639
FXUS65 KGGW 281921
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
121 PM MDT SAT MAR 28 2026
KEY MESSAGES
- DRY CONDITIONS WILL PREVAIL THROUGH SUNDAY AFTERNOON.
- ACCUMULATING RAIN IS EXPECTED SUNDAY NIGHT AND MONDAY.
- SEE-SAW TEMPERATURES CONTINUE THROUGH NEXT WEEK WITH ANOTHER
CHANCE OF PRECIPITATION LATER IN THE WEEK.
DISCUSSION
WEATHER PATTERN OVERVIEW:
RAPID ZONAL FLOW IS IN PLACE OVER THE AREA WITH COLDER, BRINGING
MAINLY CLOUDY SKIES TO THE AREA.
A DISTURBANCE OFF THE BRITISH COLUMBIA COAST WILL HELP GENERATE
RAINSHOWERS OVER THE PACIFIC NW SUNDAY THAT WILL MOVE EAST INTO
THE AREA SUNDAY NIGHT.
CURRENTLY, MODELS ARE FALLING INTO FAIRLY GOOD AGREEMENT WITH
AROUND 0.10 TO 0.15 RAIN ACCUMULATION NEAR AND NORTH OF THE HI-
LINE LATE SUNDAY THROUGH LATE MONDAY. MONDAY NIGHT SOME OF OUR NE
ZONE LOCATIONS COULD SEE THAT RAIN CHANGE OVER TO SNOW WITH A LITTLE
ACCUMULATION.
TUESDAY THROUGH WEDNESDAY NIGHT, THE COLDER AIR MASS WILL ADVANCE
SOUTHWARD ENOUGH TO GIVE OUR REGION ANOTHER HARD FREEZE.
LATER NEXT WEEK, TEMPERATURES SHOULD REBOUND BUT A DEEPER UPPER
TROUGH LOOKS TO MOVE IN BY THE WEEKEND.
FORECAST CONFIDENCE & DEVIATIONS:
SLIGHT DEVIATION TO MAX TEMPS WERE MADE TO WEDNESDAY AND THURSDAY,
CLOSER TO NBM50.
CONFIDENCE IS HIGH REGARDING NO PRECIPITATION NOW THROUGH SUNDAY
AFTERNOON.
CONFIDENCE IS MODERATE WITH THE RAINFALL SUNDAY NIGHT INTO MONDAY.
TFJ
AVIATION
LAST UPDATE: 1920Z
FLIGHT CATEGORY: VFR
DISCUSSION: CLOUDS WILL CONTINUE TO LOWER TONIGHT TO AROUND 8K FT
AGL WITH SOME CLEARING EXPECTED SUNDAY BEFORE LOWER CLOUDS AND
RAINSHOWERS MOVE IN FOR SUNDAY NIGHT.
WIND: LIGHT AND VARIABLE TONIGHT, LIGHT NW SUNDAY. TFJ
GGW WATCHES/WARNINGS/ADVISORIES
NONE.
WEATHER.GOV/GLASGOW
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