681  
FXUS65 KMSO 082041  
AFDMSO  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE MISSOULA MT  
241 PM MDT MON AUG 8 2022  
   
DISCUSSION
 
A RIDGE OF HIGH PRESSURE WILL CONTINUE TO BE A  
DOMINANT FEATURE OVER THE NORTHERN ROCKIES FOR THE NEXT SEVERAL  
DAYS. TEMPERATURES WILL BE STEADILY CLIMBING WITH MOST VALLEY  
LOCATIONS BEING IN THE 90S AND 100S. THESE EXTREME TEMPERATURES  
WILL ONCE AGAIN CAUSE HEAT RISK ISSUES FOR THE LOWER VALLEYS OF  
NORTH CENTRAL IDAHO, ESPECIALLY AROUND OROFINO AND RIGGINS IDAHO.  
 
MONSOONAL MOISTURE WILL BE MOVING NORTHWARD UNDER THE RIDGE AXIS.  
SHOWERS AND THUNDERSTORMS DEVELOPMENT IS EXPECTED TUESDAY  
AFTERNOON ALONG THE OREGON/WASHINGTON/IDAHO BORDER WITH THE  
POTENTIAL OF THE CAMAS PRAIRIE OF IDAHO EXPERIENCING A STORM OR  
TWO. THE MONSOONAL MOISTURE SHIFTS EASTWARD ON WEDNESDAY COVERING  
THE MAJORITY OF THE NORTHERN ROCKIES. SCATTERED TO WIDESPREAD  
CONVECTION IS ANTICIPATED FOR WEDNESDAY AFTERNOON AND EVENING,  
PARTICULARLY SOUTH OF THE I-90 CORRIDOR. THE MOISTURE IS  
ANTICIPATED TO LINGER THROUGHOUT THE REMAINDER OF THE WORK WEEK  
ALLOWING FOR THE DEVELOPMENT OF AFTERNOON AND EVENING CONVECTION.  
 
THE RIDGE IS EXPECTED TO FLATTEN AND SHIFT EASTWARD EVEN MORE THIS  
WEEKEND. THIS FLOW PATTERN WILL CAUSE THE MONSOONAL MOISTURE TO  
EXIT THE REGION ALONG WITH INCREASED WESTERLY WINDS DURING THE  
AFTERNOON. TEMPERATURES SHOULD BE SLIGHTLY COOLER, BUT STILL  
REMAIN ABOVE SEASONAL AVERAGES.  
 

 
   
AVIATION
 
HIGH PRESSURE WILL CONTINUE TO CAUSE FAIR FLYING  
CONDITIONS ACROSS THE NORTHERN ROCKIES. SMOKE FROM AREA WILDFIRES  
COULD CAUSE REDUCED VISIBILITY TO THE LOCAL VICINITY OF THE FIRE,  
PARTICULARLY KSMN.  
 

 
   
MSO WATCHES/WARNINGS/ADVISORIES
 
 
MT...NONE.  
ID...HEAT ADVISORY UNTIL 11 PM PDT TUESDAY NORTHERN CLEARWATER  
MOUNTAINS.  
 
HEAT ADVISORY UNTIL 11 PM PDT TUESDAY LOWER HELLS CANYON/SALMON  
RIVER REGION...OROFINO/GRANGEVILLE REGION.  
 

 
 

 
 
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