An upper level low moving over northcentral Montana and a surface low over northeast Wyoming interacted to bring heavy snow to portions of central and southwest Montana. Snowfall amounts ranged from 6 to 12 inches.
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.
An upper level low moving over northcentral Montana and a surface low over northeast Wyoming interacted to bring heavy snow to portions of central and southwest Montana. Snowfall amounts ranged from 6 to 12 inches.
4 heavy snow. Local standard time, as filed.
Reported snow amounts include: 12 inches near the Bozeman hospital, 12 inches at Bozeman 5SE and 6 inches at Gallatin Gateway 4N.
Reported snow amounts include 8 inches at the Great Falls NWS office.
Reported snow amounts include 8 inches at Rocky Boy.
Reported snow amounts include 9 inches at Carter 27NW.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2006Every state in 2006This day in weather historyWarnings in Montana, December 2006
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: 6681, 6678, 6679, 6680.