Snowpack Summary published on April 7, 2021 @ 8:07 am
Issued by Jason Mozol - Bridgeport Avalanche Center

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Increasing loose wet avalanche danger exists today. Clear, sunny skies will quickly warm snow surfaces following an unsubstantial overnight refreeze. An early start and wise travel decisions to avoid avalanche terrain as snow becomes wet and unconsolidated are essential today. 

Avalanche Character 1: Loose Wet
Loose Wet avalanches occur when water is running through the snowpack, and release at or below the trigger point. Avoid very steep slopes and terrain traps such as cliffs, gullies, or tree wells. Exit avalanche terrain when you see pinwheels, roller balls, a slushy surface, or during rain-on-snow events.

Overnight temperatures reached the mid 30’s last night, setting up conditions for an unsubstantial refreeze of yesterdays wet snow at all elevations. That refreeze will quickly deteriorate as today’s sun reaches the snow surface. Indicators that wet loose avalanche conditions are rising include rollerballs, deep boot or ski penetration and snow shedding off of rocks. Observing any of these signs mean its time to find a more frozen aspect that has received less sun or move away from avalanche terrain altogether.  

Snowpack Discussion

Throughout the week, continued diurnal melt/freeze cycles are expected. The key to safe travel during these conditions is getting on snow early and exiting avalanche terrain before surface snow is thoroughly wet and unconsolidated. North and west aspects may remain supportable longer into the day but with a high sun angle this time of year, all aspects will become wet at some point in the day.  


CalTrans is currently plowing Hwy 108 and the road is snow free up to the Levitt Lake junction. Please park respectfully; leaving space for them to pass through with their equipment.  

CURRENT CONDITIONS Weather observations from Sonora Pass
0600 temperature: 36 deg. F.
Max. temperature in the last 24 hours: 48 deg. F.
Average wind direction during the last 24 hours: E-SW
Average wind speed during the last 24 hours: 5-10 mph
Maximum wind gust in the last 24 hours: 32 mph
New snowfall in the last 24 hours: 0 inches
Total snow depth: 0 inches

Skies are expected to remain clear into the weekend with high temperatures in the upper 40's to mid 50’s in the mountains. Gusty winds from the W-SW today will likely continue throughout the week. 

Two-Day Mountain Weather Forecast Produced in partnership with the Reno NWS
For 8000 ft. to 10000 ft.
  Wednesday Wednesday Night Thursday
Weather: Sunny Clear Sunny
Temperatures: 49-55 deg. F. 27-33 deg. F. 49-55 deg. F.
Wind direction: S-SW SW W
Wind speed: 10-20mph, gusting to 35mph 15mph, gusting to 30mph. Decreasing throughout the night Light gusts up to 15mph, increasing in the afternoon
Expected snowfall: 0 in. 0 in. 0 in.
For above 10000 ft.
  Wednesday Wednesday Night Thursday
Weather: Sunny Clear Sunny
Temperatures: 40-46 deg. F. 27-32 deg. F. 41-47 deg. F.
Wind direction: SW SW W
Wind speed: 15-30mph gusting to 50mph 20-30mph gusting to 65mph 15-30mph gusting to 55mph
Expected snowfall: 0 in. 0 in. 0 in.

This snowpack summary applies only to backcountry areas in the Bridgeport Winter Recreation Area. Click here for a map of the area. This snowpack summary describes general avalanche conditions and local variations always occur. This snowpack summary expires in 48 hours unless otherwise noted. The information in this snowpack summary is provided by the USDA Forest Service who is solely responsible for its content.