Snow Avalanche Guidance
Issued by NWS Missoula, MT

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FWUS45 KMSO 261059
SAGMSO

Backcountry Forecast for western Montana and north central Idaho
National Weather Service Missoula MT
359 AM MST FRI DEC 26 2014

DISCUSSION: A weak disturbance will continue to pass through the
area Friday morning, especially for north central Idaho. Although
moisture with this system is low, increasing snow ratios may allow
for a couple quick inches of snow.

Forecast models continue to indicate a significant storm for this
weekend. Moderate to heavy snow is expected across the region,
with the heaviest snow currently expected over northwest Montana
and into the Clearwater Mountains of Idaho. As a colder airmass
works into the region Sunday, snow ratios will increase, causing
snow to become increasingly light and fluffy. Gusty northeast
winds will develop with this cold push Sunday afternoon and
evening, especially for western Montana. Much colder temperatures
are expected by the start of the week, with low temperatures
reaching well below zero, especially in western Montana.

For the latest information on watches, warnings and advisories,
go to weather.gov/missoula.

&&
Elevations above 4,000 FT:

                      TODAY        TONIGHT      SAT
Cloud Cover           75%          70%          90%
Hi/Lo Temps           18 to 28     8 to 17      20 to 29
Winds(mph)            SW  4        SW  7G20     SW 14G33
Precip Chc            50           40           100
Precip Type           sno/shr      snow         snow
Liquid Amt            0.03         0.01         0.15
Snow Ratio(SLR)       23:1         24:1         15:1
Snow Amt(in)          0-1          0            2-3

Snow Level            500          500          1000

$$


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