1 high wind, as filed by the National Weather Service.
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.
1 high wind. Local standard time, as filed.
The combination of a strong high pressure area over the great basin, an upper low which tracked east across Southern Canada and a fast westerly flow aloft produced southwest winds sustained as high as 58 mph with gusts as high as 73 mph across the Upper Yellowstone Valley.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 1999Every state in 1999This day in weather historyWarnings in Montana, January 1999
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: 5678679.