809  
FXUS65 KGGW 030658  
AFDGGW  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE GLASGOW MT  
1258 AM MDT WED JUN 3 2026  
   
KEY MESSAGES  
 
- ISOLATED SHOWERS REMAIN POSSIBLE TODAY.  
 
- THE NEXT SYSTEM BRINGS SHOWERS/THUNDERSTORMS IN FROM THE WEST  
THURSDAY AFTERNOON AND NIGHT.  
 
 
   
DISCUSSION  
 
WEATHER PATTERN OVERVIEW:  
 
THE SLOW MOVING UPPER LOW WILL LINGER OVER SOUTHERN SASKATCHEWAN  
TODAY. MOST OF THE MOISTURE WILL STAY NORTH OF THE CANADIAN BORDER  
TODAY WITH ISOLATED SHOWERS EXPECTED AT TIMES. THE LOW DRIFTS  
EAST AND A SHORTWAVE RIDGE MOVES INTO THE AREA WITH DRY WEATHER.  
 
ON THURSDAY, THE NEXT SHORTWAVE WILL MOVE IN FROM THE WEST WITH  
CHANCES FOR SHOWERS AND THUNDERSTORMS MAINLY IN THE AFTERNOON AND  
EVENING. SOME OF THE STORMS MAY PRODUCE HEAVY RAINFALL AS  
PRECIPITABLE WATER WILL BE AROUND AN INCH OR SLIGHTLY HIGHER.  
 
THE NEXT SHORTWAVE RIDGE BRING DRY AND WARMER WEATHER ON FRIDAY.  
FLOW ALOFT TURNS SW ON SATURDAY WITH THE POTENTIAL OF BEING A HOT  
DAY IN THE EAST DEPENDING ON THE TIMING OF A COLD FRONT ACROSS THE  
REGION. THE COLD FRONT WILL BRING CHANCES FOR SHOWERS AND  
THUNDERSTORMS MAINLY SATURDAY NIGHT.  
 
MORE CONCERNING WILL BE A PROLONGED SW UPPER FLOW THAT SETS UP  
THIS WEEKEND AND BEYOND. THIS TIME OF YEAR COULD MEAN HIGHER THAN  
NORMAL THUNDERSTORMS OCCURRENCES THAT COULD BE SEVERE. FLASH  
FLOODING IS ALSO POSSIBLE WITH PRECIP WATER NEAR OR ABOVE AN INCH  
(NORMAL IS BETWEEN 0.50-0.75").  
 
FORECAST CONFIDENCE & DEVIATIONS:  
 
LOW CONFIDENCE IN TIMING ANY CHANCES FOR SHOWERS TODAY. LOW  
CONFIDENCE IN SHOWER AND THUNDERSTORM CHANCES THURSDAY NIGHT AND  
BEYOND. NO CHANGES TO BASE FORECAST AT THIS TIME.  
 
 
   
AVIATION  
 
UPDATED: 0700Z  
 
FLIGHT CATEGORY: A MIX OF MVFR AND VFR THIS MORNING. VFR THIS  
AFTERNOON AND TONIGHT.  
 
DISCUSSION: LOW CLOUDS THIS MORNING WILL PRODUCE MVFR CEILINGS AT  
TIMES AT KGGW AND KOLF. KSDY AND KGDV WILL HAVE MID LEVEL CLOUDS  
THIS MORNING WITH ISOLATED SHOWERS POSSIBLE. SKIES WILL GRADUALLY  
CLEAR THIS AFTERNOON AND EVENING WITH SOME DAYTIME CUMULUS  
EXPECTED. SKIES WILL BE MOSTLY CLEAR TONIGHT. WINDS WILL BE WEST  
TO NW 10 TO 15 KNOTS EARLY TURNING WEST DURING THE DAY TODAY AND  
NW AT 10 KNOTS OR LESS THIS EVENING.  
 
EQUIPMENT: KSDY OBS ARE UNAVAILABLE ONLINE AND WILL BE AMD NOT  
SKED.  
 
 
   
GGW WATCHES/WARNINGS/ADVISORIES  
 
NONE.  
 
 
 
 
WEATHER.GOV/GLASGOW  
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