977
FXUS65 KGGW 131903
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
103 PM MDT TUE OCT 13 2026
KEY MESSAGES
- DRY CONDITIONS ARE EXPECTED THROUGH EARLY NEXT WEEK, BUT COOL
TEMPERATURES WILL CONTINUE THROUGH THURSDAY, WITH LOW
TEMPERATURES NEAR TO BELOW FREEZING.
- A GRADUAL WARMING TREND THROUGH THE WEEKEND. TEMPERATURES LOOK
TO PEAK ON SATURDAY.
DISCUSSION
EXPECT DRY CONDITIONS THROUGH EARLY NEXT WEEK BUT A COUPLE COLD
FRONTS ARE EXPECTED TO BRING SOME WIND AND KNOCK TEMPS DOWN
SLIGHTLY.
TONIGHT, WITH CLEAR SKIES AND LIGHT WINDS, THE MAIN CHALLENGE WILL
BE FOG. WITH DEWPOINTS IN THE 30S THIS AFTERNOON AND EXPECTED LOWS
TO BE IN THE 20S, IT DOESN'T TAKE A ROCKET SCIENTIST TO KNOW THAT
FOG IS POSSIBLE TONIGHT. IT SEEMS THAT THE MILK RIVER FROM SACO TO
GLASGOW AND SOUTH ON THE EAST SIDE OF FORT PECK LAKE LOOK BEST TO
SEE IT FORM TONIGHT. THE 12Z HREF AND 12Z HRRR SEEM TO CATCH THIS
THINKING BEST BUT NEW MODELS AND LATER FORECASTS WILL HAVE A
BETTER HANDLE ON THIS. A DENSE FOG ADVISORY MAY BE ISSUED.
FOG SHOULD DISSIPATE WEDNESDAY MORNING. SOME MIXING AND PARTIAL
SUNSHINE SHOULD ALLOW TEMPS TO REACH THE 50S NORTH TO THE LOW 60S
SOUTH.
THE FIRST COLD FRONT DROPS THROUGH WEDNESDAY NIGHT BUT ENOUGH
MIXING SHOULD ALLOW MOST PLACES TO REMAIN ABOVE FREEZING. EXPECT A
COOLER DAY THURSDAY WITH HIGHS IN THE UPPER 40S AND 50S. NW WINDS
COULD BRING THE NEED FOR A LAKE WIND ADVISORY IF THEY INCREASE.
THEREAFTER, TEMPS WARM AND PEAKING SATURDAY. ANOTHER COLD FRONT
DROPS IN SATURDAY NIGHT.
THE NEXT CHANCE FOR PRECIP LOOKS TO BE MID WEEK NEXT WEEK.
FORECAST CONFIDENCE & DEVIATIONS:
NBM NUMBERS LOOKED GOOD AND DID NOT TOUCH TOO MUCH.
DID TWEAK VISIBILITY AND WEATHER GRIDS TOWARD WHAT THE 12Z HREF
AND 12Z HRRR HAD FOR TONIGHT AND WEDNESDAY MORNING. AGAIN, LATER
SHIFTS SHOULD HAVE A BETTER HANDLE ON THIS. TFJ
AVIATION
LAST UPDATED: 1900Z
FLIGHT CAT RANGE: VFR THEN IFR/LIFR POSSIBLE LATE TONIGHT.
DISCUSSION: FOG IS EXPECTED TO DEVELOP AGAIN TONIGHT POSSIBLY
BRINGING LIFR CONDITIONS. TAF AMENDMENTS ARE POSSIBLE. CLEARING
BY WEDNESDAY AFTERNOON IS EXPECTED.
WINDS: LIGHT WINDS OVERNIGHT, LESS THAN 10 KTS. THEN A SLIGHT
INCREASE FROM THE SOUTH (LESS THAN 10KTS WEDNESDAY). TFJ
GGW WATCHES/WARNINGS/ADVISORIES
NONE.
WEATHER.GOV/GLASGOW
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