March 2020Tahoe to Whitney High Sierra Backpacking Calendar

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Gateway to Summit City Creek & the first unmaintained segment of the Tahoe to Yosemite Trail

March 2020

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Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
MARCH LAST MONTH NEXT WEEK TOP Backpackers Shift to Fall Gear well under way. Be ready for last bursts of Cold Winter Weather. Ignore the Calendar. Gear up for the Conditions on the Ground, not a Date on the Calendar. High Sierra Backpacker Weather ON THE TRAIL 2015 REPORTS July 2015 Current chances of experiencing SEVERE WEATHER are INCREASED. Hiking the PCT in 2020? *From the Trail Guide* The Earliest, Latest, and Average Start Dates How Will This Year Stack-Up? ON THE CALENDAR Earliest Start Date Winter of 2015 Driest in History Average Start Date Winter of 2016 An Average Year Latest Start Date Winter of 2017 Wettest in History When are the trails along the Sierra Crest going to be passable this year? These three years highlighted above offer the potential range of Weather Conditions within which this year's PCTer, "Start Date," the date you can reasonably expect to encounter fairly snow-free trails with post-deadly fording conditions, will be determined within. These are the historic limits of wet and dry, with a perfectly average year thrown in-between. This date, of course, depends upon your ability to navigate snow at high altitude, along with your ability to cross the various stages of the dangerous thaw waters draining off it. You can get through before and after the period of high-flow runoff, but not during this phase. How the conditions of the Winter to Spring Transition we track this year measures-up to the classic trajectories of these three years cited above will inform potential PCT hikers about the snow/trail conditions along the High Sierra Crest they may reasonably expect to encounter during May, June, and July of this year measure-up against those of the Driest year in history against an Average Year, against the wettest Year in History... This year of 2020 will fit somewhere between these historic parameters of the record Wettest and record Driest years that happened between 2015 and 2017. As our seasonal start date for open access to trails along the High Sierra Crest will be adjusted according to the character and trajectory of this year's Winter to Spring Transition, we will watch it carefully. Advice for Rookie Hikers wishing to hike the TYT-JMT-PCT		25 FEBRUARY 2020 Clear & Warm Early Summer-Like HEAT Record-Level Temps note Cold Nights at High Elevations, despite warmth at lower elevations, have been preserving this thin snowpack. Now it is warming at High Elevations. LAST MONTH NEXT WEEK TOP Hiking the PCT in 2020? *From the Trail Guide* The Earliest, Latest, and Average Start Dates How Will This Year Stack-Up? ON THE CALENDAR Earliest Start Date Winter of 2015 Driest in History Average Start Date Winter of 2016 An Average-Dry Year Latest Start Date Winter of 2017 Wettest in History When are the trails along the Sierra Crest going to be passable this year? Upcoming Weather Probabilities These three years highlighted above offer the potential range of Weather Conditions within which this year's PCTer, "Start Date," the date you can reasonably expect to encounter fairly snow-free trails with post-deadly fording conditions, will be determined within. These are the historic limits of wet and dry, with a perfectly average year thrown in-between, for good measure. This date, of course, depends upon your ability to navigate snow at high altitude, along with your ability to cross the various stages of the dangerous thaw waters draining off it. And your fitness, of course. You are training, are you not? You can get through before and after the period of high-flow runoff, but not during this phase. How the conditions of the Winter to Spring Transition we track this year measures-up to the classic trajectories of these three years cited above will inform potential PCT hikers about the snow/trail conditions along the High Sierra Crest they may reasonably expect to encounter during May, June, and July of this year measure-up against those of the Driest year in history against an Average Year, against the wettest Year in History... This year of 2020 will fit somewhere between these historic parameters of the record Wettest and record Driest years that happened between 2015 and 2017. As our seasonal start date for open access to trails along the High Sierra Crest will be adjusted according to the character and trajectory of this year's Winter to Spring Transition, we will watch it carefully. Advice for Rookie Hikers wishing to hike the TYT-JMT-PCT 2018 Weather Notes TWISTED SEASONS Hottest & Driest, then Wettest Year Ever, over Three Years Compare Years	26 FEBRUARY 2020 Clear & Warm Early Summer-Like HEAT Big Blocking Ridge Big Blocking Ridge Patterns Note Big Blocking Ridge TRENDS MAPS 2020 Snowpack: Percent of Average for February 26. N Sierra: 51% -6% in 6 days Cen. Sierra: 46% -5% in 6 days S Sierra: 43% -3% in 6 days Ca State: 47% -5% in 6 days Last Reading Feb 20 Next Reading March 2 Statewide Summary of Snow Water Content PDF	27 FEBRUARY 2020 Clear & Hot Summer-Like HEAT 2019 Current Snowpack: Percent of Average for February 27. N Sierra: 147% +20% in 2 days Cen. Sierra:154% +0% in 2 days S Sierra: 146% +2% in 2 days Ca State: 151% +5% in 2 days Last Reading Feb 25 2019	28 FEBRUARY 2020 Cooler & Cloudy Low(s) Passing to our North Informative "Normal" Vs. Now Forcasts & Reality vs. Averages This Week TOP This Week TOP	29 FEBRUARY 2020 Cooler & Cloudy Weak Low Off North Ca Coast Drawing Tropical Moisture North LAST MONTH NEXT WEEK TOP LAST MONTH NEXT WEEK TOP
Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
1 Cooler & Cloudy Weak Low Passing across North Sierra Cool Day light SNOW! See the Snow COLD Night Summer Hiking Plans Permits In agreement with the progress of Spring? March 2015 Driest Year in History March 2016 An Average-Dry Year March 2017 Wettest Year in History March 2018 Dry Year March 2019 Wet Year 2019 Current Snowpack: Percent of Average for March 1. N Sierra: 152% +5% in 2 days Cen. Sierra:156% +2% in 2 days S Sierra: 147% +1% in 2 days Ca State: 153% +2% in 2 days 2019 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 March 2018 Statewide Summary of Snow Water Content PDF 2018, End of Feb Snow Depths & Temps 2017 March Snow Depths & Temps 2017 Current Snowpack: Percent of Average for March 1. N Sierra: 159% Cen. Sierra: 191% S Sierra: 201% Ca State: 185% 2017 2016 Snotel Station Reports Current Snow Depth Carson Pass 47 & 26 degrees, 64" Ebbetts Pass 49 & 30 degrees, 58" Sonora Pass 48 & 30 degrees, 50'' Tuolumne Meadows 23 & 53 degrees, 43" March of 2016 March of 2015	2 Clearing Weak Low Passing across North Sierra Warm Day WIND ADVISORIES 2020 Snowpack: Percent of Average for March 2. N Sierra: 47% -4% in 5 days Cen. Sierra: 44% −2% in 5 days S Sierra: 39% −4% in 5 days Ca State: 44% −3% in 5 days Last Reading Feb 26 Last Reading March 9 Statewide Summary of Snow Water Content PDF Station Reports The THIRTEENTH --WINTER-- Temp-Snow Check March 2 2020 11 AM - 11 AM Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and 24 hour high-low temps. Last Report: Feb 27 Next Report: March 8 Tahoe Basin Watershed Southwest Tahoe Trail Map with Stations PCT-TYT-TRT Rubicon 38.0 +8.00 (13.80) + 0.40 7618 feet Trail Map 29 & 19 −/− PCT-TYT-TRT Echo Peak 45.0 +6 (22.00) + 0.40 7652 feet Stations Map 28 & 19 −/− American-Yuba Watersheds PCT-TYT Carson Pass 44.0 +4 (15.80) +0.20 8388 feet Trail Map Stations Map 34 & 14 −/− Carson-Walker Watersheds PCT-TYT Ebbetts Pass 47.0 +8 (21.6) +0.50 8660 feet Trail Map 24 & 13 −/− West of PCT Highlands Meadow 5.86 −0.7 (19.76) −0.71 8360 feet Trail Map 21 & 12 −/− Top of List EAST FLANK Leavitt Lake 70.0 +13.0 (17.30) +0.70 9602 feet, East Flank Trail Map 19 & 8 −/− EAST FLANK Marine Base Cold Weather Training 6748 feet East Flank Trail Map Above FULL REPORT VIS-CHIL-WEA-MB- WIND 31 & 22 −/+ Mokelumne-Stanislaus Watersheds PCT-TYT Sonora Pass Kennedy Meadows RESUPPLY Deadman Creek 27.23 +4.35 (--.--) 9250 feet,West Flank, Trail Map 19 & 7 −/− Tuolumne-Merced Watersheds SW of TYT Horse Meadow Error =0.4 ??? 8602 feet Trail Map 26 & 13 −/− Top of List Tenaya Lake 35.47 +4.33 (4.61) + 0.01 8163 feet, West Flank Trail Map 34 & 16 −/− JMT-PCT-TYT Tuolumne Meadows 20.04 +2.39 (4.06) +0.01 8600 feet, West Flank Trail Map 31 & 13 −/− Tioga Pass/Dana ERROR +ERROR (1.71) =0.00 ?? 9798 feet Trail Map 22 & 4 −/− Mammoth Mountain Mono Lake-Owens Basin East of PCT-JMT Above Gem Lake Gem Pass (error) 10750 feet Trail Map temps bad JMT-PCT Junction Devils Postpile 8.37 +8.37 (8.95) +0.30 8004 feet Trail Map Above 30 & 16 −/− NE of JMT-PCT Mammoth Pass 52.02 +12.95 (0.64) = +.64 9500 feet Trail Map 22 & 7 −/− Top of List JMT-PCT E of Bear Ridge Volcanic Knob 33.80 +1.1 (0.00) = ?? 10100 feet Trail Map 28 & 11 −/− East Flank South Lake Cabin no snow sensor (29.20) +0.1 9580 feet, East Flank Trail Map 39 & 3 −/− East Flank Big Pine Sawmill 17.60 +1.6 10200 feet, East Flank Trail Map Above 25 & 0 −/− Kings River Just East JMT-PCT Bishop Pass (bad) (0.0) = 11972 feet Trail Map Above -- & -- −/− (earlier) Just West JMT-PCT Charlotte Lake xx.xx −ERROR?- (73.03) +0.31 10398 feet, West Flank Trail Map 23 & 9 −/− (Typically the coldest station) Kern Watershed JMT-PCT Upr Tyndall Creek 36.15 +2.46 11441 feet Trail Map 20 & 3 −/− JMT Crabtree Meadow xx.xx ERROR −X.XX (34.03) −0.04 10,700 feet Trail Map 26 & 11 −/− ? = questionable data All High Sierra Reporting Stations More Stations, by Watersheds Top of List 2018, Start o March Snow Depths & Temps	3 Clear & Warm Summer-Like WARMTH HIGH SIERRA SNOW INFO All Snow Info SNOW STATUS & FORECASTS THE SNOWPACK *GRAPHICS* Date-Adjustable High Sierra Snowpack Status NOAA-NOHRSC The High Sierra 3-2-20 REALTIME High Sierra Crestline Reporting Stations WINTER 2020 Fall to Winter Compare Today with Snow & Temperatures on March 8 March 2 Feb 27 Feb 20 Feb 10 Feb 3 Jan 28 Jan 23 Jan 13 & 17 Jan 8 Jan 2 Dec 30 Dec 24	4 Clear & Warm Summer-Like WARMTH LAST WEEK NEXT WEEK TOP BEST FORECASTS HAZARDS Precipitation General Quantitative Precipitation Forecasts: ALL RAIN FORECASTS & MODELS Direct to Seven Day Precip Animation Precipitation Geographic All High Sierra ZONE & POINT FORECASTS All High Sierra ZONE FORECASTS Now RADAR SATELLITES Direct to 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 This Week TOP This Week TOP This Week TOP	5 Cooler & Cloudy Weak Lows Approach Seven Day Freezing Temperatures Probability Model Point Forecasts Lake Tahoe Forecast Walker Forecast Sonora Pass Forecast Cherry Lake Forecast Lee Vining Forecast Tuolumne Meadows Mammoth Pass Lake Thomas Edison Mount Whitney-Lone Pine Lake Isabella Forecast Move the Map Dot to Customize Forecast Point Trail Maps 2018 Snowpack: Percent of Average for March 5. (Change since Mar 1.) N Sierra: 30% (+10%) Cen. Sierra: 43% (+16%) S Sierra: 37% (+15%) Ca State: 37% (+13%) 2018	6 Light Precip Late Weak Low DROUGHT CONSIDERATIONS Mountain Safety AVALANCHE DANGERS Winter Backpacking Considerations Deep Snow in the Mountains (?), Spring on the Horizon (?)... I'm Pumped. Am I ready? I Want Skittles! Navigation & Snow Informative "Normal" Vs. Now Forcasts & Reality vs. Averages LAST WEEK NEXT WEEK TOP	7 Light Precip Early Weak Low LAST WEEK NEXT WEEK TOP 2019 Current Snowpack: Percent of Average for March 7. N Sierra: 158% +5% in 3 days Cen. Sierra:164% +5% in 3 days S Sierra: 161% +12% in 3 days Ca State: 161% +6% in 3 days 2019 2017 Cold, Cloudy, but Warming High Building off Ca Coast Snow Depth, 24 hour high & low temps. Carson Pass 138" (44.90" H2O) 25 & 12 Ebbetts Pass 163" 23 & 10 Deadman Creek (42.48" H20) 39 & 11 Leavitt Lake SNO " BAD (57.1" H20) 29 & 6 2017 LAST WEEK NEXT WEEK TOP LAST WEEK NEXT WEEK TOP LAST WEEK NEXT WEEK TOP
Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
8 Cloudy Weak Lows Approach 2 AM Start of Daylight Savings Spring Forward, Fall Back... DAYLIGHT SAVINGS TIME THE DST RULES NIST PDT Information Move clocks one hour Forward in time. "Spring Forward, Fall Back." Why do we think we can manipulate Time & Nature, when the main thing we are changing, screwing-up, is ourselves? Well, Nature too... CRITICAL Our LOCAL Measurement of Time from Greenwich Time, at. "Longitute O," AKA, "Zulu Time," or "UTC," to the West Coast & High Sierra Shifts from Z-8=PST to Z-7=PDT PDT Ends November 8 Station Reports The FOURTEENTH --WINTER-- Temp-Snow Check March 8 2020 3 PM - 3 PM Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and 24 hour high-low temps. Last Report: March 2 Next Report: March 13 Tahoe Basin Watershed Southwest Tahoe Trail Map with Stations PCT-TYT-TRT (3 PM) Rubicon 26.0 −12.00 (14.20) + 0.40 7618 feet Trail Map 37 & 26 +/+ PCT-TYT-TRT (3 PM) Echo Peak 38.0 −7 (22.30) + 0.30 7652 feet Stations Map 37 & 25 +/+ American-Yuba Watersheds PCT-TYT Carson Pass (3 PM) 36.0 −8 (16.20) +0.40 8388 feet Trail Map Stations Map 36 & 19 +/+ Carson-Walker Watersheds PCT-TYT Ebbetts Pass (3 PM) 36.0 −11 (21.8) +0.20 8660 feet Trail Map 33 & 19 +/+ West of PCT (9 PM) Highlands Meadow 4.59 −1.27 (20.58) +0.82 8360 feet Trail Map 30 & 11 +/− Top of List EAST FLANK Leavitt Lake (3 PM) 63.0 −7.0 (17.70) +0.40 9602 feet, East Flank Trail Map 34 & 16 +/+ EAST FLANK (9 PM) Marine Base Cold Weather Training 6748 feet East Flank Trail Map Above FULL REPORT VIS-CHIL-WEA-MB- WIND 58 & 34 +/+ Mokelumne-Stanislaus Watersheds PCT-TYT (8 PM) Sonora Pass Kennedy Meadows RESUPPLY Deadman Creek 21.14 −6.09 (--.--) 9250 feet,West Flank, Trail Map 33 & −5 +/+ Tuolumne-Merced Watersheds SW of TYT (10 PM) Horse Meadow Error =0.4 ??? 8602 feet Trail Map 33 & 3 +/− Top of List Tenaya Lake (10 PM) 29.74 −5.73 (5.13) +0.52 8163 feet, West Flank Trail Map 33 & 11 −/− JMT-PCT-TYT (10PM) Tuolumne Meadows 13.15 −6.89 (4.23) +0.17 8600 feet, West Flank Trail Map 41 & 7 +/− Tioga Pass/Dana ERROR +ERROR (2.01) +0.30 ?? 9798 feet Trail Map 35 & 5 +/+ Mammoth Mountain Mono Lake-Owens Basin East of PCT-JMT Above Gem Lake Gem Pass (error) 10750 feet Trail Map temps bad JMT-PCT Junction Devils Postpile 0.13 −8.24 (9.02) +0.07 8004 feet Trail Map Above 37 & 13 +/− NE of JMT-PCT Mammoth Pass 41.12 −10.9 (1.96) = +1.32 9500 feet Trail Map 34 & 11 +/+ Top of List JMT-PCT E of Bear Ridge Volcanic Knob 32.20 −1.6 (0.00) = ?? 10100 feet Trail Map 38 & 3 +/− East Flank South Lake Cabin no snow sensor (29.20) =0.0 9580 feet, East Flank Trail Map 39 & 8 =/+ East Flank Big Pine Sawmill 14.10 −3.5 10200 feet, East Flank Trail Map Above 36 & 5 +/+ Kings River Just East JMT-PCT Bishop Pass (bad) (0.0) = 11972 feet Trail Map Above -- & -- −/− (earlier) Just West JMT-PCT Charlotte Lake 17.91 −ERROR?- (73.17) +0.14 10398 feet, West Flank Trail Map 33 & 4 +/− (Typically the coldest station) Kern Watershed JMT-PCT Upr Tyndall Creek 32.37 −3.78 11441 feet Trail Map 35 & 10 +/+ JMT Crabtree Meadow xx.xx ERROR −X.XX (34.21) +0.18 10,700 feet Trail Map 36 & 6 +/− ? = questionable data All High Sierra Reporting Stations More Stations, by Watersheds Top of List 2017 Weather Status & Potential 2016 Marine Weather; No precip. Snotel Station Reports Current Snow Depth Carson Pass 37 & 24 degrees, 85" Ebbetts Pass 32 & 22 degrees, 87"' Sonora Pass 31 & 23 degrees, 67" Tuolumne Meadows 5 & 30 degrees, 54" 2016	9 Cloudy to Clearing WARM Weak Tropical Lows Approach See Note, Feb 22 Warnings NWS RENO E SIERRA WEEKEND ADV Upcoming Weekend NWS SACTO NADA NWS HANFORD Winter Advisory Tuesday-Tuesday Night Flash Flood Warning Tuesday-Tuesday Night NWS VEGAS E. SIERRA FLANK FLSH FLD Tuesday Night 2020 Snowpack: Percent of Average for March 9. N Sierra: 42% -5% in 7 days Cen. Sierra: 37% −7% in 7 days S Sierra: 35% −4% in 7 days Ca State: 38% −6% in 7 days Last Reading Mar 2 Next Reading Mar 17 Statewide Summary of Snow Water Content PDF Last 100% Reading December 26, 2019 LAST WEEK NEXT WEEK TOP This Week TOP	10 Clear to Cloudy WARM Weak Tropical Flow Influenced by Weak Offshore Low Sweeps South of SoCal See Note, Feb 22 Warnings NWS RENO E SIERRA WEEKEND ADV Upcoming Weekend NWS SACTO NADA NWS HANFORD Winter Advisory Tuesday-Tuesday Night Flash Flood Warning Tuesday-Tuesday Night NWS VEGAS E. SIERRA FLANK FLSH FLD Tuesday Night Now RADAR SATELLITES 2019 Current Snowpack: Percent of Average for March 10. N Sierra: 156% -2% in 3 days Cen. Sierra:165% +1% in 3 days S Sierra: 162% +2% in 3 days Ca State: 161% =0% in 3 days 2019 REALTIME High Sierra Crestline Reporting Stations WINTER 2020 Fall to Winter Compare Today with Snow & Temperatures on March 8 March 2 Feb 27 Feb 20 Feb 10 Feb 3 Jan 28 Jan 23 Jan 13 & 17 Jan 8 Jan 2 Dec 30 Dec 24	11 Increasing Clouds Cooler, Still Warm BEST FORECASTS HAZARDS Precipitation General Quantitative Precipitation Forecasts: ALL RAIN FORECASTS & MODELS Direct to Seven Day Precip Animation Precipitation Geographic All High Sierra ZONE & POINT FORECASTS All High Sierra ZONE FORECASTS Now RADAR SATELLITES Direct to 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 This Week TOP	12 Increasing Clouds Cooler, Still Warm Northern Low Approachs The Script Flips Our last weak storm came out of the Southwest, out of the Tropics. Not this one. This weak storm is coming out of the North, pushed down uder a vast decending High... All Maps Point Forecasts Lake Tahoe Forecast Walker Forecast Sonora Pass Forecast Cherry Lake Forecast Lee Vining Forecast Tuolumne Meadows Mammoth Pass Lake Thomas Edison Mount Whitney-Lone Pine Lake Isabella Forecast Move the Map Dot to Customize Forecast Point Trail Maps 2018 Snow Depths & Temps 2017 Snow & Temps	13 Increasing Clouds Warm Northern Low Approachs Warnings NWS RENO E SIERRA WEEKEND ADV Fri-Mon NWS SACTO Winter Storm Warning Sat-Mon NWS HANFORD Winter Watch Sat-Mon Informative "Normal" Vs. Now Forcasts & Reality vs. Averages See Note, Feb 22 Station Reports The FIFTEENTH --WINTER-- Temp-Snow Check March 13 2020 5 PM - 5 PM Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and 24 hour high-low temps. Last Report: March 8 Next Report: March 17 Tahoe Basin Watershed Southwest Tahoe Trail Map with Stations PCT-TYT-TRT (3 PM) Rubicon 30.0 +4.00 (14.30) + 0.10 7618 feet Trail Map 46 & 33 +/+ PCT-TYT-TRT (3 PM) Echo Peak 35.0 −3 (22.20) − 0.10 7652 feet Stations Map 47 & 32 +/+ American-Yuba Watersheds PCT-TYT Carson Pass 34.0 −2 (16.20) =0.00 8388 feet Trail Map Stations Map 46 & 26 +/+ Carson-Walker Watersheds PCT-TYT Ebbetts Pass 35.0 −1 (21.9) +0.10 8660 feet Trail Map 43 & 27 +/+ West of PCT Highlands Meadow 1.11 −3.48 (21.08) +0.50 8360 feet Trail Map 38 & 20 +/+ Top of List EAST FLANK Leavitt Lake 62.0 −1.0 (17.70) =0.00 9602 feet, East Flank Trail Map 41 & 27 +/+ EAST FLANK Marine Base Cold Weather Training 6748 feet East Flank Trail Map Above FULL REPORT VIS-CHIL-WEA-MB- WIND 58 & 23 =/− Mokelumne-Stanislaus Watersheds PCT-TYT Sonora Pass Kennedy Meadows RESUPPLY Deadman Creek 19.28 −1.86 (--.--) 9250 feet,West Flank, Trail Map 40 & 5 +/+ Tuolumne-Merced Watersheds SW of TYT (10 PM) Horse Meadow Error =0.4 ??? 8602 feet Trail Map 42 & 23 +/+ Top of List Tenaya Lake (10 PM) 25.98 −3.76 (5.13) = 0.00 8163 feet, West Flank Trail Map 42 & 25 +/+ JMT-PCT-TYT (10PM) Tuolumne Meadows 8.43 −4.72 (4.23) =0.00 8600 feet, West Flank Trail Map 45 & 23 +/+ Tioga Pass/Dana ERROR +ERROR (2.06) +0.05 ?? 9798 feet Trail Map 39 & 20 +/+ Mammoth Mountain Mono Lake-Owens Basin East of PCT-JMT Above Gem Lake Gem Pass (error) 10750 feet Trail Map temps bad JMT-PCT Junction Devils Postpile 0.08 −0.05 (9.07) +0.05 8004 feet Trail Map Above 44 & 26 +/+ NE of JMT-PCT Mammoth Pass 40.71 −0.41 (2.08) = +0.12 9500 feet Trail Map 41 & 27 +/+ Top of List JMT-PCT E of Bear Ridge Volcanic Knob 32.20 −1.6 (0.00) = ?? 10100 feet Trail Map 38 & 3 +/− East Flank South Lake Cabin no snow sensor (29.20) =0.0 9580 feet, East Flank Trail Map 46 &27 =/+ East Flank Big Pine Sawmill 13.20 −0.9 10200 feet, East Flank Trail Map Above 40 & 25 +/+ Kings River Just East JMT-PCT Bishop Pass (bad) (0.0) = 11972 feet Trail Map Above -- & -- −/− (earlier) Just West JMT-PCT Charlotte Lake 0.03 −17.88?- (73.68) +0.51 10398 feet, West Flank Trail Map 36 & 26 +/+ (Typically the coldest station) Kern Watershed JMT-PCT Upr Tyndall Creek 32.95 +0.58 11441 feet Trail Map 36 & 19 +/+ JMT Crabtree Meadow xx.xx ERROR −X.XX (34.68) +0.47 10,700 feet Trail Map 37 & 24 +/+ ? = questionable data All High Sierra Reporting Stations More Stations, by Watersheds Top of List This Week TOP	14 Weak Lows Moving Down Ca Coast Warnings NWS RENO E SIERRA FIRE WATCH!? Fri-Mon NWS SACTO Winter Storm Warning Sat-Mon NWS HANFORD Winter Watch Sat-Mon LOWs Dragging & Pushing WET Cold Fronts The end of the Fronts leading to these Lows appear to be shifting from being rooted in the Arctic to the Tropics... MAPS The Pacific Ocean All Maps CalTrans Tahoe to Whitney & PCT--JMT Hikers Order food, prep resupply packages, and repair gear: TRAINED? ... Resupply LAST WEEK NEXT WEEK TOP 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%) 2018 2016 No precip. Snotel Station Reports Current Snow Depth Carson Pass 32 & 28 degrees, 93 " Ebbetts Pass 32 & 28 degrees, 91"' Sonora Pass 33 & 28 degrees, 69" Tuolumne Meadows 26 & 32 degrees, 56" 2016 LAST WEEK NEXT WEEK TOP LAST WEEK NEXT WEEK TOP LAST WEEK NEXT WEEK TOP
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15 Showers Light Precip LAST WEEK NEXT WEEK TOP 2017 March Snow Depths & Temps March 2016 An Average-Dry Year 2016 Sustained period of no rain beginning now until April 9.	16 Showers & Clearing Light Precip Diminishing Clearing at Evening Brings COLD Night Model Five Day Mean Low Temps Click Green "Latest" Model, observe using step button *All Temps* 2017 TTM setting up to begin Monday-Tuesday next? (Tropical Transport Mechanism)	17 Saint Pat's Day Clearing Light Showers Diminishing -- Ending LOW Over NW Nevada Clearing Evenings Bring COLD Nights 2020 Snowpack: Percent of Average for March 17 N Sierra: 48% +6% in 8 days Cen. Sierra: 50% +13% in 8 days S Sierra: 39% +4% in 8 days Ca State: 47% +9% in 8 days Last Reading Mar 9 Next Reading Mar 24 Statewide Summary of Snow Water Content PDF Last 100% Reading December 26, 2019 Station Reports The SIXTEENTH --WINTER-- Temp-Snow Check March 17 2020 2 PM - 2 PM Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and 24 hour high-low temps. Last Report: March 13 Next Report: March 25 Tahoe Basin Watershed Southwest Tahoe Trail Map with Stations PCT-TYT-TRT Rubicon 63.0 +33.00 (18.20) + 3.90 !! 7618 feet Trail Map 31 & 18 −/− PCT-TYT-TRT Echo Peak 74.0 +39 (27.90) + 5.70 !! 7652 feet Stations Map 32 & 18 −/− American-Yuba Watersheds PCT-TYT Carson Pass 74.0 +40 (21.20) +5.00 !! 8388 feet Trail Map Stations Map 31 & 14 −/− Carson-Walker Watersheds PCT-TYT Ebbetts Pass 63.0 +28 (27.10) +5.20 !! 8660 feet Trail Map 32 & 14 −/− West of PCT Highlands Meadow 14.22 +13.11 (23.29) +2.21 8360 feet Trail Map 27 & 13 −/− Top of List EAST FLANK Leavitt Lake 91.0 +29.0 (20.90) +3.20 9602 feet, East Flank Trail Map 29 & 11 −/− EAST FLANK Marine Base Cold Weather Training 6748 feet East Flank Trail Map Above FULL REPORT VIS-CHIL-WEA-MB- WIND 34 & 21 −/− Mokelumne-Stanislaus Watersheds PCT-TYT Sonora Pass Kennedy Meadows RESUPPLY Deadman Creek 26.27 +6.99 (--.--) 9250 feet,West Flank, Trail Map 26 & 2 −/− Tuolumne-Merced Watersheds SW of TYT Horse Meadow Error =0.4 ??? 8602 feet Trail Map 26 & 10 −/− Top of List Tenaya Lake 49.35 +23.37 (5.29) + 0.16 ?? 8163 feet, West Flank Trail Map 30 & 1 −/− JMT-PCT-TYT (10PM) Tuolumne Meadows 16.52 +8.09 (4.96) +0.73 ?? 8600 feet, West Flank Trail Map 31 & 0 −/− Tioga Pass/Dana ERROR +ERROR (2.08) +0.02 ?? 9798 feet Trail Map 24 & 0 −/− Mammoth Mountain Mono Lake-Owens Basin East of PCT-JMT Above Gem Lake Gem Pass (error) 10750 feet Trail Map temps bad JMT-PCT Junction Devils Postpile 16.59 +16.51 !! (10.28) +1.21 8004 feet Trail Map Above 27 & 5 −/− NE of JMT-PCT Mammoth Pass 73.49 +32.78 (6.72) = +4.64 9500 feet Trail Map 26 & 4 −/− Top of List JMT-PCT E of Bear Ridge Volcanic Knob 40.10 +7.9 (0.00) = ?? 10100 feet Trail Map 28 & −4 −/− East Flank South Lake Cabin no snow sensor (29.30) +0.1 9580 feet, East Flank Trail Map 24 & 2 −/− East Flank Big Pine Sawmill 17.80 +4.6 10200 feet, East Flank Trail Map Above 20 & 0 −/− Kings River Just East JMT-PCT Bishop Pass (bad) (0.0) = 11972 feet Trail Map Above -- & -- −/− (earlier) Just West JMT-PCT Charlotte Lake 4.38 +4.35 ?- (73.81) +0.13 10398 feet, West Flank Trail Map 23 & −7 −/− (Typically the coldest station) Kern Watershed JMT-PCT Upr Tyndall Creek 35.39 +2.44 11441 feet Trail Map 18 & −2 −/− JMT Crabtree Meadow xx.xx ERROR −X.XX (34.98) +0.30 10,700 feet Trail Map 20 & −7 −/− ? = questionable data All High Sierra Reporting Stations More Stations, by Watersheds Top of List	18 Showers & Clearing Light Precip Diminishing COOL Days At Elevation... COLD Nights HIGH SIERRA SNOW INFO All Snow Info SNOW STATUS & FORECASTS THE SNOWPACK *GRAPHICS* Date-Adjustable High Sierra Snowpack Status NOAA-NOHRSC The High Sierra 3-18-20 Point Forecasts Lake Tahoe Forecast Walker Forecast Sonora Pass Forecast Cherry Lake Forecast Lee Vining Forecast Tuolumne Meadows Mammoth Pass Lake Thomas Edison Mount Whitney-Lone Pine Lake Isabella Forecast Move the Map Dot to Customize Forecast Point Trail Maps 2015 UPDATE Virtually No Rain, hot temperatures, little snow in the Sierra. Carson Pass measures 22 inches. Tuolumne Meadows .20 of an inch 2015	19 Vernal Equinox First Day of Spring Happens Wednesday, March 20, 2020 at 03:50 Universal Time, So because our local, "Daylight Savings Time," puts us 7 hours behind Greenwich, PDT = UT - 7 (PDT Shift) 03:50 - 7hr = 8:50 PM, March 19, PDT. The Vernal Equinox VIDEO A Terrestrial Year from Space, APOD, March 19, 2017. Trail Guide Seasonal Observer Time References This Week TOP BEST FORECASTS HAZARDS Precipitation General Quantitative Precipitation Forecasts: ALL RAIN FORECASTS & MODELS Direct to Seven Day Precip Animation Precipitation Geographic All High Sierra ZONE & POINT FORECASTS All High Sierra ZONE FORECASTS Now RADAR SATELLITES Direct to 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 This Week TOP This Week TOP This Week TOP	20 Vernal Equinox First Day of Spring 8:50 PM, March 19, PDT. Cloudy to Clearing Light Precip Diminishing 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%) 2018	21 Cloudy to Clearing LAST WEEK NEXT WEEK TOP 2019 Current Snowpack: Percent of Average for March 21. N Sierra: 151% -1% in 3 days Cen. Sierra:160% -5% in 3 days S Sierra: 154% =% in 3 days Ca State: 156% =% in 3 days 2019 LAST WEEK NEXT WEEK TOP LAST WEEK NEXT WEEK TOP LAST WEEK NEXT WEEK TOP
Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
22 Increasing Clouds Cooler, Still Warm Southern Low Approachs The Script Flips Our last weak storm came out of the North, around the Gulf Alaska. Not this one. This weak storm is coming out of the South, slipping around the bottom of a vast decending High... With Northern Lows coming around its top at the same time! See March 12, above LAST WEEK NEXT WEEK TOP 2017 March Snow Depths & Temps LAST WEEK NEXT WEEK TOP	23 Scattered Showers Light Precip Point Forecasts Lake Tahoe Forecast Walker Forecast Sonora Pass Forecast Cherry Lake Forecast Lee Vining Forecast Tuolumne Meadows Mammoth Pass Lake Thomas Edison Mount Whitney-Lone Pine Lake Isabella Forecast Move the Map Dot to Customize Forecast Point Trail Maps 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%) 2018 This Week TOP	24 Showers Light Precip 2020 Snowpack: Percent of Average for March 24 N Sierra: 51% +3% in 8 days Cen. Sierra: 53% +3% in 8 days S Sierra: 41% +2% in 8 days Ca State: 49% +2% in 8 days Last Reading Mar 17 Statewide Summary of Snow Water Content PDF HIGH SIERRA SNOW INFO All Snow Info SNOW STATUS & FORECASTS THE SNOWPACK *GRAPHICS* Date-Adjustable High Sierra Snowpack Status NOAA-NOHRSC The High Sierra 3-24-20	25 Clouds Clearing Diminishing Showers Cooler Warning NWS HANFORD Winter Advisory Thru Thursday Afternoon 2020 Snowpack: Percent of Average for March 25 N Sierra: 53% +2% in 1 day Cen. Sierra: 55% +2% in 1 day S Sierra: 42% +1% in 1 day Ca State: 51% +2% in 1 day Last Reading Mar 24 Next Reading Mar 31 Statewide Summary of Snow Water Content PDF Clearing at Evening Brings COLD Night Station Reports The FIRST --SPRING-- Temp-Snow Check March 25 2020 Afternoon-Evening Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and 24 hour high-low temps. Last Report: March 17 Next Report: March 31 Tahoe Basin Watershed Southwest Tahoe Trail Map with Stations PCT-TYT-TRT Rubicon 63.0 =0.00 (18.20) + 1.80 !! 7618 feet Trail Map 29 & 20 −/+ PCT-TYT-TRT Echo Peak 71.0 −3 (29.10) +1.20 7652 feet Stations Map 27 & 20 −/+ American-Yuba Watersheds PCT-TYT Carson Pass 67.0 −7.0 (22.50) +1.30 8388 feet Trail Map Stations Map 28 & 19 −/+ Carson-Walker Watersheds PCT-TYT Ebbetts Pass 68.0 +5 (28.60) +1.50 !! 8660 feet Trail Map 25 & 18 −/+ West of PCT Highlands Meadow 20.41 +6.19 (24.50) +1.21 8360 feet Trail Map 21 & 15 −/+ Top of List EAST FLANK Leavitt Lake 99.0 +8 (22.60) +1.7 9602 feet, East Flank Trail Map 23 & 17 −/+ EAST FLANK Marine Base Cold Weather Training 6748 feet East Flank Trail Map Above FULL REPORT VIS-CHIL-WEA-MB- WIND 42 & 27 +/+ Mokelumne-Stanislaus Watersheds PCT-TYT Sonora Pass Kennedy Meadows RESUPPLY Deadman Creek 43.23 +16.96 (--.--) 9250 feet,West Flank, Trail Map 22 & 17 +/+ Tuolumne-Merced Watersheds SW of TYT Horse Meadow Error =0.4 ??? 8602 feet Trail Map 24 & 16 −/+ Top of List Tenaya Lake 52.13 +2.78 (5.29) = 0.00 ?? 8163 feet, West Flank Trail Map 24 & 18 −/+ JMT-PCT-TYT (10PM) Tuolumne Meadows 15.95 −0.57 (5.74) +0.78 ?? 8600 feet, West Flank Trail Map 27 & 17 −/+ Tioga Pass/Dana ERROR +ERROR (2.09) +0.01 ?? 9798 feet Trail Map 19 & 12 −/+ Mammoth Mountain Mono Lake-Owens Basin East of PCT-JMT Above Gem Lake Gem Pass (error) 10750 feet Trail Map temps bad JMT-PCT Junction Devils Postpile 18.51 +1.92 (11.31) +1.03 8004 feet Trail Map Above 25 & 21 −/+ NE of JMT-PCT Mammoth Pass 78.73 +5.24 (9.08) = +2.36 9500 feet Trail Map 21 & 17 −/+ Top of List JMT-PCT E of Bear Ridge Volcanic Knob 44.60 +4.5 (0.00) = ?? 10100 feet Trail Map 27 & 14 −/+ East Flank South Lake Cabin no snow sensor (29.50) +0.2 9580 feet, East Flank Trail Map 26 & 15 +/+ East Flank Big Pine Sawmill 16.30 1.5 10200 feet, East Flank Trail Map Above 24 & 12 +/+ Kings River Just East JMT-PCT Bishop Pass (bad) (0.0) = 11972 feet Trail Map Above -- & -- −/− (earlier) Just West JMT-PCT Charlotte Lake 4.06 −0.32 ?- (74.45) +0.64 10398 feet, West Flank Trail Map 24 & 10 +/+ (Typically the coldest station) Kern Watershed JMT-PCT Upr Tyndall Creek 34.50 −0.89 11441 feet Trail Map 24 & 10 +/+ JMT Crabtree Meadow xx.xx ERROR −X.XX (35.29) +0.31 10,700 feet Trail Map 26 & 9 +/+ ? = questionable data All High Sierra Reporting Stations More Stations, by Watersheds Top of List 2015 Carson Pass 21 inches of snow 42 degrees at 11am Ebbetts Pass 13 inches of snow 43 degrees at 11am	26 Clouds Clearing Diminishing Showers Cooler Clearing at Evening Brings COLD Night Warnings NWS RENO NADA NWS SACTO NADA 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 2019 Our Selected REALTIME High Sierra Crestline Reporting Stations REPORTING The SPRING of 2020 Compare Today with Snow & Temperatures on <-- March 25 WINTER March 17 March 8 & 13 March 2 Feb 27 Feb 20 Feb 10 Feb 3 Jan 28 Jan 23 Jan 13 & 17 Jan 8 Jan 2 Dec 30 Dec 24 Setting the Table for WINTER Fall to Winter 2019 Reports	27 Clouds Deepening Late Showers Informative "Normal" Vs. Now Forcasts & Reality vs. Averages 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% 2017 This Week TOP This Week TOP This Week TOP This Week TOP	28 Showers Light AM Precip LAST WEEK NEXT WEEK TOP BEST FORECASTS HAZARDS Precipitation General Quantitative Precipitation Forecasts: ALL RAIN FORECASTS & MODELS Direct to Seven Day Precip Animation Precipitation Geographic All High Sierra ZONE & POINT FORECASTS All High Sierra ZONE FORECASTS Now RADAR SATELLITES Direct to 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 LAST WEEK NEXT WEEK TOP LAST WEEK NEXT WEEK TOP LAST WEEK NEXT WEEK TOP
Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
29 . Showers Waves of Light Precip LAST WEEK NEXT MONTH Top 2017 March Snow Depths & Temps	30 Showers Spotty Light Precip Diminishing HIGH SIERRA SNOW INFO All Snow Info SNOW STATUS & FORECASTS THE SNOWPACK *GRAPHICS* Date-Adjustable High Sierra Snowpack Status NOAA-NOHRSC The High Sierra 3-31-20	31 Clouds Clearing Warming Nicely 2020 Snowpack: Percent of Average for March 31 N Sierra: 56% +3% in 6 days Cen. Sierra: 56% +1% in 6 days S Sierra: 45% +3% in 6 days Ca State: 53% +2% in 6 days Last Reading Mar 25 Statewide Summary of Snow Water Content PDF Snow Depth at Carson Pass 2020, Today Carson Pass 61" 2019, the 28th Carson Pass 117 " 2018, Today Carson Pass 67" 2017, the 24th Carson Pass 124" 2016, the 14th Carson Pass 93" 2015, the 25th Carson Pass 21 inches of snow Station Reports The SECOND --SPRING-- Temp-Snow Check March 31 2020 Early Afternoon Below: Watershed Snow Water Content Charts followed by individual reporting station's Snow Depth and 24 hour high-low temps. Last Report: March 25 Next Report: April 6, 2020 Tahoe Basin Watershed Southwest Tahoe Trail Map with Stations PCT-TYT-TRT Rubicon 53.0 −10.00 (20.30) + 2.1 !! 7618 feet Trail Map 40 & 35 +/+ PCT-TYT-TRT Echo Peak 61.0 −10 (30.00) +0.90 7652 feet Stations Map 40 & 34 −/+ American-Yuba Watersheds PCT-TYT Carson Pass 61.0 −6.0 (22.80) +0.30 8388 feet Trail Map Stations Map 38 & 33 +/+ Carson-Walker Watersheds PCT-TYT Ebbetts Pass 57.0 −11 (29.20) +0.60 8660 feet Trail Map 39 & 31 +/+ West of PCT Highlands Meadow 20.20 −0.21 (25.32) +0.82 8360 feet Trail Map 36 & 28 +/+ Top of List EAST FLANK Leavitt Lake 93.0 −6 (23.90) +1.3 9602 feet, East Flank Trail Map 38 & 31 +/+ EAST FLANK Marine Base Cold Weather Training 6748 feet East Flank Trail Map Above FULL REPORT VIS-CHIL-WEA-MB- WIND 52 & 25 +/− Mokelumne-Stanislaus Watersheds PCT-TYT Sonora Pass Kennedy Meadows RESUPPLY Deadman Creek 32.26 −10.97 (--.--) 9250 feet,West Flank, Trail Map 42 & 23 +/+ Tuolumne-Merced Watersheds SW of TYT Horse Meadow Error =0.4 ??? 8602 feet Trail Map 40 & 30 +/+ Top of List Tenaya Lake 46.91 −5.22 (7.27) +1.98 8163 feet, West Flank Trail Map 47 & 26 +/+ JMT-PCT-TYT (10PM) Tuolumne Meadows 14.03 −1.92 (5.99) +0.25 8600 feet, West Flank Trail Map 47 & 26 +/+ Tioga Pass/Dana ERROR +ERROR (2.09) =0.01 ?? 9798 feet Trail Map 40 & 26 +/+ Mammoth Mountain Mono Lake-Owens Basin East of PCT-JMT Above Gem Lake Gem Pass (error) 10750 feet Trail Map temps bad JMT-PCT Junction Devils Postpile 11.73 −6.78 (12.05) +0.74 8004 feet Trail Map Above 51 & 20 +/− NE of JMT-PCT Mammoth Pass 74.29 −4.44 (9.08) = +2.36 9500 feet Trail Map 21 & 17 −/+ Top of List JMT-PCT E of Bear Ridge Volcanic Knob 46.60 +2.0 (0.00) = ?? 10100 feet Trail Map 50 & 21 +/+ East Flank South Lake Cabin no snow sensor (29.50) =0.0 9580 feet, East Flank Trail Map 53 & 25 +/+ East Flank Big Pine Sawmill 14.50 −1.8 10200 feet, East Flank Trail Map Above 47 & 22 +/+ Kings River Just East JMT-PCT Bishop Pass (bad) (0.0) = 11972 feet Trail Map Above -- & -- −/− (earlier) Just West JMT-PCT Charlotte Lake 4.21 +0.15 (75.09) +0.64 10398 feet, West Flank Trail Map 44 & 20 +/+ (Typically the coldest station) Kern Watershed JMT-PCT Upr Tyndall Creek 35.64 +1.14 11441 feet Trail Map 44 & 25 +/+ JMT Crabtree Meadow 3.32 ERROR −X.XX (35.58) +0.29 10,700 feet Trail Map 44 & 22 +/+ ? = questionable data All High Sierra Reporting Stations More Stations, by Watersheds Top of List	1 APRIL 2020 Clouds Clearing Nice Point Forecasts Lake Tahoe Forecast Walker Forecast Sonora Pass Forecast Cherry Lake Forecast Lee Vining Forecast Tuolumne Meadows Mammoth Pass Lake Thomas Edison Mount Whitney-Lone Pine Lake Isabella Forecast Move the Map Dot to Customize Forecast Point Trail Maps 2017 Current Snowpack: Percent of Average for April 1. N Sierra: 147% Cen. Sierra: 175% S Sierra: 166% Ca State: 164% 2017 Snow Depths & Temps Our Selected REALTIME High Sierra Crestline Reporting Stations REPORTING The SPRING of 2020 Compare Today with Snow & Temperatures on March 25 WINTER March 17 March 8 & 13 March 2 Feb 27 Feb 20 Feb 10 Feb 3 Jan 28 Jan 23 Jan 13 & 17 Jan 8 Jan 2 Dec 30 Dec 24 Setting the Table for WINTER Fall to Winter 2019 Reports	2 APRIL 2020 Clouding Up Nice 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 2019 This Week TOP This Week TOP This Week TOP This Week TOP	3 APRIL 2020 Moderate Storm Approaching Informative "Normal" Vs. Now Forcasts & Reality vs. Averages TRENDS Week-Month- 3 Months DROUGHT CONSIDERATIONS Mountain Safety AVALANCHE DANGERS Winter Backpacking Considerations 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%) 2018	4 APRIL 2020 Moderate Storm AM Showers LAST WEEK NEXT MONTH Top BEST FORECASTS HAZARDS Precipitation General Quantitative Precipitation Forecasts: ALL RAIN FORECASTS & MODELS Direct to Seven Day Precip Animation Precipitation Geographic All High Sierra ZONE & POINT FORECASTS All High Sierra ZONE FORECASTS Now RADAR SATELLITES Direct to 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 LAST WEEK NEXT MONTH Top LAST WEEK NEXT MONTH Top LAST WEEK NEXT MONTH Top

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Lake Tahoe to Mount Whitney

Your guide to backpacking the Sierra Crest, including the Tahoe to Yosemite, Pacific Crest, and John Muir Trails

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