861  
FXUS65 KBOI 061959  
AFDBOI  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE BOISE ID  
159 PM MDT SUN JUL 6 2025  
   
SHORT TERM...TONIGHT THROUGH TUESDAY NIGHT  
THE HEAT WILL  
BUILD THROUGH TUESDAY AS CIRCULATION AROUND A CLOSED LOW OFF THE  
CA INCREASES SOUTHERLY FLOW. MONDAY REMAINS DRY ACROSS THE  
REGION, THOUGH INCREASING MID-LEVEL MOISTURE WILL REVEAL ITSELF  
ALONG THE NV BORDER, AND MORE SO ACROSS WESTERN HARNEY COUNTY  
WITH THE DEVELOPMENT OF AFTERNOON CUMULUS. ANY SHOWER OR  
THUNDERSTORM THREAT ON MONDAY WILL REMAIN ACROSS NORTHERN CA AND  
S-CENTRAL OREGON. THE HEAT PEAKS ON TUESDAY WITH HIGHS AROUND  
100 THROUGH THE SNAKE PLAIN AND LOWER ELEVATIONS IN SE OREGON,  
WHILE MTN VALLEYS APPROACH 90. MODELS HAVE TRENDED A DEGREE OR  
TWO LOWER WITH RECENT SOLUTIONS AND ARE BORDERLINE ADVISORY  
LEVEL FOR THE LOWER TREASURE VALLEY ZONE (ONTARIO AREA) AND  
PORTIONS OF BAKER COUNTY, WHILE BELOW CRITERIA ELSEWHERE.  
GIVEN THE FORECAST TREND, HOLDING OFF ON ADVISORY FOR  
NOW. MOISTURE ALOFT WILL EXTEND NORTH AND EAST ON TUESDAY,  
INTRODUCING A 10-20% CHANCE OF AFTERNOON AND EVENING SHOWERS  
AND THUNDERSTORMS FROM NORTHERN HARNEY COUNTY, THROUGH BAKER  
COUNTY. WITH PRECIPITABLE WATER VALUES AROUND 0.50 INCHES  
(40-50TH %TILE) AND HOT/DRY LOWER SURFACE CONDITIONS, GUSTY  
OUTFLOW WINDS WOULD BE THE MOST LIKELY SHOWER/STORM ATTRIBUTE.  
   
LONG TERM...WEDNESDAY THROUGH SUNDAY  
THE CLOSED LOW OFF THE  
CA COAST, GETS LIFTED NORTH, THAN EASTWARD ON WEDNESDAY,  
TRACKING THROUGH SE OREGON AND SW IDAHO. THIS IS A NORTHWARD  
SHIFT FROM YESTERDAY AND IS LOOKING LIKE A FAVORABLE TRACK (AND  
TIMING) FOR SHOWER AND THUNDERSTORM DEVELOPMENT. HAVE INTRODUCED  
LOW CHANCE OF SHOWERS AND THUNDERSTORMS (15-20%) FOR WEDNESDAY  
AFTERNOON AND EVENING ACROSS SE OREGON AND PORTIONS OF SW IDAHO.  
THE BEST CHANCE FOR ACTIVITY WILL STRETCH FROM CENTRAL HARNEY  
AND MALHEUR COUNTIES NORTH AND EAST INTO THE W-CENTRAL IDAHO  
MTNS. THE TREASURE VALLEY LOOKS TO BE ON THE EASTERN FRINGE FOR  
DEVELOPMENT. DRY CONDITIONS RETURN FOR THE END OF THE WEEK AND  
NEXT WEEKEND. THE UPPER RIDGE IS SUPPRESSED THUR/FRI BY A  
PASSING UPPER TROUGH WHICH WILL ACT TO COOL TEMPERATURES TO  
NEAR NORMAL OR SLIGHTLY BELOW NORMAL. THE HEAT WILL RETURN NEXT  
WEEKEND (AND LIKELY INTO THE FOLLOWING WEEK) AS AN UPPER RIDGE  
REBUILDS OVER THE WESTERN US.  
 
 
   
AVIATION  
VFR WITH A FEW HIGH CLOUDS OVER TERRAIN. SURFACE  
WINDS: W-NW 5-15 KT BECOMING VARIABLE LESS THAN 6 KT OVERNIGHT.  
WINDS ALOFT AT 10KFT MSL: W-NW 10-20 KT.  
 
KBOI...VFR. SURFACE WINDS: W-NW 7-12 KT BECOMING VARIABLE LESS  
THAN 6 KT OVERNIGHT.  
 
 
   
BOI WATCHES/WARNINGS/ADVISORIES  
 
ID...NONE.  
OR...NONE.  
 
 
 
 
 
WWW.WEATHER.GOV/BOISE  
 
INTERACT WITH US VIA SOCIAL MEDIA:  
WWW.FACEBOOK.COM/NWSBOISE  
WWW.X.COM/NWSBOISE  
 
SHORT TERM...DG  
LONG TERM....DG  
AVIATION.....SA  
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