296
FXUS65 KGGW 142108
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
308 PM MDT TUE OCT 14 2025
DISCUSSION
KEY MESSAGES:
1) THE NEXT ROUND OF SIGNIFICANT RAINFALL IS SET TO MOVE IN ON
WEDNESDAY, CONTINUING AT TIMES THROUGH AT LEAST EARLY FRIDAY.
2 UPPER RIDGING MAY LEAD TO A BRIEF WARM UP IN TEMPERATURES OVER
THE UPCOMING WEEKEND.
WEATHER PATTERN OVERVIEW:
A DEEP WESTERN U.S. TROUGH AND CLOSED LOW CENTERED OVER CALIFORNIA
WILL SHIFT NORTHEASTWARD OVER THE NEXT COUPLE OF DAYS WITH
SOUTHWEST FLOW ALOFT OVER EASTERN MONTANA. THIS SYSTEM WILL LEAD
TO PLENTY OF RAINFALL FOR THE SECOND HALF OF THE WEEK, WITH MUCH
OF THE REGION EXPECTING IN EXCESS OF A HALF INCH BETWEEN WEDNESDAY
AND FRIDAY.
THE LOW WILL BECOME VERTICALLY STACKED AND SHIFT NORTHEASTWARD
OVER THE WEEKEND AS AN UPPER RIDGE BECOMES ESTABLISHED OVER THE
PACIFIC NORTHWEST. LOOK FOR DRIER AND WARMER CONDITIONS AS A
RESULT.
FORECAST CONFIDENCE & DEVIATIONS:
NBM WAS LARGELY FOLLOWED THIS CYCLE WITH LITTLE DEVIATION. HIGH
CONFIDENCE EXISTS WITH EXCELLENT MODEL AGREEMENT ON COOL AND WET
WEATHER FOR THE SECOND HALF OF THIS WEEK, WITH DRIER AND WARMER
WEATHER SET FOR THE WEEKEND.
AVIATION
LAST UPDATE: TUESDAY OCTOBER 14 AT 2100Z
FLIGHT CAT RANGE: MVFR - VFR
DISCUSSION: A RANGE IN MVFR TO VFR CEILINGS ARE EXPECTED AT TIMES
TONIGHT AND WEDNESDAY AS THE NEXT SYSTEM APPROACHES WITH A NEW
ROUND OF STEADY RAINFALL. PATCHY FOG IS ALSO POSSIBLE AS WELL.
WIND: E AT 10 TO 20 KTS THIS EVENING THROUGH TONIGHT, LIKELY
PERSISTING ON WEDNESDAY.
GGW WATCHES/WARNINGS/ADVISORIES
NONE.
WEATHER.GOV/GLASGOW
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