639
FXUS65 KGGW 080629
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
1229 AM MDT THU OCT 8 2026
KEY MESSAGES
- WARM AND DRY CONDITIONS MAY ELEVATE FIRE WEATHER CONCERNS ON
FRIDAY.
- MARKEDLY COLDER TEMPERATURES WILL FOLLOW THIS WEEKEND WITH
CHANCES FOR RAIN AND SNOW. MINOR SNOW ACCUMULATION IS EXPECTED
(MOSTLY LESS THAN ONE INCH, ESPECIALLY ON ELEVATED SURFACES).
DISCUSSION
LATEST UPDATE: 0615Z
THE UPPER RIDGE WILL BE ABOUT THE SAME STRENGTH TOMORROW, AND THEN
INCREASE IN INTENSITY ON FRIDAY BEFORE A TROUGH MOVES IN FOR
SATURDAY. THERE IS POTENTIAL FOR SCATTERED FIRE WEATHER
CONDITIONS ON FRIDAY SINCE WELL ABOVE AVERAGE TEMPERATURES WILL
OCCUR.
MOSTLY DRY CONDITIONS ON SATURDAY MORNING ARE EXPECTED TO BE
REPLACED BY RAIN SHOWERS AS A COLD FRONT MOVES THROUGH. A TENTH
TO A QUARTER INCH OF ACCUMULATION IS EXPECTED SOUTH OF THE
MISSOURI RIVER, AND MAINLY LESS THAN A QUARTER INCH NORTH OF THE
RIVER THROUGH MONDAY EVENING. THE LITTLE ROCKIES HAS UP TO AN INCH
OF SNOW POSSIBLE ON GRASS AND TREE LIMBS THROUGH MONDAY EVENING.
OTHER LOCATIONS HAVE MOSTLY A TRACE EXPECTED IN THAT TIME (LESS
THAN ONE INCH). A DECENT DUSTING MAY BE A GREAT OPPORTUNITY FOR
PICTURES, ESPECIALLY ON MONDAY AFTERNOON IN THE WEST IF CLOUDS
CLEAR OUT A BIT.
ALTHOUGH THERE IS SOME UNCERTAINTY BEYOND MONDAY, WEAK TROUGHING
APPEARS AS THOUGH IT WILL REMAIN IN PLACE TO BRING CHANCES FOR
PRECIPITATION AGAIN IN THE MIDDLE OF THE WEEK. THIS IS ACCORDING
TO THE GFS ENSEMBLE ANYWAY.
FORECAST CONFIDENCE & DEVIATIONS:
INCREASED WINDS ON DAY 1 AND 2 IN THE AFTERNOONS AND DECREASED
RELATIVE HUMIDITY ON FRIDAY AFTERNOON.
THERE IS MODERATE CONFIDENCE ON BOTH WINDS BEING WITHIN +/- 8
KNOTS OF THE FORECAST, AND PRECIPITATION AMOUNTS THROUGH MONDAY.
AVIATION
LAST UPDATED: 0615Z
FLIGHT CAT RANGE: VFR
DISCUSSION: MID-TO-HIGH LEVEL CLOUDS AND QUIET WEATHER IS
EXPECTED.
WINDS: FOR KGGW, SOUTHEAST AT 8 TO 12 KNOTS BECOMING LIGHT AND
VARIABLE AFTER 15Z, BECOMING NORTHWEST AT 7 TO 12 KNOTS AFTER 18Z,
SWITCHING BACK TO SOUTHEAST AFTER 03Z. FOR ALL OTHER SITES, LIGHT
AND VARIABLE BECOMING SOUTH AT 7 TO 11 KNOTS AFTER 16Z, BECOMING
SOUTHWEST AFTER 20Z, BECOMING NORTHWEST AFTER 22Z, BECOMING LIGHT
AND VARIABLE AFTER 01Z.
GGW WATCHES/WARNINGS/ADVISORIES
NONE.
WEATHER.GOV/GLASGOW
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