The drought continued over portions of northeast Montana during the month of May.
Every event with a place to put it; 9 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS GGW wrote it up.
The drought continued over portions of northeast Montana during the month of May.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Glasgow, MT wrote its last area forecast discussion before the first event at Apr 30, 6:30 PM MST, 5 hours 30 minutes earlier.
Area Forecast Discussion National Weather Service Glasgow MT 730 PM MDT Wed Apr 30 2025 .DISCUSSION... KEY MESSAGES: 1) Expect lingering isolated rain showers through Thursday. 2) Warmer temperatures are expected this weekend which may increase fire weather concerns. 3) A change to wetter and cooler conditions is possible early to middle portions of next week. WEATHER PATTERN OVERVIEW: Isolated rain shower regime looks to continue into Thursday. Late Thursday, winds do look to shift north and increase to a range of 5 to 15 kts with occasional higher gusts to 25 kts. This looks to be shy of Lake Wind criteria for Fort Peck Lake at the moment, but it is close and will need to be monitored. Expect upper level ridging to give rise to drier and hotter weather conditions heading into the second half of this week, particularly over the weekend. Given the dry spell in place, will need to monitor for increased fire weather concerns. Ensembles depict the ridging shifting east early to mid next week with cooler temperatures and increasing rain chances. FORECAST CONFIDENCE & DEVIATIONS: Given spotty coverage, low confidence exists on rain chances into Thursday. High confidence exists on warmer weather with the broad upper level ridge pattern setting up through this weekend. NBM handled this forecast well, but future shifts should consider whether a blend of HREF or NBM90 may tilt the breezy conditions on Thursday into Lake Wind territory, or if it remains just shy. && .AVIATION... LAST UPDATED: 0130Z FLIGHT CAT RANGE: VFR. DISCUSSION: Mid and high clouds will prevail with isolated showers, though do not expect significant reductions in ceiling height or visibility tonight into Thursday unless under a steadier remote shower. WIND: Light and variable overnight. Shifting north to northwest at 5 to 15 kts on Thursday. Then, light and variable Thursday evening. /GAH && .GGW WATCHES/WARNINGS/ADVISORIES... None. && weather.gov/glasgow
The national radar mosaic for the moment the first event began.
9 drought. Local standard time, as filed.
The drought worsened to a D2 over a portion of east-central Phillips county.
The drought worsened to D2 over northern third of central and southeast Valley county.
The drought worsened to D2 over a small corner of southwest Daniels county.
The drought worsened to D2 over much of McCone county, except the extreme northeast portions.
D2 drought remained over the southeast one quarter of Richland county.
The D2 drought increased a bit over all but northern Dawson county.
The D2 drought continued over all of Wibaux county.
The D2 drought expanded to over most of Prairie county.
D2 drought developed over the far western edge of Roosevelt county.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2025Every state in 2025This day in weather historyWarnings in Montana, May 2025
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1249547, 1249551, 1249552, 1249554, 1249556, 1249558, 1249559, 1249561, 1249562.