280
FXUS65 KGGW 060419
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
1019 PM MDT TUE MAY 5 2026
KEY MESSAGES
- LOOK FOR COLD TEMPERATURES WEDNESDAY MORNING WITH WIDESPREAD
LOWS IN THE 20S.
- TEMPERATURES LOOK TO RECOVER WEDNESDAY AFTERNOON INTO THURSDAY,
WITH A WARMING TREND CONTINUING THROUGH AT LEAST FRIDAY.
- THE NEXT CHANCE FOR ISOLATED SHOWERS AND PERHAPS A LONE
THUNDERSTORM LOOKS TO BE ON THURSDAY AFTERNOON.
DISCUSSION
WEATHER PATTERN OVERVIEW:
FOLLOWING A CHILLY START TO THE DAY WITH LOWS IN THE 20S,
TEMPERATURES WILL RESPOND BY WEDNESDAY AFTERNOON WITH HIGHS
REBOUNDING TO THE 50S FOR MOST OF NE MONTANA.
UPPER RIDGING OVER THE WESTERN U.S. WILL GUIDE NORTHWEST FLOW
ALOFT OVER THE REGION FOR THURSDAY WITH WARMER TEMPERATURES BUT
AFTERNOON ISOLATED SHOWERS AND A LONE THUNDERSTORM COME INTO FOCUS
WITH AN EMBEDDED SHORTWAVE. FRIDAY LOOKS TO BE THE WARMEST DAY
WITH TEMPERATURES INTO THE 70S ACROSS THE AREA. SHORTWAVES WILL
CONTINUE TRACKING SOUTHEAST, KEEPING SHOWER CHANCES IN THE
FORECAST THROUGH THE WEEKEND WITH A CONTINUATION OF WARM
TEMPERATURES UNDER THAT RIDGE.
OVERALL, PRECIPITATION AMOUNTS WILL BE LIGHT AND FAIRLY HIT OR
MISS, BUT WETTING RAIN ARE REFLECTED IN THE NBM MEAN GUIDANCE
ASSOCIATED WITH SOME OF THE STEADIER SHOWERS.
FORECAST CONFIDENCE & DEVIATIONS:
NBM CAPTURED OVERALL TRENDS REASONABLY WELL, THOUGH CONFIDENCE IS
BELOW AVERAGE ON PRECIPITATION AMOUNTS AND PLACEMENT THROUGH THE
PERIOD GIVEN THE HIT OR MISS NATURE OF CONVECTION, ESPECIALLY AT
LATER TIME PERIODS. AS HREF GUIDANCE AND OTHER SHORT TERM HIGHER
RESOLUTION DATA BECOME AVAILABLE, TRENDS SHOULD BECOME MORE CLEAR.
AVIATION
LAST UPDATED: WEDNESDAY MAY 6, 2026 AT 0415Z
FLIGHT CAT RANGE: VFR.
DISCUSSION: MAINLY CLEAR SKIES ARE EXPECTED OVERNIGHT WITH PARTLY
CLOUDY SKIES ON WEDNESDAY.
WIND: LIGHT AND VARIABLE WINDS WILL BECOME WEST ON WEDNESDAY AT 5
TO 8 KTS.
GGW WATCHES/WARNINGS/ADVISORIES
NONE.
WEATHER.GOV/GLASGOW
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