textproduct: Glasgow

KEY MESSAGES

- Warm and mainly conditions are expected the next few days, peaking on Wednesday. - A Fire Weather Watch is in effect for Wednesday area wide, and another fire product is likely needed for Thursday. A Lake Wind Advisory will be needed for Wednesday and Thursday. A High Wind Watch is in effect for the whole area, mainly from Wednesday evening through Thursday evening. - There is moderate uncertainty on when the next low pressure system will move through beyond Thursday.

DISCUSSION

WEATHER PATTERN OVERVIEW: An upper ridge is expected to move in today according to the latest GFS ensemble. The peak of this ridge is going to occur on Wednesday and will be the warmest day of 2026 so far for most locations. Some locations will likely have highs in the 90s with increased dry southerly flow, which will contribute to the critical fire weather conditions. A trough moves through Wednesday night and keeps winds elevated through at least Friday, with potential gusts between 50 and 60 expected, and few isolated gusts higher than that. Although cooler temperatures will occur on Thursday, a fire weather product will likely be issued as the event draws closer.

A more zonal flow pattern develops thereafter to moderate temperatures some and bring smaller synoptic ridge/trough couplets embedded in it. This will bring chances for showers and thunderstorms at times across the region through the weekend with possible wetting rains or even a marginal severe potential depending on whether it matches up with peak heating. Individual ensemble members continue to disagree on what day/time any given ridge/trough couplet moves through though.

FORECAST CONFIDENCE & DEVIATIONS: No deviations were made.

There is high confidence in temperatures through Thursday and a Lake Wind Advisory being needed on Wednesday and Thursday. There is moderate to high confidence on fire weather conditions Wednesday and Thursday, as well as for high winds occurring on Thursday. There is moderate confidence in scattered showers and thunderstorms moving through on Wednesday and Thursday.

AVIATION

LAST UPDATED: 0700Z

FLIGHT CAT RANGE: VFR

DISCUSSION: Dry conditions and partly cloudy conditions are expected through tonight as an upper ridge moves in.

WIND: Northwest at 6 to 16 knots becoming light and variable after 00Z Wednesday.

EQUIPMENT: No obs from KSDY. TAF will be AMD NOT SKED until obs return.

GGW WATCHES/WARNINGS/ADVISORIES

Fire Weather Watch from Wednesday morning through Wednesday evening for Dawson/McCone/Prairie/Richland/Wibaux Counties-Fort Peck Reservation and Daniels/Roosevelt/Sheridan Counties- Northern Valley and Northern Phillips Counties-Southern Petroleum and Southern Garfield Counties-The Little Rockies-The Lower Missouri River Breaks including the Charles M Russell National Wildlife Refuge.

High Wind Watch from Thursday morning through Thursday evening for Central and Southeast Phillips-Central and Southern Valley- Daniels-Dawson-Eastern Roosevelt-Garfield-McCone-Northern Phillips-Northern Valley-Petroleum-Prairie-Richland-Sheridan- Western Roosevelt-Wibaux.

High Wind Watch from Wednesday evening through Thursday evening for Southwest Phillips.