Snow Avalanche Guidance
Issued by NWS Missoula, MT

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FWUS45 KMSO 270924

Backcountry Forecast for western Montana and north central Idaho
National Weather Service Missoula MT
324 AM MDT FRI MAR 27 2015

DISCUSSION: High pressure will be in place over western Montana
and north central Idaho today, leading to dry and warm
conditions. Temperatures will be around 15 degrees above normal. A
trough of low pressure and associated cold front is expected to
pass through the region early Saturday morning. This will bring a
rapid lowering of snow levels to around 5000 feet, widespread
precipitation, and windy conditions. West winds at ridge tops
could reach up to 50 mph. The highest terrain, generally 6000 feet
and above, will likely receive several inches of snow with this
quick moving system. Weak high pressure will build back into the
area Sunday into Monday, allowing temperatures to warm back above
normal by Monday and largely ending precipitation. A cooler,
active weather pattern is anticipated Tuesday through much of next

Elevations above 4,000 FT:

                      TODAY        TONIGHT      SAT
Cloud Cover           55%          65%          85%
Hi/Lo Temps           53 to 65     32 to 40     41 to 51
Winds(mph)            SW  7G21     SW 12G36     W 21G55
Precip Chc            0            60           80
Precip Type           none         tstms        showers
Liquid Amt            0.00         0.11         0.38
Snow Ratio(SLR)       0            10:1         20:1
Snow Amt(in)          0            0            1-8

Snow Level            8500         9000         6000

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