A strong storm system within a northwest flow aloft brought very cold temperatures along with moderate to heavy snowfall to portions of the Billings Forecast Area. Strong winds produced widespread blowing and drifting snow.
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 BYZ wrote it up.
A strong storm system within a northwest flow aloft brought very cold temperatures along with moderate to heavy snowfall to portions of the Billings Forecast Area. Strong winds produced widespread blowing and drifting snow. The combination of blowing and drifting snow made travel very difficult in some locations.
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 Billings, MT wrote its last area forecast discussion before the first event at Nov 30, 9:42 AM MST, 4 hours 18 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
2 winter storm. Local standard time, as filed.
Light snow with winds sustained from 40 to 50 mph from about 4pm to 7pm occurred in the Judith Gap area. Several gusts of 60 mph or higher were reported, with a peak gust of 68 mph. Visibilities were less than a mile during the peak of high winds.
Red Lodge received 6 inches of snow. Visibilities were greatly reduced due to blowing snow.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2011Every state in 2011This day in weather historyWarnings in Montana, November 2011
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: 351591, 351592.