050  
FXUS65 KBOI 222206  
AFDBOI  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE BOISE ID  
306 PM MST WED JAN 22 2020  
   
SHORT TERM...TONIGHT THROUGH SATURDAY
 
A WEAK WARM FRONT,  
ASSOCIATED WITH A SYSTEM OFF THE PACIFIC NORTHWEST COAST, WILL  
MOVE THROUGH THE REGION LATE THIS AFTERNOON INTO THE EVENING.  
EXPECT SHOWERS TO INCREASE THIS AFTERNOON AS THIS FEATURE MOVES  
THROUGH. SNOW LEVELS WILL RISE TO AROUND 6500 FEET ACROSS EASTERN  
OR AND SOUTH OF THE SNAKE BASIN IN IDAHO, WITH LOWER SNOW LEVELS  
OF 3500-4500 FT ACROSS THE IDAHO MOUNTAINS AND IN BAKER COUNTY OR.  
PRECIPITATION WILL TAPER OFF ON THURSDAY MORNING AS A DIRTY RIDGE  
BUILDS INTO THE REGION AHEAD OF THE COLD FRONT. EXPECT MILD  
TEMPERATURES FOR MOST PLACES ON THURSDAY WITH VALUES REACHING THE  
LOW 50S ACROSS SNOW-FREE PORTIONS OF THE SNAKE BASIN. A WEAK COLD  
FRONT WILL MOVE THROUGH ON FRIDAY MORNING, WITH A BETTER CHANCE  
OF PRECIPITATION ACROSS MUCH OF THE REGION. SNOW LEVELS WILL BE  
AROUND 7000 FT ACROSS EASTERN OR AND SOUTH OF THE SNAKE BASIN IN  
IDAHO, WITH LOWER SNOW LEVELS OF 4500-5500 FEET ACROSS THE IDAHO  
MOUNTAINS AND IN BAKER COUNTY OR, BEFORE THE COLD FRONT LOWERS  
SNOW LEVELS TO 4500-5500 FEET ON FRIDAY AFTERNOON. EXPECT A BRIEF  
DRY PERIOD ON SATURDAY MORNING BEFORE THE NEXT SYSTEM FOLLOWS ON  
SATURDAY AFTERNOON. TEMPERATURES WILL REMAIN AROUND 10 DEGREES  
ABOVE NORMAL FOR THIS PERIOD. WINDS ARE NOT SUBSTANTIAL DURING  
THIS PERIOD.  
   
LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY
 
MODELS ALL AGREE  
IN KEEPING THE PROGRESSIVE PATTERN IN PLACE THROUGH THE ENTIRE  
EXTENDED PERIOD. A SERIES OF SYSTEMS ARE EXPECTED TO MOVE THROUGH  
THE REGION IN A WEST/SOUTHWEST FLOW ALOFT SUNDAY THROUGH TUESDAY.  
SNOW LEVELS ARE EXPECTED TO REMAIN FAIRLY HIGH WITH AROUND 5000  
FEET ACROSS BAKER COUNTY AND MCCALL AND 5-6000 FEET ACROSS THE  
SOUTH. THOSE LEVELS BRIEFLY DROP TO AROUND 3500-4000 FEET MONDAY  
MORNING AS THE FLOW SHIFT NW. AN UPPER RIDGE ONCE AGAIN BUILDS  
BACK INTO THE REGION WEDNESDAY. DAYTIME HIGHS ARE EXPECTED TO  
REMAIN ABOUT 5 TO 10 DEGREES ABOVE NORMAL THROUGH THE PERIOD.  
 

 
   
AVIATION
 
VFR-MVFR CONDITIONS EXPECTED WITH POCKETS OF IFR NEAR  
KONO/KBKE TO LINGER THROUGH THE AFTERNOON. CONDITIONS BECOMING  
MVFR-IFR THROUGH THE EVENING AND OVERNIGHT IN LOW CLOUDS AND  
SHOWERS WITH MTNS OBSCURED. SNOW LEVELS NEAR 4000 FEET ACROSS  
KBKE/KMYL AND 5-6000 FEET ACROSS THE SOUTH. SURFACE WIND VARIABLE  
AT LESS THAN 10 KTS. WINDS ALOFT NEAR 10KFT WEST TO NORTHWEST 25  
TO 40 KTS, DECREASING TO 15 TO 25 KTS AFT 23/15Z.  
 

 
   
BOI WATCHES/WARNINGS/ADVISORIES
 
 
ID...NONE.  
OR...NONE.  
 

 
 

 
 
WWW.WEATHER.GOV/BOISE  
WWW.FACEBOOK.COM/NWSBOISE  
WWW.TWITTER.COM/NWSBOISE  
 
SHORT TERM...KA  
LONG TERM....CR  
AVIATION.....CR  
 
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