SOUTHWEST TRAILS/GREY'S RIVER AREA NOWCAST
Issued at 12/09/2016 06:28 Valid until: 12/09/2016 23:59
CURRENT CONDITIONS (Mountain Weather Past 24 Hours)
|At 10,400' Elevation:
||5 AM Temp: 16 º F
||Max Temp: 16
||Avg Wind Direction: West-Southwesterly
||Avg. Wind Speed: 32
||Max Wind Gust: 83
||Total Snow Depth
|At 9,330' Elevation (Commissary Ridge Plot)
|At 9,000' Elevation (Blind Bull Meadow Plot)
|At 6,300' Elevation (Box Y Ranch Plot)
Mountain Weather Forecast for Today
light to moderate snowfall is expected throughout the day today.
|Temperature Forecast for 8,000´-9,000´:
||Rising into the mid twenties.
|Ridge Top Wind Forecast for 10,000´:
||Westerly at 20-30 mph.
|Snowfall Expected Next 24 Hours:
GENERAL AVALANCHE ADVISORY
The chance continues for a single backcountry rider or skier to trigger large and dangerous deep persistent slab avalanches at the upper elevations as well as smaller wind slab avalanches at all elevations. As new snow and strong winds occur today, these slabs will increase in sensitivity and new shallow soft wind slabs will develop. Careful snowpack evaluation, cautious route finding and conservative decisions are essential for safe travel in avalanche terrain.
Large destructive slab avalanches with depths to five feet could be triggered on east through north to west aspects above 8500 feet. These large slabs will be hard, and are likely to have crowns high up in the slide path although initiation may occur lower on the slope. Beware that a few tracks are not an indication of stability for this type of hazard. Larger triggers such as snow machines as more likely to trigger these deep instabilities.
Recently formed wind slabs and new soft slabs currently forming during this storm event could be triggered today. The newer wind slabs could have depths as large as eighteen inches by the end of the afternoon with a slight potential for older slabs to trigger with depths of an additional two feet.
For further information call 307-733-2664
To report an avalanche observation call 307-739-2607
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