SOUTHWEST TRAILS/GREY'S RIVER AREA FORECAST

Issued at 12/10/2018 06:45   Valid until: 12/10/2018 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 25 º F 26 West-Northwesterly 14 29
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' 0"/ 0.01 36" 78"
Blind Bull Meadow Plot 9,000' 0"/ 0.00" 26" 68"
Box Y Ranch Plot 6,300' 0"/ 0.00" 21" 44"
Mountain Weather Forecast for Today
Cloud cover is forecast to increase during the day
Temperature forecast for 8,000 - 9,000  
Temperatures at 10,000 feet have already warmed into the mid 20s. Valley temperatures are near zero this morning and will also rise into the 20s.
Ridge Top Wind Forecast for 10,000´
west-southwest to southwest at 15 to 25 miles per hour with higher gusts
Snowfall Expected Next 24 Hours
Trace
General Avalanche Advisory
At the mid and upper elevations a buried layer of faceted snow that formed in mid-November persists and is still weak. In steep terrain humans could trigger slab avalanches on this problem layer. Although it remains possible for the weight of a single person to trigger an avalanche on this layer; larger triggers, such as snowmobiles, may be more likely to initiate one of these slides. A careful evaluation of terrain and this persistent weak layer is warranted. Tracks on a slope should not be interpreted as an indication of stability. Avalanches are unlikely below an elevation of 8,000 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

Skiers and riders could trigger persistent slab avalanches up to two feet deep in steep terrain above an elevation of 8,000 feet.
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