376  
FWUS45 KMSO 171056  
SAGMSO  
 
BACKCOUNTRY FORECAST FOR WESTERN MONTANA AND NORTH CENTRAL IDAHO  
NATIONAL WEATHER SERVICE MISSOULA MT  
356 AM MST MON FEB 17 2020  
 
DISCUSSION:  
 
NORTHWEST MONTANA: CONVECTIVE SNOW SHOWERS ARE EXPECTED THIS  
AFTERNOON AND EVENING, WITH GRAUPEL BEING POSSIBLE. A WEAK WAVE  
MOVING SOUTH OUT OF CANADA ON TUESDAY MAY ENHANCE SOME LIGHT  
SNOWFALL, PRIMARILY NEAR THE CONTINENTAL DIVIDE. HIGH PRESSURE  
WILL PROMOTE MOSTLY CLEAR AND CALM NIGHTS WEDNESDAY AND THURSDAY  
WITH WARMING TEMPERATURES IN THE TERRAIN AND VALLEY INVERSIONS.  
 
WEST CENTRAL MONTANA: CONVECTIVE SNOW SHOWERS ARE EXPECTED THIS  
AFTERNOON AND EVENING, WITH GRAUPEL BEING POSSIBLE. A WEAK WAVE  
MOVING SOUTH OUT OF CANADA ON TUESDAY MAY ENHANCE SOME LIGHT  
SNOWFALL, PRIMARILY NEAR THE CONTINENTAL DIVIDE. HIGH PRESSURE  
WILL PROMOTE MOSTLY CLEAR AND CALM NIGHTS WEDNESDAY AND THURSDAY  
WITH WARMING TEMPERATURES IN THE TERRAIN AND VALLEY INVERSIONS.  
 
CENTRAL IDAHO: CONVECTIVE SNOW SHOWERS ARE EXPECTED THIS  
AFTERNOON AND EVENING, WITH GRAUPEL BEING POSSIBLE. HIGH PRESSURE  
WILL PROMOTE MOSTLY CLEAR AND CALM NIGHTS WEDNESDAY AND THURSDAY  
WITH WARMING TEMPERATURES IN THE TERRAIN AND VALLEY INVERSIONS.  
 

 
ELEVATIONS ABOVE 4,000 FT:  
 
TODAY TONIGHT TUE  
CLOUD COVER 80% 65% 60%  
HI/LO TEMPS 19 TO 31 6 TO 14 17 TO 30  
WINDS(MPH) W 9 W 9G20 W 9  
PRECIP CHC 60 30 40  
PRECIP TYPE SNO/SHR SNOW SNOW  
LIQUID AMT 0.07 0.03 0.03  
SNOW RATIO(SLR) 21:1 23:1 22:1  
SNOW AMT(IN) 1-6 0-3 0-3  
 
SNOW LEVEL 1000 500 0  
 

 
 
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