Snow Avalanche Guidance
Issued by NWS Missoula, MT

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FWUS45 KMSO 011113
SAGMSO

Backcountry Forecast for western Montana and north central Idaho
National Weather Service Missoula MT
402 AM MST SUN FEB 1 2015

DISCUSSION: A wet and increasingly mild weather pattern is in
store for the next week. A weather disturbance will spread
primarily snow across north central Idaho and western Montana this
afternoon through Monday morning. Snow levels will begin to rise
(to roughly 4000-5000ft) Monday ahead of the next disturbance
Monday evening into Tuesday. A brief cooler airmass is possible
Wednesday as an arctic front brushes the Continental Divide,
bringing snow levels back down to near valley levels.

A significant tap of moisture with subtropical origins will bring
the potential for heavy precipitation Friday into Saturday. The
accompanying airmass will also be very mild, possibly allowing
snow levels to rise up to 6000-7000ft. Westerly winds will also be
on the increase during this period at ridge top level. More
details to follow in the coming days.

FOR THE LATEST INFORMATION ON WATCHES, WARNINGS AND ADVISORIES,
GO TO WEATHER.GOV/MISSOULA.

&&
Elevations above 4,000 FT:

                      TODAY        TONIGHT      MON
Cloud Cover           90%          95%          90%
Hi/Lo Temps           26 to 37     21 to 29     28 to 41
Winds(mph)            S  7G20      SW 10G24     W 12G30
Precip Chc            80           90           80
Precip Type           snow         snow         sno/rain
Liquid Amt            0.06         0.19         0.08
Snow Ratio(SLR)       18:1         16:1         16:1
Snow Amt(in)          1-2          3-5          1-2

Snow Level            1000         2500         3500

$$


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