/+ American-Yuba Watersheds PCT-TYT Carson Pass 108" =0 8388 feet Trail Map Stations Map (40.40" H2O) +0.1 43 & 31 +/+ Carson-Walker Watersheds PCT-TYT Ebbetts Pass 123" -2 8660 feet Trail Map (41.30 H2O) +0.2 40 & 30 =/+ EAST FLANK Leavitt Lake 200" -1 9602 feet, East Flank Trail Map (58.90 H20) =0.0 35 & 28 -/- EAST FLANK Marine Base Cold Weather Training 6748 feet East Flank Trail Map Above FULL REPORT VIS-CHIL-WEA-MB- WIND 68 & 22 -/+ Mokelumne-Stanislaus Watersheds PCT-TYT Sonora Pass Kennedy Meadows RESUPPLY Deadman Creek 52.90" −0.03 9250 feet,West Flank, Trail Map (24.62" H20) =0.0" 37 & 28 +/+ Tuolumne-Merced Watersheds Tenaya Lake 109.70 −1.6" 8163 feet, West Flank Trail Map (14.43") H20 =0.0" 45 & 24 -/+ JMT-PCT-TYT Tuolumne Meadows 86.60" −1.0" 8600 feet, West Flank Trail Map (6.46") H20 =0.0" 42 & 20 -/+ Tioga Pass/Dana 96.20" −4.0 9798 feet Trail Map 11.62 H20 (+0.08) 38 & 23 -/+ Mammoth Mountain Mono Lake-Owens Basin East of PCT-JMT Above Gem Lake Gem Pass 156.50" +0.2 10750 feet Trail Map (34.49 H2O) −0.04 temps bad JMT-PCT Junction Devils Postpile 97.78" −1.85 8004 feet Trail Map Above (0.0) = 45 & 29 +/+ NE of JMT-PCT Mammoth Pass 162.00" Snow −1.98 9500 feet Trail Map 28.16" H2O =0.00 42 & 23 -/+ JMT-PCT E of Bear Ridge Volcanic Knob 106.00" −1.8" 10100 feet Trail Map (0.00) 44 & 21 -/+ East Flank South Lake Cabin (Snow removed ") 9580 feet, East Flank Trail Map (25.80 H2O) =0.00 41 & 29 -/+ East Flank Big Pine Sawmill 68.70" Snow −1.6 10200 feet, East Flank Trail Map Above 37 & 27 =/+ Kings River Just East JMT-PCT Bishop Pass --.-- 11972 feet Trail Map Above BAD- BAD Just West JMT-PCT Charlotte Lake 117.71" Snow−1.98 10398 feet, West Flank Trail Map 49.02 H2O +0.08 38 & 15 +/+ (Typically the coldest station) Kern Watershed JMT-PCT Upr Tyndall Creek 111.20" −1.31" 11441 feet Trail Map (x.xx" H2O +x.xx") 37 & 17 +/+ JMT Crabtree Meadow 58.25" Snow−1.57" 10,700 feet Trail Map (21.41 H2O) −0.49 40 & 16 +/+ All High Sierra Reporting Stations	27 MARCH Cloudy Overcast Showers Spring Showers 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 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 Cal Coop Snow Survey Last Reading: March 1 LAST MONTH NEXT WEEK TOP	28 MARCH Cloudy & Sunny Broken Clouds Spring Showers 2019 Current Snowpack: Percent of Average for March 28. N Sierra: 162% +7% in 2 days Cen. Sierra:164% +4% in 2 days S Sierra: 154% =% in 2 days Ca State: 161% +4% in 2 days Last Reading March 26 Next Reading April 2 Statewide Summary of Snow Water Content PDF What This Means 2019 MARCH 28 *HIGH SIERRA* --Spring-- 4th Temp-Snow Check Last Report: March 26th, 2019 Next Report: April 1 , 2019 Let's check our reporting station snow & temp readings after the last four days of light to moderate precip, & showers, preceeded by a dry day... Click the stations below for their latest reports. Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and 24 hour high-low temps. A NEW WATER YEAR: LAST YEAR Total Precipitation 58 % of Average A NEW WATER YEAR: Reservoirs 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 Southwest Tahoe Trail Map with Stations PCT-TYT-TRT Rubicon 109" +9 7618 feet Trail Map (42.20 H2O) +1.9 ? 35 & 24 -/- PCT-TYT-TRT Echo Peak 140" +12" 7652 feet Stations Map (58.70 H2O) +2.2 32 & 23 -/- American-Yuba Watersheds PCT-TYT Carson Pass 117" +9 8388 feet Trail Map Stations Map (42.50" H2O) +2.1 35 & 22 -/- Carson-Walker Watersheds PCT-TYT Ebbetts Pass 133" +10 8660 feet Trail Map (51.10 H2O) +9.8 ?? 31 & 21 -/- EAST FLANK Leavitt Lake 206" +6 9602 feet, East Flank Trail Map (59.10 H20) +0.2 29 & 19 -/- EAST FLANK Marine Base Cold Weather Training 6748 feet East Flank Trail Map Above FULL REPORT VIS-CHIL-WEA-MB- WIND 68 & 34 =/+ Mokelumne-Stanislaus Watersheds PCT-TYT Sonora Pass Kennedy Meadows RESUPPLY Deadman Creek 56.42" +3.52 9250 feet,West Flank, Trail Map (25.44" H20) +0.82" 26 & 15 -/- Tuolumne-Merced Watersheds Tenaya Lake 119.70 +10" 8163 feet, West Flank Trail Map (14.90") H20 =0.47" 36 & 24 -/= JMT-PCT-TYT Tuolumne Meadows 92.40" +5.8" 8600 feet, West Flank Trail Map (6.46") H20 =0.0" 41 & 21 -/+ Tioga Pass/Dana 104.10" +7.9 9798 feet Trail Map 11.68 H20 (+0.06) 29 & 18 -/- Mammoth Mountain Mono Lake-Owens Basin East of PCT-JMT Above Gem Lake Gem Pass 156.50" =0.0 ?? 10750 feet Trail Map (35.62 H2O) +1.13 temps bad JMT-PCT Junction Devils Postpile 101.66" +3.88 8004 feet Trail Map Above (0.0) = 35 & 28 -/- NE of JMT-PCT Mammoth Pass 171.54" Snow +9.54 9500 feet Trail Map 28.16" H2O =0.00 33 & 22 -/- JMT-PCT E of Bear Ridge Volcanic Knob 107.50" +1.5" 10100 feet Trail Map (0.00) 36 & 20 -/- East Flank South Lake Cabin (Snow removed ") 9580 feet, East Flank Trail Map (25.80 H2O) =0.00 36 & 23 -/- East Flank Big Pine Sawmill 71.00" Snow +2.3 10200 feet, East Flank Trail Map Above 30 & 20 -/- Kings River Just East JMT-PCT Bishop Pass --.-- 11972 feet Trail Map Above BAD- BAD Just West JMT-PCT Charlotte Lake 116.81" Snow−0.9 10398 feet, West Flank Trail Map 49.17 H2O +0.15 29 & 11 -/- (Typically the coldest station) Kern Watershed JMT-PCT Upr Tyndall Creek 109.94" −1.26" 11441 feet Trail Map (x.xx" H2O +x.xx") 27 & 11 -/- JMT Crabtree Meadow 57.15" Snow−1.10" 10,700 feet Trail Map (21.48 H2O) +0.07 30 & 8 -/- All High Sierra Reporting Stations 2017 Snow & Temps	29 MARCH Clear & Sweet Skeeter News & Thoughts All Trail News Clear Nights Bring COLD Hazards Modis Satellite Views (Compare 2017, 18, & 19) THE CURRENT SNOWPACK Current Conditions All Snow Information GRAPHICS Date-Adjustable Multi-Aspect High Sierra Snowpack Status THE 26TH NOAA-NOHRSC SNOWPACK The High Sierra 3-26-19 OBSERVATIONS All High Sierra Reporting Stations Temp & Snow Tables by Watershed and Highway Corridor LAST MONTH NEXT WEEK TOP	30 MARCH Clear & Sweet Clear Nights Bring COLD Hazards SAFETY FIRST Cayenne's First Aid Approach Tracking SPRING THAW 2019 What Up? Informative "Normal" Vs. Now Forcasts & Reality vs. Averages What's Next? BEST FORECASTS Precipitation General Quantitative Precipitation Forecasts: RAIN FORECASTS & MODELS Precipitation Geographic All High Sierra ZONE & POINT FORECASTS All High Sierra ZONE FORECASTS GRAPHICAL INTERFACE Forecast Winds? Weather? NorCal Graphics Region, SW US Forecast Temperatures Model Five Day Mean Low Temps Click Green "Latest" Model, observe using step button LAST MONTH NEXT WEEK TOP LAST MONTH NEXT WEEK TOP
Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
31 MARCH Clear & Sweet Afternoon Haze Which is warming... Clear Nights Bring COLD Hazards LAST WEEK NEXT WEEK TOP 2018 Snow Depths & Temp 2017	1 Cloudy Overcast Weak, Lazy Front Offshore Weak Showers Warming 2017 Current Snowpack: Percent of Average for April 1. N Sierra: 147% Cen. Sierra: 175% S Sierra: 166% Ca State: 164% Cal Coop Snow Survey Next 2017 Readings April 20 May 2 May 15 June 15 Mid-June HAZARDS 2019 APRIL 1 *HIGH SIERRA* --Spring-- 5th Temp-Snow Check Last Report: March 28th, 2019 Next Report: April 1, 2019 Let's check our reporting station snow & temp readings after the last three days of clarity since the last precip... Click the stations below for their latest reports. Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and 24 hour high-low temps. A NEW WATER YEAR: LAST YEAR Total Precipitation 58 % of Average A NEW WATER YEAR: Reservoirs The Thaw: It's Coming 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 Southwest Tahoe Trail Map with Stations PCT-TYT-TRT Rubicon 104" -5 7618 feet Trail Map (42.50 H2O) +0.5 47 & 37 +/+ PCT-TYT-TRT Echo Peak 131" -9" 7652 feet Stations Map (59.60 H2O) +0.9 50 & 38 +/+ American-Yuba Watersheds PCT-TYT Carson Pass 109" -8 8388 feet Trail Map Stations Map (42.60" H2O) +0.1 50 & 31 +/+ Carson-Walker Watersheds PCT-TYT Ebbetts Pass 125" -8 8660 feet Trail Map (57.10 H2O) +6.0 ??? 49 & 36 +/+ EAST FLANK Leavitt Lake 200" -6 9602 feet, East Flank Trail Map (50.20 H20) +1.1 46 & 34 +/+ EAST FLANK Marine Base Cold Weather Training 6748 feet East Flank Trail Map Above FULL REPORT VIS-CHIL-WEA-MB- WIND 71 & 23 +/- Mokelumne-Stanislaus Watersheds PCT-TYT Sonora Pass Kennedy Meadows RESUPPLY Deadman Creek 52.58" −3.84 9250 feet,West Flank, Trail Map (25.55" H20) +0.11" 44 & 23 +/+ Tuolumne-Merced Watersheds Tenaya Lake 111.60 −8.1" 8163 feet, West Flank Trail Map (15.47") H20 +0.57 " 52 & 22 +/- JMT-PCT-TYT Tuolumne Meadows 86.30" −6.1" 8600 feet, West Flank Trail Map (6.46") H20 =0.0" 51 & 18 +/- Tioga Pass/Dana 96.40" −7.7 9798 feet Trail Map 12.19 H20 (+0.51) 46 & 22 +/+ Mammoth Mountain Mono Lake-Owens Basin East of PCT-JMT Above Gem Lake Gem Pass 156.50" =0.0 ?? ?? 10750 feet Trail Map (35.58 H2O) −0.04 temps bad JMT-PCT Junction Devils Postpile 94.64" −7.02 8004 feet Trail Map Above (0.0) = 52 & 26 +/- NE of JMT-PCT Mammoth Pass 161.04" Snow −10.5 9500 feet Trail Map 28.16" H2O =0.00 ?? 50 & 28 +/+ JMT-PCT E of Bear Ridge Volcanic Knob 102.20" -5.3" 10100 feet Trail Map (0.00) 52 & 22 +/+ East Flank South Lake Cabin (Snow removed ") 9580 feet, East Flank Trail Map (25.80 H2O) =0.00 56 & 26 +/+ East Flank Big Pine Sawmill 66.10" Snow −4.9 10200 feet, East Flank Trail Map Above 47 & 22 +/+ Kings River Just East JMT-PCT Bishop Pass --.-- 11972 feet Trail Map Above BAD- BAD Just West JMT-PCT Charlotte Lake 110.14" Snow −6.67 10398 feet, West Flank Trail Map 49.45 H2O +0.28 43 & 23 +/+ (Typically the coldest station) Kern Watershed JMT-PCT Upr Tyndall Creek 105.74" −4.2" 11441 feet Trail Map (x.xx" H2O +x.xx") 43 & 22 +/+ JMT Crabtree Meadow 53.14" Snow −4.01" 10,700 feet Trail Map (21.56H2O) +0.08 46 & 24 +/+ All High Sierra Reporting Stations	2 Showers Front Crossing Ca Warming Moving into Higher Spring Temp Range still susceptible to very cold temps, but Averages are higher 2019 Current Snowpack: Percent of Average for April 2. N Sierra: 165% +3 % in 5 days Cen. Sierra: 165% +1 % in 5 days S Sierra: 153% -1 % in 5 days Ca State: 162% +1 % in 5 days Last Reading March 28 Next Reading April 8 Statewide Summary of Snow Water Content PDF Cal Coop Snow Survey WINTER Analysis Two Pieces Winter of 2019 The Drought is Over 2017 Snow Depths & Temps	3 Few-Light Showers Between Fronts 2018 Snowpack Percent of Average for April 3 +/- change since March 27 N Sierra: 41% (-7%) Cen. Sierra: 59% (-6%) S Sierra: 49% (-7%) Ca State: 51% (-7%) Last March 27 2019 APRIL 3 *HIGH SIERRA* --Spring-- 6th Temp-Snow Check Last Report: April 1, 2019 Next Report: April 7, 2019 Let's check our reporting station snow & temp readings after the last 2 days of showers, and light showers. Click the stations below for their latest reports. Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and 24 hour high-low temps. A NEW WATER YEAR: LAST YEAR Total Precipitation 58 % of Average A NEW WATER YEAR: Reservoirs The Thaw: It's Coming 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 Southwest Tahoe Trail Map with Stations PCT-TYT-TRT Rubicon 106" +2 7618 feet Trail Map (42.80 H2O) +0.3 40 & 31 -/- PCT-TYT-TRT Echo Peak 134" +3" 7652 feet Stations Map (61.60 H2O) +1.7 ?? 40 & 31 -/- American-Yuba Watersheds PCT-TYT Carson Pass 114" +5 8388 feet Trail Map Stations Map (43.70" H2O) +1.1 41 & 25 -/- Carson-Walker Watersheds PCT-TYT Ebbetts Pass 134" +9 8660 feet Trail Map (57.00 H2O) -0.1 ??? 39 & 27 -/- EAST FLANK Leavitt Lake 207" +7 9602 feet, East Flank Trail Map (61.40 H20) +11.2 !?? 39 & 25 -/- EAST FLANK Marine Base Cold Weather Training 6748 feet East Flank Trail Map Above FULL REPORT VIS-CHIL-WEA-MB- WIND 66 & 36 -/+ Mokelumne-Stanislaus Watersheds PCT-TYT Sonora Pass Kennedy Meadows RESUPPLY Deadman Creek 55.5" +2.92 9250 feet,West Flank, Trail Map (26.15" H20) +0.6" 36 & 16 -/- Tuolumne-Merced Watersheds Tenaya Lake 116.10 +4.5" 8163 feet, West Flank Trail Map (16.46") H20 +0.99" 45 & 14 -/- JMT-PCT-TYT Tuolumne Meadows 87.10" +0.8" 8600 feet, West Flank Trail Map (6.47") H20 +0.01" 44 & 12 -/- Tioga Pass/Dana 97.50" +1.1 9798 feet Trail Map 12.36 H20 (+0.17) 40 & 13 -/- Mammoth Mountain Mono Lake-Owens Basin East of PCT-JMT Above Gem Lake Gem Pass 156.50" =0.0 ?? ?? 10750 feet Trail Map (35.83 H2O) +0.25 temps bad JMT-PCT Junction Devils Postpile 94.84" +0.2 8004 feet Trail Map Above (0.0) = 44 & 21 -/- NE of JMT-PCT Mammoth Pass 163.74" Snow +2.7 9500 feet Trail Map 28.16" H2O =0.00 ?? 42 & 18 -/- JMT-PCT E of Bear Ridge Volcanic Knob 104.40" +2.2" 10100 feet Trail Map (0.00) 44 & 11 -/- East Flank South Lake Cabin (Snow removed ") 9580 feet, East Flank Trail Map (25.90 H2O) +0.10 49 & 13 -/- East Flank Big Pine Sawmill 66.30" Snow +0.2 10200 feet, East Flank Trail Map Above 41 & 11 -/- Kings River Just East JMT-PCT Bishop Pass --.-- 11972 feet Trail Map Above BAD- BAD Just West JMT-PCT Charlotte Lake 118.35" Snow +8.21 10398 feet, West Flank Trail Map 50.49 H2O +1.04 35 & 8 -/- (Typically the coldest station) Kern Watershed JMT-PCT Upr Tyndall Creek 112.29" +6.55" 11441 feet Trail Map (x.xx" H2O +x.xx") 39 & 12 -/- JMT Crabtree Meadow 55.07" Snow +1.93 " 10,700 feet Trail Map (21.56H2O) +0.31 41 & 10 -/- All High Sierra Reporting Stations	4 Cloudy Overcast Front Offshore SEE THE LATEST HIGH SIERRA NEWS 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. More High Sierra Backpacker Information Guide Trailhead Guide Index High Sierra Magazine HIGH SIERRA TRAILS FORUMS HIGH SIERRA TOPICS FORUMS GEAR FORUMS GEAR LIST LAST WEEK NEXT WEEK TOP	5 Showers Occl Front Crossing Ca BEST FORECASTS Precipitation General Quantitative Precipitation Forecasts: RAIN FORECASTS & MODELS Precipitation Geographic All High Sierra ZONE & POINT FORECASTS All High Sierra ZONE FORECASTS GRAPHICAL INTERFACE Forecast Winds? Weather? NorCal Graphics Region, SW US Forecast Temperatures Model Five Day Mean Low Temps Click Green "Latest" Model, observe using step button All Temps	6 Cloudy Overcast LAST WEEK NEXT WEEK TOP THE CURRENT SNOWPACK Current Conditions All Snow Information GRAPHICS Date-Adjustable Multi-Aspect High Sierra Snowpack Status THE 1st NOAA-NOHRSC SNOWPACK The High Sierra 4-1-19 OBSERVATIONS All High Sierra Reporting Stations Temp & Snow Tables by Watershed and Highway Corridor 2018 Snow Depths & Temps LAST WEEK NEXT WEEK TOP LAST WEEK NEXT WEEK TOP
Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
7 Cloudy-Overcast Clearing-Warming -Big High Building-In- Snow Steadily Diminishing since last reading 2019 APRIL 7 *HIGH SIERRA* --Spring-- 7th Temp-Snow Check Last Report: April 3, 2019 Next Report: April 14, 2019 Let's check our reporting station snow & temp readings after the last 2 days of weak showers, followed by two days of Overcast. Click the stations below for their latest reports. Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and 24 hour high-low temps. A NEW WATER YEAR: LAST YEAR Total Precipitation 58 % of Average A NEW WATER YEAR: Reservoirs The Thaw: It's Coming 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 Southwest Tahoe Trail Map with Stations PCT-TYT-TRT Rubicon 102" -4 7618 feet Trail Map (43.10 H2O) +0.3 50 & 37 +/+ PCT-TYT-TRT Echo Peak 129" -5" 7652 feet Stations Map (61.70 H2O) +0.1 48 & 36 +/+ American-Yuba Watersheds PCT-TYT Carson Pass 109" -5 8388 feet Trail Map Stations Map (43.80" H2O) +0.1 49 & 35 +/+ Carson-Walker Watersheds PCT-TYT Ebbetts Pass 125" -9 8660 feet Trail Map (58.90 H2O) +1.9 ??? 48 & 34 +/+ EAST FLANK Leavitt Lake 203" -4 9602 feet, East Flank Trail Map (62.20 H20) +0.8 43 & 33 +/+ EAST FLANK Marine Base Cold Weather Training 6748 feet East Flank Trail Map Above FULL REPORT VIS-CHIL-WEA-MB- WIND 65 & 30 -/- Mokelumne-Stanislaus Watersheds PCT-TYT Sonora Pass Kennedy Meadows RESUPPLY Deadman Creek 52.95" −2.55 9250 feet,West Flank, Trail Map (26.48" H20) +0.33" 44 & 32 +/+ Tuolumne-Merced Watersheds Tenaya Lake 110.80 −5.3" 8163 feet, West Flank Trail Map (16.67") H20 +0.21" 54 & 29 +/+ JMT-PCT-TYT Tuolumne Meadows 81.80" −5.3" 8600 feet, West Flank Trail Map (6.47") H20 =0.00" 50 & 27 +/+ Tioga Pass/Dana 91.90" −5.6 9798 feet Trail Map 12.36 H20 (+0.28) 46 & 29 +/+ Mammoth Mountain Mono Lake-Owens Basin East of PCT-JMT Above Gem Lake Gem Pass 156.50" =0.0 ?? ?? 10750 feet Trail Map (36.69 H2O) -0.14 temps bad JMT-PCT Junction Devils Postpile 90.12" −4.72 8004 feet Trail Map Above (0.0) = 55 & 28 +/+ NE of JMT-PCT Mammoth Pass 157.18" Snow −6.56 9500 feet Trail Map 28.16" H2O =0.00 ?? 53 & 29 +/+ JMT-PCT E of Bear Ridge Volcanic Knob 100.70" −3.7" 10100 feet Trail Map (0.00) 51 & 24 +/+ East Flank South Lake Cabin (Snow removed ") 9580 feet, East Flank Trail Map (25.90 H2O) =0.10 58 & 27 +/+ East Flank Big Pine Sawmill 64.00" Snow −2.3 10200 feet, East Flank Trail Map Above 47 & 24 +/+ Kings River Just East JMT-PCT Bishop Pass --.-- 11972 feet Trail Map Above BAD- BAD Just West JMT-PCT Charlotte Lake 109.84" Snow −8.51 10398 feet, West Flank Trail Map 50.49 H2O +0.32 44 & 21 +/+ (Typically the coldest station) Kern Watershed JMT-PCT Upr Tyndall Creek 104.44" −7.85" 11441 feet Trail Map (x.xx" H2O +x.xx") 41 & 24 +/+ JMT Crabtree Meadow 51.63" Snow −3.44" 10,700 feet Trail Map (21.56 H2O) +0.39 47 & 26 +/+ All High Sierra Reporting Stations 2018 Review Second Week of April 2018 Snow Depths & Temp 2017	8 Cloudy-Overcast Warm -Big High Building-In- 2019 Current Snowpack: Percent of Average for April 8. N Sierra: 166% +1 % in 6 days Cen. Sierra: 165% = % in 6 days S Sierra: 152% -1 % in 6 days Ca State: 162% = % in 6 days Last Reading April 2 Next Reading April 15 Statewide Summary of Snow Water Content PDF Cal Coop Snow Survey LAST WEEK NEXT WEEK TOP SPRING THAW RIVER INFORMATION RESERVOIRS HAZARDS 2017 Snow & Temps	9 Clear Warm-Windy Clear Nights Bring COLD Hazards Resupply Thoughts Moutain Safety Trail News General News More High Sierra Backpacker Information Guide Trailhead Guide Index High Sierra Magazine HIGH SIERRA TRAILS FORUMS HIGH SIERRA TOPICS FORUMS GEAR FORUMS GEAR LIST SEE THE LATEST HIGH SIERRA NEWS	10 Clear Warm-Windy Modis Satellite Views (Compare 2017, 18, & 19) THE CURRENT SNOWPACK Current Conditions All Snow Information GRAPHICS Date-Adjustable Multi-Aspect High Sierra Snowpack Status THE 7th NOAA-NOHRSC SNOWPACK The High Sierra 4-7-19 OBSERVATIONS All High Sierra Reporting Stations Temp & Snow Tables by Watershed and Highway Corridor 2018 Snow Depths & Temp 2018 Snowpack Percent of Average for April 10 +/- change since April 3 N Sierra: 36% (-5%) Cen. Sierra: 51% (-8%) S Sierra: 39% (-10%) Ca State: 43% (-8%) Last March 27 March 23 March 22 March 20 March 14, 2018 March 5, 2018 March 1, 2018 Feb 24, 2018 2017 Snow & Temps LAST WEEK NEXT WEEK TOP	11 Cloudy-Overcast Cool Breezes -Big High Building-In- BEST FORECASTS Precipitation General Quantitative Precipitation Forecasts: ALL RAIN FORECASTS & MODELS Seven Day Precip Animation Precipitation Geographic All High Sierra ZONE & POINT FORECASTS All High Sierra ZONE FORECASTS GRAPHICAL INTERFACE Forecast Winds? Weather? NorCal Graphics Region, SW US Forecast Temperatures Model Five Day Mean Low Temps Click Green "Latest" Model, observe using step button All Temps Let's look at the Big Picture Surface Map The Pacific Ocean US Weather Map All Maps	12 Clear Warm -Big High- Clear Nights Bring COLD Hazards All High Sierra Weather And the factors creating it A Year Comparable to 2019? 2017 NEXT 2017 SNOW READING April 20, 2017 PREVIOUS April 1 2018 Snow Depths & Temp 2018 Snowpack Percent of Average for April 12 +/- change since April 10 N Sierra: 35% (-1%) Cen. Sierra: 47% (-4%) S Sierra: 36% (-3%) Ca State: 41% (-2%) Last March 27 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	13 Cloudy-Overcast Let's look at the Big Picture Surface Map The Pacific Ocean US Weather Map All Maps LAST WEEK NEXT WEEK TOP SPRING THAW RIVER INFORMATION RESERVOIRS HAZARDS LAST WEEK NEXT WEEK TOP 2017 Snow & Temps LAST WEEK NEXT WEEK TOP
Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
14 Cloudy-Overcast Weak Front E of Offshore High Status & Evolution Spring Thaw of 2019 2018 Review Third Week of April 2017 2019 APRIL 14 *HIGH SIERRA* 8th --Spring-- Temp-Snow Check Last Report: April 7, 2019 Next Report: April 21, 2019 Let's check our reporting station snow & temp readings after the last 6 days ranging from unsettled to clear and warm, and back to the fringes of instability. Instability caused by a massive High sliding off and onto the West Coast of the USA, either deflecting moisture around us when its on the coast, or allowing Lows and Fronts around its Eastern Edge when its off the Coast. That's deflecting Lows around its Northern edge, around Ca & the Sierra. Click the stations below for their latest reports. Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and 24 hour high-low temps. A NEW WATER YEAR: LAST YEAR Total Precipitation 58 % of Average A NEW WATER YEAR: Reservoirs The Thaw: It's Coming 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 Southwest Tahoe Trail Map with Stations PCT-TYT-TRT Rubicon 95" -7 7618 feet Trail Map (45.20 H2O) +2.1 ?? 53 & 38 +/+ PCT-TYT-TRT Echo Peak 119" -10" 7652 feet Stations Map (62.50 H2O) +0.8 51 & 38 +/+ American-Yuba Watersheds PCT-TYT Carson Pass 102" -7 8388 feet Trail Map Stations Map (44.50" H2O) +0.7 52 & 31 +/- Carson-Walker Watersheds PCT-TYT Ebbetts Pass 117" -8 8660 feet Trail Map (59.40 H2O) +0.5 51 & 35 +/+ EAST FLANK Leavitt Lake 197" -6 9602 feet, East Flank Trail Map (62.90 H20) +0.7 49 & 35 +/+ EAST FLANK Marine Base Cold Weather Training 6748 feet East Flank Trail Map Above FULL REPORT VIS-CHIL-WEA-MB- WIND 81 & 24 +/- Mokelumne-Stanislaus Watersheds PCT-TYT Sonora Pass Kennedy Meadows RESUPPLY Deadman Creek 52.45" −2.5 9250 feet,West Flank, Trail Map (26.64" H20) +0.14" 47 & 28 +/- Tuolumne-Merced Watersheds Tenaya Lake 103.60 −7.2" 8163 feet, West Flank Trail Map (16.67") H20 +0.31" 55 & 24 +/- JMT-PCT-TYT Tuolumne Meadows 74.85" −6.95" 8600 feet, West Flank Trail Map (6.47") H20 =0.00" 52 & 21 +/- Tioga Pass/Dana 86.70" −5.2 9798 feet Trail Map 12.36 H20 (+0.54) 49 & 24 +/- Mammoth Mountain Mono Lake-Owens Basin East of PCT-JMT Above Gem Lake Gem Pass 156.50" =0.0 ?? ?? 10750 feet Trail Map (35.81 H2O) -0.88 temps bad JMT-PCT Junction Devils Postpile 81.01" −9.11 8004 feet Trail Map Above (0.0) = 51 & 26 -/- NE of JMT-PCT Mammoth Pass 151.22" Snow −5.96 9500 feet Trail Map 28.16" H2O =0.00 ?? 51 & 27 -/- JMT-PCT E of Bear Ridge Volcanic Knob 96.10" −4.6" 10100 feet Trail Map (0.00) 55 & 20 +/- East Flank South Lake Cabin (Snow removed ") 9580 feet, East Flank Trail Map (26.00 H2O) +0.10 57 & 28 -/+ East Flank Big Pine Sawmill 60.40" Snow −3.6 10200 feet, East Flank Trail Map Above 51 & 26 +/+ Kings River Just East JMT-PCT Bishop Pass --.-- 11972 feet Trail Map Above BAD- BAD Just West JMT-PCT Charlotte Lake 105.72" Snow −4.12 10398 feet, West Flank Trail Map 52.86 H2O +2.37 37 & 20 -/- (Typically the coldest station) Kern Watershed JMT-PCT Upr Tyndall Creek 99.60" −4.84" 11441 feet Trail Map (x.xx" H2O +x.xx") 46 & 24 +/= JMT Crabtree Meadow 48.29" Snow −3.34" 10,700 feet Trail Map (21.56 H2O) +0.42 47 & 23 +/- All High Sierra Reporting Stations	15 Broken Clouds Weak Low NE, & Front E of Offshore High Snow! Carson Pass Winter Weather Advisory 2019 Current Snowpack: Percent of Average for April 15. N Sierra: 167% +1% in 7 days Cen. Sierra: 162% -3% in 7 days S Sierra: 151% -1 % in 7 days Ca State: 161% -1% in 7 days Last Reading April 8 Next Reading April 22 Statewide Summary of Snow Water Content PDF Cal Coop Snow Survey 2017 Snow & Temps	16 Clearing High Moving Onshore A couple of inches of snow were added to the Sierra Crest last night Clear Nights Bring COLD Hazards TRENDS HAZARDS Review High Sierra Forecasts LAST WEEK NEXT WEEK TOP What Up? Informative "Normal" Vs. Now Forcasts & Reality vs. Averages 2018 Snow Depths & Temp 2018 Snowpack Percent of Average for April 16 +/- change since April 12 N Sierra: 37% (+2%) Cen. Sierra: 47% (=%) S Sierra: 35% (-1%) Ca State: 41% (=%) Last April 12 March 27 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	17 Sweet Day Warm High Moving Onshore Watch It! California Web Cams Modis Satellite Views (Compare 2017, 18, & 19) All High Sierra Weather Tracking the factors creating it Trail Guide *Trailhead* High Sierra *Backpacker's Magazine* SPRING THAW RIVER INFORMATION RESERVOIRS HAZARDS Tracking SPRING THAW 2019 2017 Snow & Temps 2016 Hot Day LAST WEEK NEXT WEEK TOP	18 Sweet Day Onshore High THE CURRENT SNOWPACK Current Conditions All Snow Information GRAPHICS Date-Adjustable Multi-Aspect High Sierra Snowpack Status THE 14th NOAA-NOHRSC SNOWPACK The High Sierra 4-14-19 OBSERVATIONS All High Sierra Reporting Stations Temp & Snow Tables by Watershed and Highway Corridor 2018 Snow Depths & Temp 2018 Snowpack Percent of Average for April 18 +/- change since April 16 N Sierra: 37% (-%) Cen. Sierra: 51% (+4%) S Sierra: 37% (-2%) Ca State: 44% (+3%) Last April 16 April 12 March 27 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	19 High Clouds Cooler, Breezy, still Warm Weak Front Resupply? (KM PACK STATION) BEST FORECASTS Precipitation General Quantitative Precipitation Forecasts: ALL RAIN FORECASTS & MODELS Seven Day Precip Animation Precipitation Geographic All High Sierra ZONE & POINT FORECASTS All High Sierra ZONE FORECASTS GRAPHICAL INTERFACE Forecast Winds? Weather? NorCal Graphics Region, SW US Forecast Temperatures Model Five Day Mean Low Temps Click Green "Latest" Model, observe using step button All Temps Let's look at the Big Picture Surface Map The Pacific Ocean US Weather Map All Maps 2017 Snow & Temps	20 Clear, Breezy Cool, Breezy, still Warm Weak Front Passed LAST WEEK NEXT WEEK TOP LAST WEEK NEXT WEEK TOP 2017 COLD WARNING Weak Front through last night, clear, High building. 2017 Current Snowpack VAST Percent of Average for April 1. N Sierra: 182% Cen. Sierra: 197% S Sierra: 182% Ca State: 189% Statewide Summary of Snow Water Content PDF Cal Coop Snow Survey Next Readings May 2 May 15 June 15 Mid-June HAZARDS Previous Readings April 1 March 27 March 1 2016: Hot THE BLOB RETURNS NW US LAST WEEK NEXT WEEK TOP
Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
21 Clear, Breezy Cool, Breezy, still Warm 2019 APRIL 21 *HIGH SIERRA* 9th --Spring-- Temp-Snow Check Last Report: April 14, 2019 Next Report: April 28, 2019 Let's check our reporting station snow & temp readings after the last 7 days of a persistent High building in, with a weak front crossing the High in between. Click the stations below for their latest reports. Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and 24 hour high-low temps. A NEW WATER YEAR: LAST YEAR Total Precipitation 58 % of Average A NEW WATER YEAR: Reservoirs The Thaw: It's Coming 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 Southwest Tahoe Trail Map with Stations PCT-TYT-TRT Rubicon 89" -6 7618 feet Trail Map (45.80 H2O) +0.6 45 & 31 -/- PCT-TYT-TRT Echo Peak 110" -9" 7652 feet Stations Map (63.10 H2O) +0.6 45 & 30 -/- American-Yuba Watersheds PCT-TYT Carson Pass 93" -9 8388 feet Trail Map Stations Map (44.90" H2O) +0.4 46 & 25 -/- Carson-Walker Watersheds PCT-TYT Ebbetts Pass 110" -7 8660 feet Trail Map (60.20 H2O) +0.8 44 & 26 -/- EAST FLANK Leavitt Lake 191" -6 9602 feet, East Flank Trail Map (63.60 H20) +0.7 42 & 25 -/- EAST FLANK Marine Base Cold Weather Training 6748 feet East Flank Trail Map Above FULL REPORT VIS-CHIL-WEA-MB- WIND 73 & 36 −/+ Mokelumne-Stanislaus Watersheds PCT-TYT Sonora Pass Kennedy Meadows RESUPPLY Deadman Creek 43.92" −8.53 9250 feet,West Flank, Trail Map (27.08" H20) +0.44" 38 & 15 −/− Tuolumne-Merced Watersheds Tenaya Lake 93.10 −10.5" 8163 feet, West Flank Trail Map (18.26") H20 +1.59" ?? 49 & 23 −/− JMT-PCT-TYT Tuolumne Meadows 64.89" −9.96" 8600 feet, West Flank Trail Map (6.47") H20 =0.00" 45 & 16 −/− Tioga Pass/Dana 79.80" −6.9 9798 feet Trail Map 13.53 H20 +1.17 ?? 39 & 13 −/− Mammoth Mountain Mono Lake-Owens Basin East of PCT-JMT Above Gem Lake Gem Pass 156.50" =0.0 ERROR 10750 feet Trail Map (36.07 H2O) +0.26 temps bad JMT-PCT Junction Devils Postpile 69.66" −11.35 8004 feet Trail Map Above (0.0) = 51 & 28 =/+ NE of JMT-PCT Mammoth Pass 144.41" Snow −6.81 9500 feet Trail Map 28.64" H2O +0.48 45 & 25 −/− JMT-PCT E of Bear Ridge Volcanic Knob 92.20" −3.9" 10100 feet Trail Map (0.00) 43 & 14 −/− East Flank South Lake Cabin (Snow removed ") 9580 feet, East Flank Trail Map (26.00 H2O) =0.00 51 & 24 −/− East Flank Big Pine Sawmill 53.50" Snow −6.9 10200 feet, East Flank Trail Map Above 39 & 19 −/− Kings River Just East JMT-PCT Bishop Pass --.-- 11972 feet Trail Map Above BAD- BAD Just West JMT-PCT Charlotte Lake 96.99" Snow −8.73 10398 feet, West Flank Trail Map 53.51 H2O +0.65 38 & 13 +/− (Typically the coldest station) Kern Watershed JMT-PCT Upr Tyndall Creek 92.30" −7.3" 11441 feet Trail Map (x.xx" H2O +x.xx") 33 & 13 −/− JMT Crabtree Meadow 42.04" Snow −6.25" 10,700 feet Trail Map (22.18 H2O) +0.62 42 & 16 −/− All High Sierra Reporting Stations	22 Clear, Warm Big High, Hot 2019 Current Snowpack: Percent of Average for April 22. N Sierra: 162% -5% in 7 days Cen. Sierra: 162% =% in 7 days S Sierra: 152% +1 % in 7 days Ca State: 159% -2% in 7 days Last Reading April 15 Next Reading April 26 Statewide Summary of Snow Water Content PDF Cal Coop Snow Survey 2017 Readings April 1 April 20 May 2 LAST WEEK NEXT WEEK TOP THE CURRENT SNOWPACK Current Conditions All Snow Information GRAPHICS Date-Adjustable Multi-Aspect High Sierra Snowpack Status THE 21ST NOAA-NOHRSC SNOWPACK The High Sierra 4-21-19 OBSERVATIONS All High Sierra Reporting Stations Temp & Snow Tables by Watershed and Highway Corridor 2018 Review Fourth Week of April 2018 Snow Depths & Temp 2017	23 Clear, Hot Big High, Hot for Summer BEST FORECASTS Precipitation General Quantitative Precipitation Forecasts: ALL RAIN FORECASTS & MODELS Seven Day Precip Animation Precipitation Geographic All High Sierra ZONE & POINT FORECASTS All High Sierra ZONE FORECASTS GRAPHICAL INTERFACE Forecast Winds? Weather? NorCal Graphics Region, SW US Forecast Temperatures Model Five Day Mean Low Temps Click Green "Latest" Model, observe using step button All Temps Let's look at the Big Picture Surface Map The Pacific Ocean US Weather Map All Maps	24 Clear, Hot Big High, Hot for Summer 2019 See Current High Sierra Trail and Terrain News 2018 See Current High Sierra Trail and Terrain News 2017 See Hazard Alert from April 1 through August! LAST WEEK NEXT WEEK TOP 2017 Snow & Temps	25 Clear, Hot Big High, Cooler SPRING THAW RIVER INFORMATION RESERVOIRS HAZARDS Tracking SPRING THAW 2019 2018 Snow Depths & Temp 2018 Snowpack Percent of Average for April 25 +/- change since April 18 N Sierra: 22% (-15%) Cen. Sierra: 46% (-5%) S Sierra: 28% (-9%) Ca State: 37% (+7%) Last April 18 April 16 April 12 March 27 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 LAST WEEK NEXT WEEK TOP	26 Clear, Warm Big High, Cooler 2019 Current Snowpack: Percent of Average for April 26. N Sierra: 151% -11% in 4 days Cen. Sierra: 155% -7% in 4 days S Sierra: 149% -3 % in 4 days Ca State: 152% -7% in 4 days Last Reading April 22 Next Reading April 29 Statewide Summary of Snow Water Content PDF Cal Coop Snow Survey 2017 Readings April 1 April 20 May 2 Seven Day Freezing Temperature Probability Informative "Normal" Vs. Now Forcasts & Reality vs. Averages 2017 Snow & Temps	27 Clear, Warm Bit Breezy, Nice LAST WEEK NEXT WEEK TOP LAST WEEK NEXT WEEK TOP LAST WEEK NEXT WEEK TOP
Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
28 Clear, Warm Bit Breezy, Cooler, Nice CalTrans Trans-Sierra Highways Road Openings History 2017 Sonora Pass: 6-12 Tioga Pass: 6-29 Ebbetts Pass: 6-30 HIGH SIERRA Backpacker NEWS LATEST HIGH SIERRA TRAIL NEWS 2019 APRIL 28 *HIGH SIERRA* 10th --Spring-- Temp-Snow Check Last Report: April 14, 2019 Next Report: May 1, 2019 Let's check our reporting station snow & temp readings after the last 7 days of a persistent High building in, with a couple of Record-near record temp days. Click the stations below for their latest reports. Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and 24 hour high-low temps. A NEW WATER YEAR: LAST YEAR Total Precipitation 58 % of Average A NEW WATER YEAR: Reservoirs The Thaw: It's Coming 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 Southwest Tahoe Trail Map with Stations PCT-TYT-TRT Rubicon 77" -12 7618 feet Trail Map (45.80 H2O) =0.0 58 & 43 +/+ PCT-TYT-TRT Echo Peak 91" -19" 7652 feet Stations Map (63.10 H2O) =0.0 56 & 45 +/+ American-Yuba Watersheds PCT-TYT Carson Pass 79" -14 8388 feet Trail Map Stations Map (44.90" H2O) =0.0 56 & 36 +/+ Carson-Walker Watersheds PCT-TYT Ebbetts Pass 94" -16 8660 feet Trail Map (60.30 H2O) +0.1 56 & 41 +/+ EAST FLANK Leavitt Lake 175" -16 9602 feet, East Flank Trail Map (63.60 H20) =0.0 48 & 40 +/+ EAST FLANK Marine Base Cold Weather Training 6748 feet East Flank Trail Map Above FULL REPORT VIS-CHIL-WEA-MB- WIND 83 & 34 +/− Mokelumne-Stanislaus Watersheds PCT-TYT Sonora Pass Kennedy Meadows RESUPPLY Deadman Creek 33.56" −10.36 9250 feet,West Flank, Trail Map (27.25" H20) +0.17" 49 & 30 +/+ Tuolumne-Merced Watersheds Tenaya Lake 74.64 −18.46" 8163 feet, West Flank Trail Map (18.26") H20 =0.0" 57 & 24 +/+ JMT-PCT-TYT Tuolumne Meadows 47.67" −17.22" 8600 feet, West Flank Trail Map (6.47") H20 =0.00" 54 & 23 +/+ Tioga Pass/Dana 64.75" −15.05 9798 feet Trail Map 13.53 H20 =0.00 51 & 28 +/+ Mammoth Mountain Mono Lake-Owens Basin East of PCT-JMT Above Gem Lake Gem Pass 151.00" −5.5 ERROR? 10750 feet Trail Map (32.52 H2O) −3.55 ?? temps bad JMT-PCT Junction Devils Postpile 55.30" −14.36 8004 feet Trail Map Above (0.0) = 58 & 28 +/= NE of JMT-PCT Mammoth Pass 126.65" Sno −17.76 9500 feet Trail Map 36.00" H2O +7.36 ?? 54 & 34 +/+ JMT-PCT E of Bear Ridge Volcanic Knob 78.00" −14.2" 10100 feet Trail Map (0.00) 55 & 26 +/+ East Flank South Lake Cabin (Snow removed ") 9580 feet, East Flank Trail Map (26.00 H2O) =0.00 56 & 36 +/+ East Flank Big Pine Sawmill 45.40" Snow −8.1 10200 feet, East Flank Trail Map Above 49 & 35 +/+ Kings River Just East JMT-PCT Bishop Pass --.-- 11972 feet Trail Map Above BAD- BAD Just West JMT-PCT Charlotte Lake 81.05" Snow −15.94 10398 feet, West Flank Trail Map 53.53 H2O +0.02 47 & 24 +/+ (Typically the coldest station) Kern Watershed JMT-PCT Upr Tyndall Creek 82.17" −10.13" 11441 feet Trail Map (x.xx" H2O +x.xx") 48 & 28 +/+ JMT Crabtree Meadow 34.62" Snow −7.42" 10,700 feet Trail Map (22.29 H2O) +0.11 46 & 27 +/+ All High Sierra Reporting Stations	29 Clear, Warm Bit Breezy, Nice 2019 Current Snowpack: Percent of Average for April 29. N Sierra: 144% -18% in 7 days -7% in 3 days Cen. Sierra: 145% -17% in 7 days -10% in 3 days S Sierra: 140% -12% in 7 days -9% in 3 days Ca State: 143% -16% in 7 days -9% in 3 days Last Reading April 26 Statewide Summary of Snow Water Content PDF Cal Coop Snow Survey 2017 Readings April 1 April 20 May 2 Current HIGH SIERRA Mountain Safety Incidents 2018 Review Last Week of April 2018 Snow Depths & Temp 2018 Snowpack Percent of Average for April 29 +/- change since April 25 N Sierra: 30% (+8%) Cen. Sierra: 44% (-2%) S Sierra: 31% (+3%) Ca State: 37% (=%) Last April 25 April 18 April 16 April 12 March 27 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 Top of Calendar	30 Clear, Warm Bit Breezy, Nice Transition Spring Gear Kit LAST WEEK NEXT MONTH TOP 2017 2017 Snow & Temps	1 MAY Clear, Warm Bit Breezy, Nice May Day May Day Note 2019 Current Snowpack: Percent of Average for May 1. N Sierra: 144% =0% in 2 days Cen. Sierra: 147% +2% in 2 days S Sierra: 139% -1% in 2 days Ca State: 143% =0% in 2 days Last Reading April 29 Statewide Summary of Snow Water Content PDF Cal Coop Snow Survey 2017 Readings April 1 April 20 May 2 2018 Snowpack Percent of Average for May 1 +/- change since April 29 Ca State: 27% (-10%) 2019 MAY 1 *HIGH SIERRA* 11th --Spring-- Temp-Snow Check Last Report: April 28, 2019 Next Report: May 7, 2019 Let's check our reporting station snow & temp readings after the last 2 nice, warm, & breezy days but still cooler days. under the persistent High that's built in. Click the stations below for their latest reports. Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and 24 hour high-low temps. A NEW WATER YEAR: LAST YEAR Total Precipitation 58 % of Average A NEW WATER YEAR: Reservoirs The Thaw: It's Coming 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 Southwest Tahoe Trail Map with Stations PCT-TYT-TRT Rubicon 73" -4 7618 feet Trail Map (45.80 H2O) =0.0 45 & 29 −/− PCT-TYT-TRT Echo Peak 85" -6" 7652 feet Stations Map (63.30 H2O) +0.2 45 & 28 −/− American-Yuba Watersheds PCT-TYT Carson Pass 74" -5 8388 feet Trail Map Stations Map (44.90" H2O) =0.0 47 & 25 −/− Carson-Walker Watersheds PCT-TYT Ebbetts Pass 88" -6 8660 feet Trail Map (60.30 H2O) =0.0 46 & 21 −/− EAST FLANK Leavitt Lake 171" -4 9602 feet, East Flank Trail Map (63.60 H20) =0.0 41 & 20 −/− EAST FLANK Marine Base Cold Weather Training 6748 feet East Flank Trail Map Above FULL REPORT VIS-CHIL-WEA-MB- WIND 68 & 38 −/+ Mokelumne-Stanislaus Watersheds PCT-TYT Sonora Pass Kennedy Meadows RESUPPLY Deadman Creek 31.76" −1.8 9250 feet,West Flank, Trail Map (27.19" H20) -0.06" 43 & 19 −/− Tuolumne-Merced Watersheds Tenaya Lake 68.60 −6.04" 8163 feet, West Flank Trail Map (18.26") H20 =0.0" 48 & 20 −/− JMT-PCT-TYT Tuolumne Meadows 42.28" −5.39" 8600 feet, West Flank Trail Map (6.47") H20 =0.00" 47 & 17 −/− Tioga Pass/Dana 61.07" −3.68 9798 feet Trail Map 13.53 H20 =0.00 43 & 15 −/− Mammoth Mountain Mono Lake-Owens Basin East of PCT-JMT Above Gem Lake Gem Pass 151.00" −0.0 ERROR? 10750 feet Trail Map (00.00 H2O) −32.52 ?? temps bad JMT-PCT Junction Devils Postpile 47.80" −7.5 8004 feet Trail Map Above (0.0) = 48 & 27 −/− NE of JMT-PCT Mammoth Pass 121.15" Sno −5.5 9500 feet Trail Map 38.72" H2O +2.72 ?? 46 & 23 −/− JMT-PCT E of Bear Ridge Volcanic Knob 75.20" −2.8" 10100 feet Trail Map (0.00) 47 & 12 −/− East Flank South Lake Cabin (Snow removed ") 9580 feet, East Flank Trail Map (26.00 H2O) =0.00 50 & 18 −/− East Flank Big Pine Sawmill 41.80" Snow −3.6 10200 feet, East Flank Trail Map Above 42 & 14 −/− Kings River Just East JMT-PCT Bishop Pass --.-- 11972 feet Trail Map Above BAD- BAD Just West JMT-PCT Charlotte Lake 78.13" Snow −2.92 10398 feet, West Flank Trail Map 54.10 H2O +0.57 39 & 14 −/− (Typically the coldest station) Kern Watershed JMT-PCT Upr Tyndall Creek 81.28" −0.89" 11441 feet Trail Map (x.xx" H2O +x.xx") 41 & 24 −/− JMT Crabtree Meadow 33.62" Snow −1" 10,700 feet Trail Map (22.43 H2O) +0.14 42 & 17 −/− All High Sierra Reporting Stations May 7 Snow Report 2017 Snow & Temps	2 MAY NEXT MONTH TOP TWISTED SEASONS Hottest & Driest Year, then the Wettest Ever, over Three Years Seven Day Freezing Temperature Probability Review April of 2017 against April of 2016 2017 Heat Wave 2017 Current Snowpack VAST Percent of Average for May 2. N Sierra: 198% Cen. Sierra: 201% S Sierra: 178% Ca State: 194% Cal Coop Snow Survey	3 MAY NEW Temp & Snow Tables by Watershed and Highway Corridor Also See All High Sierra Snowpack Data. Date-Adjustable High Sierra Snowpack Status LAST WEEK NEXT MONTH TOP 2018 Highway 108 Open, May 3, 12:00 Noon 2017 Sonora Pass: 6-12 Tioga Pass: 6-29 Ebbetts Pass: 6-30	4 MAY MORE HIGH SIERRA Backpacker RESOURCES The High Sierra Weather Page HAZARDS All High Sierra Satellite Views All High Sierra Radar Views All Snow-Precip High Sierra Forecasts All High Sierra ZONE FORECASTS All High Sierra POINT FORECASTS SEE THE LATEST HIGH SIERRA NEWS 2018 Highway 4 Open, May 4, 12:00 Noon 2017 Snow & Temps LAST WEEK NEXT MONTH TOP LAST WEEK NEXT MONTH TOP

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End of March

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2019

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2014 Calendar 2015 Calendar

2016 Calendar 2017 Calendar

2018 Calendar

Conditions Vs. Plans
Is there a huge snowpack?
None?

Have you Late Spring or Early Summer Hiking Plans?
Current conditions will tell you if your early season hiking plans are possible.

Let's compare:

APRIL 8 STATUS 2015
8% of Average Snowpack

APRIL 8 STATUS 2016
73% of Average Snowpack

APRIL 7 STATUS 2017
161% of Average Snowpack

APRIL 10 STATUS 2018
43% of Average Snowpack

APRIL 8 STATUS 2019
162% of Average Snowpack

APRIL 19 STATUS 2016
85% of Average Snowpack

APRIL 20 STATUS 2017
189% of Average Snowpack

2016
Things are very different this year than the past 5 years. Early heat this year may do more to close the trail than open it.
Rather than early dry conditions we may well face early and enduring early-season soggy conditions.

2017

IT'S ON

Ca Dept of Water Resources

High Sierra Backpacker Weather

SPRING THREATS ON FULL DISPLAY
BACKPACKER ALERT
April 1, 2017
The most important topic of this date is the massive snowpack on the Sierra Crest and the extreme danger it poses to PCT hikers. The dangers of High Altitude Snow Travel will soon be supplemented by very dangerous fording conditions when this snowpack begins to thaw.

These conditions require skills, gear, and fitness to assure any level of safe travel as of this date. Undercutting and safety along the banks of creeks emerging from snow cover is currently increasing, as will the difficulty of travel conditions increase as the pack softens under the increasing heat of Spring.

Extremely difficult travel conditions will soon shift from hard snow that defies traction to wet snow offering no foundation. We will shortly transition from barely clinging to the mountain-side to sinking up to our waists with each step. As Spring progresses cold mornings will bring the former condition, warm afternoons the latter.

The same temp shift driving the changing character of the snow pack will soon drive even the highest river fords to levels unsafe for fording, and make the major rivers raging torrents of destruction. These temp shifts change the character of the Sierra.

The snowpack itself will become sopping wet, saturating anything and anyone in contact with it. These are the times that hikers without sufficient insulation can find cold combining with exhaustion to degrade decision making as well as technical execution & style to create very dangerous situations. I see Wet, cold, and tired PCT hikers surrounded by a sea of deep, wet, energy-sucking snow divided by an endless series of raging torrents of typically tiny High Sierra creeks surging like rivers, each supercharged by Spring's mighty flows.

The trails will be flowing like creeks, when we get down to them. And they will lead to the mighty rivers, which will be downright scary, once this massive snow pack begins to melt in earnest.

STATUS NOTES

2017 OBSERVATIONS AND TRACKING

2017
WEATHER NOTE
of
April 19th

Note the pattern of a series of Highs & Lows I mentioned on the 15th has sustained itself through the 19th, & looks likely to contain one more wet pulse.
The pattern has seen Wet, Warm frontal/Lows followed by brief clear, cold Highs. Rapidly. This current cool High is giving way to another frontal Low, & it will warm into the 20th with that moisture as this pattern then breaks, followed by cooling with the clearing/High building from 21th to 24th.

Then some heat will build in from the 22nd, unless this series of Highs-Lows come back...

FULL NOTE-COMMENTS

APRIL 9 ANALYSIS
As of April 9 extreme Spring Snow travel conditions are reasonably predictable through July, barring any extreme heating or tropical rain activity. Both extreme heating and tropical rains are very possible, if not likely.

We will have some warm ups, we will have some downpours.

As of this day the pack has not softened appreciably, nor has the Spring Thaw begun to gut the pack. We are still facing classic cold Spring conditions, which are the easiest phase of Spring Snow Travel.

This will change rapidly.

A soft snowpack is very difficult to travel across, though a soft snowpack is a lot harder to fall off of. The danger of falling off the mountain will shortly be replaced by grasping, sucking snow that draws you down into it, and refuses to let go. It tries to work you to death, rather than toss you off the mountain... Very difficult...

When the snow gets soft the trails will be flowing like creeks, the creeks like rivers, and the rivers unpassable, once this snowpack gets to that level of saturation. Everything will get saturated, wet, and cold. Eveything.

Your gear better keep you warm when wet.

Thus this current "cold" part of the Spring Thaw is actually the best and easiest terrain for rapid movement, if the Spring Traveler is properly and throughly equipped, in fine physical condition, and capable of snow navigation without trail, sign, or ranger to guide.
We can still stay dry and on top of the snow.

These deep cold Spring conditions are not ideal conditions for lightly geared hikers, nor will they be for quite some time. Deep Cold and hard snow will first turn soft, and the transition from Dry to Wet cold is very dangerous.

Warm wet snow is much more dangerous than cold dry snow.

The key PCT questions will come in a series,
"When will the Thaw begin to soften and the snow become wet enough to make soft-snow passage very difficult and fording very dangerous?"

That time is approaching right now, as I write this on the 9th.

Then the next question will be, "when will enough of the Thaw pass to allow safe passage of key fords?"

We are Watching.

2016 OBSERVATIONS AND TRACKING

Snowpack Tracker

WHEN WILL THE SIERRA OPEN in 2016?

TRACKING 2016 CONDITIONS

It is TIME
Consult with Resupply Location Information to assure resupply buckets are mailed in a timely fashion.
Some will go early, some will be mailed later...

High Sierra Backpacker Resupply

2017

Epic.

NEWS
Let's Ski through July

2016
The potential for warm rains scouring the crest of snow long before the traditional date of the end of freezing temps, which was on May 26 2015.

The end of Freezing Temps may arrive in April or early May this Year, as indicated by trends.

The tropical storm of April 7 to 10 has brought above-freezing overnight temps to the North Sierra on April 9, which is just plumb crazy.

FREEZER FORECAST

The Past Prologues the Future

2014 Calendar 2015 Calendar

2016 Calendar 2017 Calendar

2018 Calendar

2015 REPORT
APRIL 2015 ASSESMENT
Earliest Trans-Sierra Highway Openings on Record?

YUP.

RESUPPLY TIPS
Always use plastic buckets to ship your resupply:
Any container a mouse can chew through or water can penetrate is at risk.

Think about what you'd like, as well as what you need in your resupply bucket.
A bottle of fine wine or quality whiskey is a nice thing on a cold Sierra night at the resupply with the bros...

BACKGROUND
The trajectory of the cold, rain, and snows of January provide both excellent backpacking experiences and establish the terms, a baseline for this year’s transition into Spring Conditions.

Regular storm activity laid atop a deep pack of Winter snows wrapped in cold temps indicate a long Winter into Spring transition.

Light snows and irregular storm activity sprinkled on a thin snow pack under high temperatures indicates an early and rapid transitions into Spring and Summer conditions.

Tahoe to Whitney

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