599  
FXUS65 KBOI 300839  
AFDBOI  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE BOISE ID  
239 AM MDT SUN APR 30 2017  
   
SHORT TERM
 
SHORT WAVE RIDGE PASSED THROUGH OUR AREA SATURDAY.  
A WEAK NORTH PACIFIC TROUGH AND SURFACE COLD FRONT WILL PASS  
THROUGH TODAY. EXTENSIVE MID AND HIGH CLOUDS HAVE KEPT TEMPS  
UP THIS NIGHT. SHOWERS TODAY WILL BE CONFINED TO BAKER COUNTY,  
OR, AND IDAHO NORTH OF THE SNAKE BASIN. MAX TEMPS TODAY WILL  
BE MUCH LIKE YESTERDAY BUT MONDAY WILL BE 1 OR 2 DEGREES COOLER.  
MIN TEMPS TONIGHT WILL BE COOLER THAN THIS NIGHT AS CLOUDS  
DECREASE. WEST/NORTHWEST WINDS WILL BLOW 15 TO 30 MPH IN THE  
UPPER TREASURE VALLEY AND WESTERN MAGIC VALLEY TODAY AND AGAIN  
MONDAY, 10 TO 20 MPH IN EASTERN OREGON, AND 5 TO 15 MPH ELSEWHERE.  
   
LONG TERM
 
TUESDAY THROUGH SUNDAY. A CLOUDY BUT MOSTLY DRY  
NORTHWEST FLOW WILL DOMINATE TUESDAY. SHOWERS ALONG THE DIVIDE  
ARE POSSIBLE, BUT AN AMPLIFYING RIDGE OFF THE COAST WILL QUICKLY  
PUSH THAT ACTIVITY WELL TO THE EAST. THE UPPER LEVEL RIDGE WILL  
KEEP CONDITIONS DRY AND WARM ON WEDNESDAY AND ESPECIALLY THURSDAY  
WHEN THE AXIS IS EXPECTED TO BE OVERHEAD. HIGHS ON THESE DAYS ARE  
EXPECTED TO BE 10-15 DEGREES ABOVE NORMAL. FOR FRIDAY AND BEYOND,  
THE GFS AND ECMWF HAVE COME INTO BETTER AGREEMENT ON ANOTHER TROUGH  
MOVING INLAND BEHIND THE RIDGE. BOTH MODELS ALSO HAVE THIS TROUGH  
TRANSITIONING INTO A CUT-OFF LOW SOMEWHERE TO THE SOUTH OF IDAHO,  
BUT THE POSITIONING IS THE MAIN SOURCE OF UNCERTAINTY.  
 

 
   
AVIATION
 
VFR WITH MID-HIGH LEVEL CLOUDS. ISOLATED SHOWERS NEAR  
KBKE AND KMYL THROUGH 01/02Z. SURFACE WINDS: LIGHT SOUTH/SOUTHEAST,  
THEN AFTER 30/15Z TURNING NORTHWEST 10-15 KTS. GUSTS 20-30 KTS IN  
VALLEYS UNTIL 01/02Z. WINDS ALOFT NEAR 10 KFT MSL: WEST 20-30 KTS.  
 

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

 
 

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