Gusty winds developed overnight as an upper level system approached the area, which brought areas of snow and wind to the region ahead of Thanksgiving.
Every event with a place to put it; 5 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.
Gusty winds developed overnight as an upper level system approached the area, which brought areas of snow and wind to the region ahead of Thanksgiving.
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 Nov 21, 10:30 AM MST, 2 hours 51 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
3 winter weather, 2 high wind. Local standard time, as filed.
Mesonet station DCRM8 Deep Creek RAWS measured a 67 mph wind gust.
Ambient weather station near 19 WNW Santa Rita measured 58 mph wind gust.
Cocorahs station MT-GR-6 Cut Bank 0.3 N measured 1.4 inches of snowfall. Time estimated.
CO-OP Observer station SNRM8 Sun River 4S measured 1 inch of snowfall. Time estimated.
MT Highway Patrol notified the NWS of a fatal vehicle crash on Interstate 15 near Brady. MHP stated the vehicle crash was caused by slick roadways from snow and ice. NWS employee reported encountering freezing drizzle on I-15 when passing through same area, shortly after the incident. 1 Fatality, 2 injuries.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Winter Weather, Eastern Pondera and Eastern Teton | 2023-11-23 | Vehicle/Towed Trailer | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2023Every state in 2023This day in weather historyWarnings in Montana, November 2023
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: 1143742, 1143743, 1143744, 1143745, 1143746.