Montana, 2007

Heavy Snow in Montana, December 19 to 20, 2007

December 19 to 20, 2007 · NWS TFX · 2 events in 2 counties and zones

A Pacific storm system brought heavy snow to the Rocky Mountain Front. Snow amounts in excess of 8 inches were common.

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
2

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.

A Pacific storm system brought heavy snow to the Rocky Mountain Front. Snow amounts in excess of 8 inches were common.

What forecasters said that day

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 Dec 19, 4:42 PM MST, 3 hours 18 minutes earlier.

Area forecast discussion, Dec 19, 4:42 PM MST, 3 hours 18 minutes before
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Hazardous weather outlook, Dec 19, 4:46 PM MST, 3 hours 14 minutes before
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Event by event

2 heavy snow. Local standard time, as filed.

Heavy Snow, Southern Rocky Mountain Front

When
December 19, 8:00 PM MST to December 20, 9:00 AM MST
Where
Southern Rocky Mountain Front forecast zone
Reported by
Mesonet

Ten inches of snow fell at the Mount Lockhart SNOTEL site (elevation 6400 feet).

Heavy Snow, North Rocky Mountain Front

When
December 19, 10:00 PM MST to December 20, 10:00 AM MST
Where
North Rocky Mountain Front forecast zone
Reported by
Mesonet

Eight inches of snow fell at the Many Glacier SNOTEL site (elevation 4900 feet).

What these are

Heavy Snow
Snowfall reaching the local warning threshold without the other hazards of a winter storm.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Montana in 2007Every state in 2007This day in weather historyWarnings in Montana, December 2007

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: 66810, 66809.