017 

FXUS65 KGGW 290533

AFDGGW



Area Forecast Discussion

National Weather Service Glasgow MT

1133 PM MDT Sun Jun 28 2026



.KEY MESSAGES...

- Upper level low will bring showers and thunderstorms this

  afternoon and evening.



- Upper trough lingers most of this week with chances for showers

  and thunderstorms at times. 



- Temperatures will gradually warm to near normal this week. 









&&



.DISCUSSION...

WEATHER PATTERN OVERVIEW:



The vertically stacked low over southern Alberta, SW Saskatchewan 

and northern Montana will remain rotate through eastern Montana

today and tonight and move to Manitoba on Tuesday. A dry slot over

eastern Montana early this morning is expected to fill in with 

convection during the day today as the upper low moves into the 

area and diminish tonight as the low moves to the northeast. As

the low exits the forecast area tonight, gusty west winds will

develop with a Lake Wind Advisory likely for Fort Peck Lake on

Tuesday. There will be chances for more showers and thunderstorms

as shortwaves move through NE Montana around the upper low to the

NE. 



A broad upper trough will remain in place over western Canada and

western US for the remainder of the week that will continue to

bring chances for showers and thunderstorms every day.

Temperatures will gradually warm through Friday. 



FORECAST CONFIDENCE & DEVIATIONS:

Low confidence on timing any showers and thunderstorms over the

next few days. High confidence on the warmer temperatures as the

week progress. No deviations from the NBM at this time. 



&&



.AVIATION...

UPDATED: 0530z Monday June 29th



FLIGHT CATEGORY: VFR most of the time. Areas of MVFR this

afternoon and evening.



DISCUSSION: Skies will be either clear or with SCT-BKN mid clouds

this morning. Cumulus will develop during the day today and areas

of showers and thunderstorms are expected this afternoon and

evening with MVFR conditions possible at times. 



WINDS: South to SE 5 to 10 knots this morning becoming south to SW

this afternoon 5 to 15 knots and turning west to SW this evening.







&&



.GGW WATCHES/WARNINGS/ADVISORIES...

None.

&&



$$



weather.gov/glasgow