290
FXUS65 KGGW 210722
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
122 AM MDT SAT MAR 21 2026
KEY MESSAGES
- LOOK FOR COOLER TEMPERATURES THIS WEEKEND ACROSS NE MONTANA
ALONG WITH CHANCES FOR LIGHT RAIN SHOWERS AT TIMES.
- MILD AND DRY WEATHER EXPECTED TO RETURN EARLY NEXT WEEK.
- ADDITIONAL RAIN CHANCES LOOK TO ENTER THE SCENE BY LATE TUESDAY
INTO WEDNESDAY. AGAIN, PRECIPITATION GENERALLY LOOKS LIGHT.
DISCUSSION
WEATHER PATTERN OVERVIEW:
COOLER TEMPERATURES WILL BE IN PLACE OVER THE CWA FOR THE WEEKEND
WITH SPOTTY LIGHT RAIN SHOWER CHANCES AT TIMES. MEANWHILE,
ENSEMBLE 500MB HEIGHTS LOOK TO CARVE OUT THE NEXT RIDGE PATTERN
OVER THE WESTERN U.S. FOR EARLY NEXT WEEK WITH A RETURN TO DRY AND
MILD WEATHER CONDITIONS.
THIS RIDGE HOWEVER LOOKS TO QUICKLY FLATTEN WITH EMBEDDED
SHORTWAVES TRACKING THROUGH THE REGION FROM THE WEST. THESE WILL
PROVIDE ENOUGH FORCING FOR ASCENT FOR SCATTERED RAIN COVERAGE
AGAIN BY ABOUT TUESDAY NIGHT INTO WEDNESDAY. COOLER TEMPERATURES
LOOK TO FOLLOW THE SHORTWAVE ACTION LATE IN THE WEEK AS CONDITIONS
DRY OUT.
FORECAST CONFIDENCE & DEVIATIONS:
NEAR TERM WINDS WERE ADJUSTED TO INCLUDE A THIRD NBM90 TO BETTER
REFLECT THE INTERPOLATION FROM CURRENT OBSERVATIONS EXPECTED TO
CONTINUE TODAY. OTHERWISE, NBM GUIDANCE WORKED REMARKABLY WELL FOR
PRODUCING A FAIRLY PROGRESSIVE PATTERN WITH FLUCTUATING
TEMPERATURES AND OCCASIONAL PRECIPITATION CHANCES DURING THE
BALANCE OF THE UPCOMING WEEK. WILL CAUTION HOWEVER GIVEN THE
SPOTTY COVERAGE AND LIGHT NATURE OF THE PRECIPITATION CHANCES AT
TIMES THIS WEEK, CONFIDENCE ON EXACT LOCATIONS AND AMOUNTS IS
BELOW AVERAGE DESPITE AGREEMENT ON THE SYNOPTIC VIEW.
AVIATION
LAST UPDATE: SATURDAY MARCH 21 AT 0715Z
FLIGHT CATEGORY: VFR
DISCUSSION: VFR CONDITIONS THROUGH THE TAF CYCLE. MOSTLY CLOUDY
SKIES WILL TEND TO PREVAIL THROUGH THE PERIOD, ALONG WITH ISOLATED
TO SCATTERED LIGHT RAIN CHANCES.
WIND: WEST TO NORTHWEST AT 15 TO 25 KTS, DECREASING TO 5 TO 10 KT
TONIGHT. WINDS LOOK TO SWITCH NORTH AND NORTHEAST DURING THE
EVENING HOURS.
GGW WATCHES/WARNINGS/ADVISORIES
NONE.
WEATHER.GOV/GLASGOW
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