A cold front and lingering northwesterly upslope flow behind the front resulted in a stretch of heavy snow in the Madison/Gallatin Ranges and vicinity April 16. Heavy snow within the Gallatin Valley had greater success sticking on non-paved surfaces, but did accumulate on roadways to a lesser extent.
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 cold front and lingering northwesterly upslope flow behind the front resulted in a stretch of heavy snow in the Madison/Gallatin Ranges and vicinity April 16. Heavy snow within the Gallatin Valley had greater success sticking on non-paved surfaces, but did accumulate on roadways to a lesser extent.
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 Apr 15, 4:51 PM MST, 2 hours 9 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
2 heavy snow. Local standard time, as filed.
Several snotels estimated new snowfall in excess of 9 inches, including a peak report of 15 inches at Albro Lake.
Several trained spotters reported storm total snow in excess of 6 inches, including a peal report of 8.5 inches a few miles south of Bozeman.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2026Every state in 2026This day in weather historyWarnings in Montana, April 2026
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 2026-10-01. Each event’s entry at NCEI: 1332833, 1332832.