Snow Avalanche Guidance
Issued by NWS Missoula, MT

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FWUS45 KMSO 210915

Backcountry Forecast for western Montana and north central Idaho
National Weather Service Missoula MT
315 AM MDT Wed Mar 21 2018

DISCUSSION: Other than a few isolated showers this afternoon and
evening, today is expected to be a fairly mild day with
temperatures around normal. Beginning Thursday, widespread
precipitation with locally heavy showers (and possibly
thunderstorms) will move across the area under warm southwest
flow. Snow levels will rise above 6000 feet on Thursday, but
rapidly fall as a cold front passes late Thursday night into
Friday. This front will be associated with breezy west-southwest
winds, colder temperatures, and snow levels dropping to valley
floors by Friday into Saturday. Cool and showery weather is
forecast for Saturday and Sunday. Then, a warmer and drier trend
is possible early next week.

Elevations above 4,000 FT:

                      Today        Tonight      Thu
Cloud Cover           70%          80%          85%
Hi/Lo Temps           35 to 47     25 to 32     40 to 50
Winds(mph)            S  6         S  7         SE  9G23
Precip Chc            20           40           60
Precip Type           sno/shr      showers      showers
Liquid Amt            0.01         0.02         0.11
Snow Ratio(SLR)       14:1         11:1         10:1
Snow Amt(in)          0            0            0-2

Snow Level            3500         5500         5500

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