Ice Storm, Fergus
- When
- December 20, 9:00 PM MST to December 21, 11:00 AM MST
- Where
- Fergus forecast zone
- Reported by
- Public
An ice storm produced ice accumulations of one-quarter inch at Lewistown and at Grass Range.
Ice Storm in Montana, December 20 to 21, 2009
Freezing rain developed over portions of North Central Montana. Ice accumulations of one-quarter inch were reported.
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 6
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.
What happened
The episode as NWS TFX wrote it up.
Freezing rain developed over portions of North Central Montana. Ice accumulations of one-quarter inch were reported.
Event by event
6 ice storm. Local standard time, as filed.
Ice Storm, Judith Basin
- When
- December 20, 9:00 PM MST to December 21, 11:00 AM MST
- Where
- Judith Basin forecast zone
- Reported by
- Law Enforcement
Law Enforcement officials report about .25 of inch of ice on roadways at Geyser.
Ice Storm, Eastern Pondera
- When
- December 21, 12:03 AM MST to 11:00 AM MST
- Where
- Eastern Pondera forecast zone
- Reported by
- Law Enforcement
An ice storm produced ice accumulations of one-quarter inch at Conrad 12W.
Ice Storm, Chouteau
- When
- December 21, 12:03 AM MST to 11:00 AM MST
- Where
- Chouteau forecast zone
- Reported by
- Law Enforcement
An ice storm produced ice accumulations of one-quarter inch at Fort Benton.
Ice Storm, Eastern Teton
- When
- December 21, 12:03 AM MST to 11:00 AM MST
- Where
- Eastern Teton forecast zone
- Reported by
- Emergency Manager
An ice storm produced ice accumulations of one-quarter inch at Fairfield.
Ice Storm, Cascade
- When
- December 21, 12:03 AM MST to 11:00 AM MST
- Where
- Cascade forecast zone
- Reported by
- NWS Employee
Ice accumulations of one-quarter of an inch were reported across the county. The Great Falls International Airport was shut down for several hours due to ice on the runway.
What these are
- Ice Storm
- Freezing rain accumulating a quarter inch or more of ice, or less where it caused significant damage.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
More
Every storm in Montana in 2009Every state in 2009This day in weather historyWarnings in Montana, December 2009
Sources
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 2026-09-30. Each event’s entry at NCEI: 205572, 208348, 205569, 205570, 205571, 207980.