928
FXUS65 KGGW 291550 AAA
AFDGGW
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE GLASGOW MT
950 AM MDT THU JUL 29 2021
DISCUSSION
SENT AN UPDATE THIS MORNING MAINLY TO DROP TEMPERATURES A FEW
DEGREES DUE TO THE EXTENSIVE CLOUD COVER, AND TO ADJUST CHANCES
FOR PRECIPITATION, FOLLOWING RECENT RADAR TRENDS BLENDING WITH THE
BEST NEAR-TERM MODEL CONSENSUS I COULD FIND. SPOTTY, HIT-AND-MISS
SEEMS TO BE THE BEST DESCRIPTION OF CHANCES FOR RAIN SHOWERS TODAY
THROUGH TONIGHT.
PREVIOUS DISCUSSION: A SHORTWAVE MOVES ACROSS THE RIDGE IN
MONTANA TODAY AND THIS EVENING WITH SOME MONSOONAL MOISTURE THAT
COULD PRODUCE A FEW SHOWERS AND THUNDERSTORMS WITH THE BEST CHANCE
BEING SOUTH OF THE MISSOURI RIVER. MANY AREAS WILL SEE LITTLE OR
NO MEASURABLE PRECIPITATION WITH A VERY DRY ATMOSPHERE IN THE
LOWER LEVELS WITH THIS SYSTEM. CLOUD COVER TODAY WILL KEEP
TEMPERATURES SOMEWHAT COOLER THAN THEY HAVE BEEN LATELY. SKIES
WILL CLEAR LATE TONIGHT AS THE WAVE MOVES TO THE EAST.
THE RIDGE AXIS BACKS TO THE WEST TONIGHT AND BUILDS OVER THE
CANADIAN ROCKIES AND WESTERN MONTANA AND IDAHO ON FRIDAY. THIS
WILL TURN THE FLOW ALOFT TO THE NW ON FRIDAY. CLEAR SKIES WILL
ALLOW FOR WARMER TEMPERATURES THAT WILL BE IN THE MID 80S TO MID
90S FOR HIGHS.
THE RIDGE EXPANDS INTO ALL OF MONTANA OVER THE WEEKEND WITH HOT
AND DRY WEATHER CONTINUING WITH HIGHS IN THE 90S IN MOST AREAS.
THE RIDGE AXIS DRIFTS EAST ON MONDAY KEEPING THE HOT AND DRY
WEATHER OVER THE AREA.
MODELS ARE POINTING TOWARDS A SHORTWAVE TROUGH MOVING INTO
WESTERN MONTANA ON MONDAY AND REACHES EASTERN MONTANA ON TUESDAY
THAT IS EXPECTED TO FLATTEN THE RIDGE. THE SYSTEM COULD BRING A
CHANCE OF SHOWERS AND THUNDERSTORMS.
AVIATION
LAST UPDATED: 1545Z
FLIGHT CAT: MAINLY VFR
SMOKE AND HAZE: TEMPORARY MVFR MAY OCCUR AT TIMES DUE TO HAZE AND
SMOKE. MOST HAZE RESTRICTIONS WILL REMAIN SOUTHWEST OF THE
TERMINALS THIS MORNING BUT COULD DRIFT INTO THE AREA THIS
AFTERNOON AND EVENING.
DISCUSSION: THERE WILL BE MID AND HIGH LEVEL CLOUDS MOST OF THE
TIME OVER THE AREA TODAY AND THIS EVENING BRINGING MONSOONAL
MOISTURE. ISOLATED SHOWERS AND THUNDERSTORMS ARE POSSIBLE BUT
SHOULD NOT RESTRICT VISIBILITY. SKIES WILL CLEAR LATE TONIGHT.
WIND: SOUTHEAST AT 5 TO 10 KTS THIS MORNING, INCREASING TO 10 TO
20 KTS THIS AFTERNOON. SOUTHEAST WINDS WILL DIMINISH TO 5 TO 10
KNOTS LATE TONIGHT.
GLASGOW WATCHES/WARNINGS/ADVISORIES
NONE.
WEATHER.GOV/GLASGOW
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page