009  
FXUS65 KBOI 080903  
AFDBOI  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE BOISE ID  
303 AM MDT WED APR 8 2020  
   
SHORT TERM...TODAY THROUGH FRIDAY NIGHT
 
MILD, SPRINGLIKE  
WEATHER WITH MOSTLY CLEAR SKIES THROUGH FRIDAY. A LITTLE WARMER  
AGAIN TODAY, BUT THURSDAY AND FRIDAY WILL BE THE WARMEST DAYS AS  
AN UPPER LEVEL RIDGE IN THE PACIFIC NOSES IN ACROSS OREGON AND  
SOUTHERN IDAHO. HIGH TEMPS ON THOSE DAYS WILL BE IN THE UPPER  
50S TO NEAR 70 IN THE MOUNTAINS AND MID 60S TO MID 70S IN THE  
VALLEYS. SNOW LEVELS WILL PEAK FRIDAY AFTERNOON AROUND 7500  
FEET MSL IN NORTHERN AREAS TO 8500 FEET IN THE SOUTH. THIS WILL  
CAUSE SOME SNOWMELT BUT ALL RIVERS ARE FORECAST TO STAY WELL  
BELOW FLOOD STAGE, WITH A MODEST CREST EXPECTED SATURDAY. A  
SHORT WAVE TROUGH IN BC WILL DIG SOUTHWARD TOWARD WASHINGTON  
ON FRIDAY AND NORTHWEST FLOW ALOFT WILL INCREASE IN OUR CWA.  
NORTHWEST WINDS WILL ALSO INCREASE AT THE SURFACE FRIDAY, AND  
CLOUDS WILL INCREASE IN NORTHERN-MOST IDAHO ZONES FRIDAY NIGHT.  
   
LONG TERM...SATURDAY THROUGH WEDNESDAY
 
CLOUD COVER AND  
NORTHERLY WINDS WILL RAMP UP SATURDAY ASSOCIATED WITH A STRONG  
COLD FRONT APPROACHING FROM THE NORTH. AFTERNOON/EVENING WIND  
GUSTS OF 25-35 MPH WILL BE COMMON. FURTHERMORE, SOME MODEL  
GUIDANCES CURRENTLY SUGGEST GUSTS COULD REACH AS HIGH AS 40-50  
MPH FOR THE UPPER TREASURE/MAGIC VALLEYS AND SOUTHWEST HIGHLANDS  
OF IDAHO, SO WILL HAVE TO KEEP A CLOSE EYE ON THE COLD FRONT  
EVOLUTION AS IT GETS CLOSER. IN ADDITION, SHOWERS WILL INCREASE  
OVER W-CENTRAL AND S-CENTRAL IDAHO SATURDAY AFTERNOON INTO SUNDAY.  
SNOW LEVELS AROUND 5KFT MSL SATURDAY WILL RAPIDLY FALL TO VALLEY  
FLOORS LATE SATURDAY INTO SUNDAY. SNOW ACCUMULATIONS WILL BE  
RATHER LIGHT, HOWEVER, DUE TO LIMITED MOISTURE AVAILABILITY.  
TEMPERATURES WILL BECOME NOTABLY COLDER FOR SUNDAY/MONDAY AS  
NORTHERLY FLOW TAKES HOLD OVER THE REGION. DRIER WEATHER IS  
ANTICIPATED FOR LATE SUNDAY THROUGH WEDNESDAY, WITH SHOWERS  
STILL POSSIBLE FOR SOUTHWEST IDAHO MOUNTAINS.  
 

 
   
AVIATION
 
VFR. SURFACE WINDS: VARIABLE 10 KT OR LESS, BECOMING  
N TO NE 5-10 KT FOR SW IDAHO AND 10-20 KT FOR SE OREGON THIS  
AFTERNOON. WINDS WILL DECREASE AFTER SUNSET. WINDS ALOFT AT  
10KFT MSL: N TO NE 10-20 KT.  
 

 
   
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....SH  
AVIATION.....SH  
 
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