746   
FXUS65 KGGW 150546  
AFDGGW  
  
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE GLASGOW MT  
1146 PM MDT MON SEP 14 2026  
   
KEY MESSAGES  
  
- DRY CONDITIONS WITH LIGHT WINDS OR DECREASING WINDS ARE   
  EXPECTED TODAY.  
  
- THE NEXT ROUND OF WIDESPREAD SHOWERS ARE EXPECTED TO MOVE IN  
  THURSDAY NIGHT AND EXITING LATE SATURDAY. 0.50" TO 1.00" AMOUNTS  
  ARE POSSIBLE IN THE EASTERN ZONES.  
  
  
   
DISCUSSION  
  
SYNOPTIC SETUP:  
STRONG LOW PRESSURE OVER SOUTH-CENTRAL CANADA WILL CONTINUE MOVING  
AWAY ALLOWING SURFACE LOW PRESSURE OVER THE NORTHERN ROCKIES TO  
OVERTOP THE CWA THIS AFTERNOON. THIS WILL ALLOW FOR DECREASING NW  
WINDS AND DECREASING CLOUDS ACROSS THE EASTERN ZONES.  
  
THE NEXT SYSTEM IS DROPPING INTO THE PACIFIC NW FROM THE NW. IT IS  
EXPECTED TO CONTINUE DROPPING SOUTH AND INTO NORTHERN CALIFORNIA  
WEDNESDAY AND THURSDAY BEFORE LIFTING INTO THE NORTHERN ROCKIES  
LATE THURSDAY OR FRIDAY. WITH DEWPOINTS EXPECTED TO BE IN THE 50S  
AND 60S FRIDAY, SHOWERS AND THUNDERSTORMS CAN BE EXPECTED. MODELS  
ARE SHOWING THE SYSTEM TO CUT-OFF AND DRIFT EAST ALLOWING THINGS  
TO GRADUALLY DRY OUT SATURDAY AND SATURDAY NIGHT.  
  
RAIN TOTALS WITH THIS SYSTEM COULD BE CLOSE TO AN INCH IN SOME  
PLACES IN THE EAST WITH PLACES IN THE WEST AT OR BELOW A QUARTER  
INCH.  
  
ENSEMBLES FOR NEXT WEEK ARE SHOWING SOME DRYING AND SLIGHTLY  
WARMER TEMPS.  
  
FORECAST CONFIDENCE & DEVIATIONS:  
- MAINLY RODE WITH NBM NUMBERS FOR THIS FORECAST PACKAGE.  
  
- CONFIDENCE IN RAIN CHANCES THIS WEEKEND ARE MODERATE. CONFIDENCE  
  IN RAIN TOTALS ARE LOW. NBM LOWERED RAIN TOTALS WITH THIS LATEST  
  RUN.  
  
TFJ  
  
  
   
AVIATION  
  
LAST UPDATED: 0545Z  
  
FLIGHT CAT RANGE: VFR.  
  
DISCUSSION: MAINLY VFR CLOUDS WITH SOME MVFR CLOUDS WILL GRADUALLY  
EXIT THIS MORNING AS HIGH PRESSURE MOVES IN FROM THE WEST. THEN  
SOME MID LEVEL CLOUDS (AT OR ABOVE 12K FT AGL) MOVE IN DURING THE  
AFTERNOON, THICKEST OVER KGGW, KOLF AND KSDY AIRPORTS.  
  
SFC WIND: NORTHWEST WINDS WILL BECOME LIGHT AND VARIABLE BY  
AFTERNOON THEN BECOME LIGHT EAST LATER TUESDAY.  
  
TFJ  
  
  
   
GGW WATCHES/WARNINGS/ADVISORIES  
  
NONE.  
  
  
  
  
WEATHER.GOV/GLASGOW  
 
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