205
FXUS65 KGGW 051911
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
111 PM MDT TUE MAY 5 2026
KEY MESSAGES
- A HARD FREEZE IS EXPECTED TONIGHT.
- A WARM UP BEGINS WEDNESDAY WITH TEMPS ABOVE NORMAL THURSDAY
THROUGH THE WEEKEND.
- DISTURBANCES WILL BRING SCATTERED RAIN SHOWERS THURSDAY THEN
MORE SIGNIFICANT RAIN SHOWERS FRIDAY NIGHT INTO SATURDAY.
- MORE UNSETTLED CONDITIONS WITH LIGHT RAIN SHOWERS CAN BE
EXPECTED EARLY NEXT WEEK.
DISCUSSION
WEATHER PATTERN OVERVIEW:
ANONYMOUSLY STRONG UPPER LOW OVER SOUTH-CENTRAL CANADA WILL SLWLY
DRIFT AWAY FROM MONTANA THIS WEEK AS AN UPPER RIDGE OVER THE
BRITISH COLUMBIA COAST BROADENS EAST INTO THE TREASURE STATE. THIS
WILL ALLOW TEMPS TO REACH NORMAL LEVELS.
IN THE MEANTIME, SURFACE HIGH PRESSURE OVER NW CANADA WILL EXPAND
INTO MONTANA AND THE CENTRAL ROCKIES/NORTHERN PLAINS BY WEDNESDAY
MORNING. WITH CLEAR SKIES AND LIGHT WINDS, TEMPS SHOULD DROP
EASILY INTO THE 20S ACROSS THE CWA. SOME OF THE COLDER SPOTS WILL
FALL INTO THE TEENS.
RECOVERY BEGINS WEDNESDAY AS SUNSHINE AND A GENTLE WEST WIND WARM
THINGS INTO THE 50S TO LOW 60S.
WARMING CONTINUES INTO THURSDAY BUT NW FLOW WILL BRING WEAKENED
PACIFIC DISTURBANCES IN. NOT MUCH QPF IS EXPECTED UNTIL FRIDAY
NIGHT AND SATURDAY, WHERE MORE THAN A TENTH OF AN INCH IS
POSSIBLE, MAINLY SW OF A MALTA TO MILES CITY LINE. THIS AMOUNT AND
AREA WILL LIKELY FLUCTUATE, SO STAY TUNED WITH MODEL UPDATES.
AFTER A BRIEF COOLDOWN FOR SATURDAY, TEMPS LOOK TO REBOUND A BIT
INTO EARLY NEXT WEEK, WHEN TEMPS CAN GET ABOVE NORMAL LEVELS.
FORECAST CONFIDENCE & DEVIATIONS:
DEVIATION: WENT BELOW NBM FOR TONIGHT GIVEN THE RADIATIONAL
COOLING EXPECTED. NO OTHER DEVIATIONS WERE MADE. TFJ
AVIATION
LAST UPDATED: 1900Z
FLIGHT CAT RANGE: VFR
DISCUSSION: VFR CLOUDS WILL GRADUALLY DECREASE THIS EVENING WHILE
WINDS ALSO DECREASE. EXPECT MAINLY CLEAR BUT COLD CONDITIONS
WEDNESDAY MORNING.
WIND: WINDS WILL BECOME LIGHT AND VARIABLE THIS EVENING THEN WEST
AT 10-15 KTS WEDNESDAY AFTERNOON. TFJ
GGW WATCHES/WARNINGS/ADVISORIES
NONE.
WEATHER.GOV/GLASGOW
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