THIS AVALANCHE ADVISORY EXPIRED ON April 4, 2017 @ 6:45 am
Avalanche Advisory published on April 3, 2017 @ 6:45 am
Issued by Steve Reynaud - Tahoe National Forest

Low avalanche danger this morning will increase to Moderate avalanche danger as daytime warming occurs.  Loose wet avalanches will become possible at all elevations.  Avoid slopes where wet, deep, and unsupportable snow exists.

2. Moderate

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Above Treeline
Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern.

2. Moderate

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Near Treeline
Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern.

2. Moderate

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Below Treeline
Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern.
    Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern.
Avalanche Problem 1: Loose Wet
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    Certain
    Very Likely
    Likely
    Possible
    Unlikely
  • Size ?
    Historic
    Very Large
    Large
    Small

Loose wet avalanches will become possible on E-SE-S-SW-W aspects at all elevations as daytime warming occurs.  Colder overnight tempertures with clear skies, and northerly winds today should prolong the window of supportable snow.  As the snow surface becomes wet and deep, it is time to move to a colder aspect or to leave the area.  Steep slopes and terrain traps can magnify the consequences of even small loose wet activity.

recent observations

Observations were received from Angora Peak (Echo Summit area) and National Geographic Bowl (Squaw Valley area).  Rapid warming was reported at both locations.  Little to no snow surface refreeze was observed on tree covered slopes at 8am on Angora Peak.  In open areas, good travel conditions existed at 10:15am with spring type snow conditions.  Small loose wet activity was starting to occur on Angora Peak during this time frame.  Large cornices, glide cracks, and creek crossings were additional hazards noted. 

Weather and CURRENT CONDITIONS
weather summary

Breezy NW-NE winds with 5-10 degrees of cooling for today as weak low pressure moves past our area to the north.  High pressure will build back into the area on Tuesday with highs getting into the low 60's at lake level by Wednesday.  A moderate atmospheric river is looking more likely for next weekend with strong winds, heavy rain, and mountain snow.

Weather observations from along the Sierra Crest between 8200 ft. and 8800 ft.
0600 temperature: 24 to 32 deg. F.
Max. temperature in the last 24 hours: 51 deg. F.
Average wind direction during the last 24 hours: W
Average wind speed during the last 24 hours: 15 to 25 mph
Maximum wind gust in the last 24 hours: 42 mph
New snowfall in the last 24 hours: 0 inches
Total snow depth: 117 to 172 inches
Two-Day Mountain Weather Forecast Produced in partnership with the Reno NWS
For 7000 ft. to 8000 ft.
Monday Monday Night Tuesday
Weather: Partly cloudy then becoming sunny. Clear then becoming partly cloudy. Partly cloudy.
Temperatures: 42 to 47 deg. F. 23 to 28 deg. F. 46 to 51 deg. F.
Wind Direction: W
Wind Speed: 10 to 15mph in the morning then becoming light. Gusts up to 30mph. Light winds. Gusts up to 20mph in the evening. Light winds.
Expected snowfall: 0 in. 0 in. 0 in.
For 8000 ft. to 9000 ft.
Monday Monday Night Tuesday
Weather: Partly cloudy then becoming sunny. Clear then becoming partly cloudy. Mostly cloudy.
Temperatures: 38 to 44 deg. F. 22 to 27 deg. F. 42 to 48 deg. F.
Wind Direction: NW to NE N SW
Wind Speed: NW 15 to 25mph with gusts to 55mph shifting to NE 15 to 25mph with gusts to 45mph in the afternoon. 15 to 20mph. Gusts to 40mph. 10 to 15mph with gusts to 30mph.
Expected snowfall: 0 in. 0 in. 0 in.
Disclaimer

This avalanche advisory is provided through a partnership between the Tahoe National Forest and the Sierra Avalanche Center. This advisory covers the Central Sierra Nevada Mountains between Yuba Pass on the north and Ebbetts Pass on the south. Click here for a map of the forecast area. This advisory applies only to backcountry areas outside established ski area boundaries. This advisory describes general avalanche conditions and local variations always occur. This advisory expires 24 hours after the posted time unless otherwise noted. The information in this advisory is provided by the USDA Forest Service who is solely responsible for its content.

For a recorded version of the Avalanche Advisory call (530) 587-3558 x258