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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