913  
FXUS65 KBOI 162047  
AFDBOI  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE BOISE ID  
247 PM MDT MON OCT 16 2017  
   
SHORT TERM...TONIGHT THROUGH THURSDAY
 
WARM AND DRY CONDITIONS  
EXPECTED AS THE FORECAST AREA REMAINS UNDER A WEAK UPPER LEVEL  
RIDGE. A WEAK SHORTWAVE TROUGH WILL WEAKEN THE RIDGE LATE TUESDAY  
AS IT MOVES ACROSS WASHINGTON STATE AND THE IDAHO PANHANDLE. THIS  
WILL INCREASE CLOUD COVER AND BRING A SLIGHT CHANCE OF SHOWERS  
ACROSS OUR NORTHERN ZONES. THE UPPER LEVEL FLOW BECOMES  
SOUTHWESTERLY AHEAD OF THE NEXT UPPER LEVEL TROUGH EXPECTED FOR  
THURSDAY NIGHT/FRIDAY. MODELS HAVE SLOWED THE TIMING OF THIS  
TROUGH BY ANOTHER 12 HOURS SO HAVE REMOVED PRECIPITATION MENTION  
FOR MOST AREAS ON THURSDAY. WINDS WILL INCREASE AHEAD OF THIS  
SYSTEM WHICH WILL ALLOW FOR UNSEASONABLY WARM TEMPERATURES.  
TEMPERATURES IN THE MID TO UPPER 60S IN THE LOWER VALLEYS ON  
TUESDAY WILL REACH THE MID 70S BY THURSDAY.  
   
LONG TERM...THURSDAY NIGHT THROUGH MONDAY
 
COOL AND OCCASIONALLY  
WET. PACIFIC COLD FRONT WILL BRING RAIN AND SNOW THURSDAY NIGHT AND  
FRIDAY, AND GUSTY WEST WINDS FRIDAY AFTERNOON. RAIN WILL TAPER OFF  
FRIDAY AFTERNOON IN OREGON AND FRIDAY EVENING IN IDAHO. NEXT PACIFIC  
STORM WILL BRING A WARM FRONT AND SIGNIFICANT RAIN SATURDAY  
AFTERNOON AND NIGHT, ESPECIALLY OVER NORTHERN AREAS. LIGHT RAIN WILL  
CONTINUE IN NORTHERN AREAS SUNDAY AND SUNDAY NIGHT BUT THE SOUTH  
WILL DRY OUT. MOSTLY CLOUDY MONDAY WITH A SLIGHT CHANCE OF RAIN  
CONTINUING IN THE NORTHERN MOUNTAINS UNDER STRONG MOIST WEST-  
NORTHWESTERLY FLOW ALOFT. FRIDAY WILL BE 15 TO 20 DEGREES COOLER  
THAN THURSDAY. SATURDAY WILL BE ANOTHER 2-4 DEGREES COOLER. SUNDAY  
AND MONDAY WILL START A WARMING TREND.  
 

 
   
AVIATION
 
VFR. MOSTLY CLEAR WITH THIN CIRRUS. SURFACE WINDS  
VARIABLE UP TO 10KT. WINDS ALOFT AT 10KFT MSL: WSW 15 TO 20KT.  
 

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

 
 

 
 
WWW.WEATHER.GOV/BOISE  
WWW.FACEBOOK.COM/NWSBOISE  
WWW.TWITTER.COM/NWSBOISE  
 
SHORT TERM...JDS  
LONG TERM....LC  
AVIATION.....LC  
 
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