THIS AVALANCHE ADVISORY EXPIRED ON April 3, 2017 @ 6:40 am
Avalanche Advisory published on April 2, 2017 @ 6:40 am
Issued by Steve Reynaud - Tahoe National Forest

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

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 as daytime warming occurs.  If afternoon rain materializes, loose wet avalanche activity could become more widespread on all aspects.  Avoid areas with deep, wet, and unsupportable snow.  Even small loose wet avalanches can have consequences in steep terrain or where terrain traps exist.

recent observations

Observations were made and received from Jakes Peak (West Shore area), Negro Canyon (Donner Summit area), and Flagpole Peak (Echo Summit area).  All areas reported warming conditions through the day with decreasing winds.  Supportable crusts existed in the morning with good travel conditions before becoming unsupportable wet snow by the mid day.  Minor skier triggered roller balls were reported at all locations.

Weather and CURRENT CONDITIONS
weather summary

Sunny skies this morning will give way to increasing clouds, slightly cooler temperatures, and a chance of light precipitation this afternoon.  For Monday, temperatures will drop another 5-10 degrees with a north flow as this disturbance moves past our area.  After a warm up mid week, there is a chance for a weak to moderate atmospheric river to impact our area next weekend.

Weather observations from along the Sierra Crest between 8200 ft. and 8800 ft.
0600 temperature: 30 to 42 deg. F.
Max. temperature in the last 24 hours: 51 deg. F.
Average wind direction during the last 24 hours: E shifting to NW
Average wind speed during the last 24 hours: 10 to 20 mph
Maximum wind gust in the last 24 hours: 31 mph
New snowfall in the last 24 hours: 0 inches
Total snow depth: 118 to 173 inches
Two-Day Mountain Weather Forecast Produced in partnership with the Reno NWS
For 7000 ft. to 8000 ft.
Sunday Sunday Night Monday
Weather: Sunny then becoming partly cloudy. Slight chance of showers in the afternoon. Mostly cloudy. Slight chance of showers. Partly cloudy then becoming sunny. Chance of showers in the morning.
Temperatures: 42 to 48 deg. F. 26 to 31 deg. F. 35 to 41 deg. F.
Wind Direction:
Wind Speed: Light winds. Light winds. Light winds.
Expected snowfall: 0 in. Up to 1 in. 0 in.
For 8000 ft. to 9000 ft.
Sunday Sunday Night Monday
Weather: Sunny then becoming partly cloudy. Slight chance of showers in the afternoon. Mostly cloudy. Slight chance of showers in the evening then chance of showers after midnight. Partly cloudy then becoming sunny. Slight chance of showers in the morning.
Temperatures: 41 to 47 deg. F. 23 to 28 deg. F. 34 to 40 deg. F.
Wind Direction: NW NW W shifting to NE in the afternoon.
Wind Speed: 10 to 15mph with gusts to 40mph. 10 to 15mph with gusts to 35mph after midnight. 10 to 20mph with gusts to 45mph.
Expected snowfall: 0 in. Up to 1 in. Up to 1 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