905
FXUS65 KGGW 161947
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
147 PM MDT TUE JUN 16 2026
KEY MESSAGES
- SHOWERS AND THUNDERSTORMS THIS EVENING WITH LOCALIZED STRONG
WINDS, HAIL, AND DOWNPOURS. STRONGEST STORMS ARE EXPECTED
BETWEEN 5 AND 9 PM.
- MUCH COOLER, WETTER, AND WIDESPREAD WINDY CONDITIONS TO FOLLOW
OVERNIGHT INTO WEDNESDAY, WITH LAKE WIND ADVISORY CONDITIONS.
- NEAR AVERAGE TEMPERATURES AND UNSETTLED WEATHER RETURN LATE IN THE
WEEK.
DISCUSSION
WEATHER PATTERN OVERVIEW:
A COLD FRONT WILL BRING SHOWERS AND THUNDERSTORMS BEGINNING LATE
THIS AFTERNOON THROUGH 10 PM. WITH MODEST CAPE VALUES ~500 J/KG,
BUT EBWD NEAR 35 KTS, WILL BE SUPPORTIVE OF LOCALIZED STRONG WIND
GUSTS AND HAIL. LOCALIZED STORM TACKS WITH UH OF ~100 M2/S2, MODERATELY
STEEP 700-500 MB LAPSE RATES NEAR OR ABOVE 7 C/KM, AND SOMEWHAT
MOIST MID LEVELS, SEEING 1" HAIL IN THE STRONGER STORMS WILL BE
LIKELY. WITH THE JET STREAM OVERHEAD OF THESE STORMS, IT WON'T
TAKE MUCH TO GET A GUST TO 60 MPH ON THE GROUND.
LAKE WIND ADVISORY WINDS LAST OVERNIGHT INTO WEDNESDAY.
ADDITIONAL STORMS ARE EXPECTED ON WEDNESDAY WITH ANOTHER BUT
WEAKER SHORTWAVE.
FORECAST CONFIDENCE & DEVIATIONS:
INCREASED POPS FOLLOWING CAMS AND TO BETTER MATCH WITH NEIGHBORS.
INCREASED WINDS AND WIND GUSTS BASED ON HREF ENSEMBLE MAX WINDS
AVIATION
UPDATED: 1845Z
FLIGHT CAT RANGE: VFR, MVFR WITH THE STRONGER STORMS
DISCUSSION: SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP
THROUGH THE EVENING, LINGERING OVERNIGHT THROUGH THE END OF THE
TAF PERIOD. STRONGER, ISOLATED STORMS WILL IMPACT TAF SITES
BETWEEN 0 AND 4Z TONIGHT.
WINDS: NW AT 10 TO 15 KTS THROUGH 9Z, INCREASING TO 20 TO 25 KTS.
WIND GUSTS OF 35 TO 40 KTS ARE LIKELY, GUSTING UP TO 50 KTS IN
STRONG STORMS.
GGW WATCHES/WARNINGS/ADVISORIES
LAKE WIND ADVISORY UNTIL 8 PM MDT WEDNESDAY FOR CENTRAL AND
SOUTHEAST PHILLIPS-CENTRAL AND SOUTHERN VALLEY-GARFIELD-MCCONE-
PETROLEUM.
WEATHER.GOV/GLASGOW
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page