A vigorous upper level trough of low pressure moved south out of British Columbia and into the northern Rockies, producing heavy mountain snow. Light to moderate snow accumulations occurred in some valley locations.
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 MSO wrote it up.
A vigorous upper level trough of low pressure moved south out of British Columbia and into the northern Rockies, producing heavy mountain snow. Light to moderate snow accumulations occurred in some valley locations.
The national radar mosaic for the moment the first event began.
1 heavy snow. Local standard time, as filed.
A trained spotter in Elk City measured twenty four inches of new snow from the event. A trained spotter in Dixie measured eight inches of new snow.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2009Every state in 2009This day in weather historyWarnings in Idaho, March 2009
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: 161681.