SOUTHWEST TRAILS/GREY'S RIVER AREA FORECAST

Issued at 01/25/2020 06:50   Valid until: 01/25/2020 23:59

CURRENT CONDITIONS (Mountain Weather Past 24 Hours)
At 10,400' Elevation 5 AM Temp Max Temp Avg Wind Dir Avg. Wind Speed Max Wind Gust
Mt Coffin 14 º F 23 Westerly 15 39
View Temperature and Wind Graphs View Mt Coffin 48 Hr Wind Graph
Location Elevation Snowfall/Prec. Total Snow Depth Total Snowfall
Comissary Ridge Plot 9,330' 1"/ 0.10 81" 247"
Blind Bull Meadow Plot 9,000' 1"/ 0.10" 64" 191"
Box Y Ranch Plot 6,300' 0"/ 0.01" 40" 131"
Mountain Weather Forecast for Today
Mostly to partly cloudy skies are expected to thin throughout the day.
Temperature forecast for 8,000 - 9,000  
Mountain temperatures will climb into the mid-twenties, and valleys above freezing.
Ridge Top Wind Forecast for 10,000´
West winds at 15 to 25 miles per hour.
Snowfall Expected Next 24 Hours
0
General Avalanche Advisory
Below 7,500 feet, overnight temperatures were at or near freezing. These conditions have caused areas of the snowpack with faceted snow grains to become less stable, and in very steep, avalanche-prone terrain, isolated slabs 1 to 2 feet in depth may be human triggered. Above 7,500 feet, deep persistent slab avalanches remain a concern. Although these slabs are becoming increasingly more stubborn, if they are triggered the consequences will be severe. These slabs will most likely be triggered by a larger load, like a snow machine, or when a thin spot in the slab is crossed. Backcountry travelers also may be able to trigger an isolated pocket of wind slab on leeward slopes above 9,000 feet.

Today's Avalanche Problems

Persistent Slab

ASPECT/ELEVATION
Avalanche problem rose
CHARACTERISTICS
LIKELIHOOD
Certain
Very Likely
Likely
Possible
Unlikely
SIZE
Historic
Very Large
Large
Small
TREND
Steady trend

DESCRIPTION

Persistent weak layers of faceted snow that formed during extended dry periods in November and December continue to be a significant threat to backcountry travelers. Above 7,500 feet, these slabs could be triggered with depths ranging from four to seven feet.
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