A series of waves flattening an upper level ridge resulted in a strong mid level flow across the region. Additionally, a strengthening surface pressure gradient developed, helping to contribute to a period of strong winds along the Northern Rocky Mountain Front and adjacent plains Jan 29 into 30.
Every event with a place to put it; 2 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 TFX wrote it up.
A series of waves flattening an upper level ridge resulted in a strong mid level flow across the region. Additionally, a strengthening surface pressure gradient developed, helping to contribute to a period of strong winds along the Northern Rocky Mountain Front and adjacent plains Jan 29 into 30.
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 Great Falls, MT wrote its last area forecast discussion before the first event at Jan 28, 4:48 PM MST, 10 hours 42 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
2 high wind. Local standard time, as filed.
Montana mesonet sensor Dog Gun Lake E (Acedoggu) measured sustained winds, averaged over an hour, of 51 mph. Additional sensors measured gusts of criteria as well.
Montana mesonet station Mission Lake S (Acemissi) measured sustained winds, averaged over an hour, of 41 mph.
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, January 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 2026-09-30. Each event’s entry at NCEI: 1240227, 1240229.