With a tight pressure gradient and severe winds aloft, a small disturbance over the region was able to pull those stronger winds all the way down to the surface in southwest Phillips County.
Every event with a place to put it; 1 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.
With a tight pressure gradient and severe winds aloft, a small disturbance over the region was able to pull those stronger winds all the way down to the surface in southwest Phillips County.
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 Oct 16, 4:45 AM MST, 41 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
A 58 mph wind gust was measured at the Malta South DOT site, located on US 191 at milepost 122.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2017Every state in 2017This day in weather historyWarnings in Montana, October 2017
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: 722972.