A broad plume of Pacific moisture overran an arctic airmass in place over North-Central Montana. Sigificant snow fall resulted with amounts up to 18 inches being reported.
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 broad plume of Pacific moisture overran an arctic airmass in place over North-Central Montana. Sigificant snow fall resulted with amounts up to 18 inches being reported.
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 22, 5:38 AM MST, 22 minutes earlier.
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</html>5 winter storm. Local standard time, as filed.
Wind gusts of 40 to 52 mph were reported for over 4 hours at Monida. Interstate 15 southbound was closed due to falling snow and poor visibilities.
Wind gusts between 40 and 50 mph over 3 hours were reported at Cameron 34SSE. A peak wind gust of 65 mph wes reported. Falling snow resulted in near whiteout conditions.
Nine inches of snow fell at Whitehall 2W.
Eighteen inches of snow fell at Buffalo 15WSW.
Eight inches of snow fell at West Yellowstone.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2010Every state in 2010This day in weather historyWarnings in Montana, November 2010
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: 264781, 264788, 264789, 264790, 264791.