Pennsylvania, 2010Heavy Snow and Lake-Effect Snow in Pennsylvania, December 5 to 7, 2010
December 5 to 7, 2010 · NWS CTP · 4 events in 4 counties and zones
A cold and persistent northwest flow across the Eastern Great Lakes resulted in a prolonged period of heavy snow and significant accumulations in the Northwest Mountains and Laurel Highlands.
Every event with a place to put it; 4 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 4
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.
A cold and persistent northwest flow across the Eastern Great Lakes resulted in a prolonged period of heavy snow and significant accumulations in the Northwest Mountains and Laurel Highlands.
Lake-Effect Snow, Warren
- When
- December 5, 7:00 AM EST to December 7, 7:00 PM EST
- Where
- Warren forecast zone
- Reported by
- Emergency Manager
- Coordinates
- 41.815, -79.274 (the zone’s center; the record gives no point)
A prolonged period of lake-effect snow produced significant accumulations over the Northwest Mountains from the 5th through the 7th. Snowfall amounts in excess of 6 inches were observed by the evening of the 5th. Storm total snow accumulations over the 24 to 48 hour period ranged between 1 and 2 feet. Strong northwest winds also produced areas of blowing snow and wind chills in the single digits above and below zero.
Lake-Effect Snow, McKean
- When
- December 5, 7:00 AM EST to December 7, 7:00 PM EST
- Where
- McKean forecast zone
- Reported by
- Trained Spotter
- Coordinates
- 41.808, -78.569 (the zone’s center; the record gives no point)
A prolonged period of lake-effect snow produced significant accumulations over the Northwest Mountains from the 5th through the 7th. Snowfall amounts in excess of 6 inches were observed by the evening of the 5th. Storm total snow accumulations over the 24 to 48 hour period ranged between 1 and 2 feet. Strong northwest winds also produced areas of blowing snow and wind chills in the single digits above and below zero.
Heavy Snow, Cambria
- When
- December 5, 7:00 AM EST to December 7, 7:00 PM EST
- Where
- Cambria forecast zone
- Reported by
- Emergency Manager
- Coordinates
- 40.495, -78.714 (the zone’s center; the record gives no point)
A prolonged period of orographically (terrain) enhanced snow produced significant accumulations over the Laurel Highlands from the 5th through the 7th. Snowfall amounts in excess of 6 inches were observed by the morning of the 6th especially on the ridge tops. Storm total snow accumulations over the 24 to 48 hour period ranged between 10 and 20 inches. Strong northwest winds gusting over 40 mph at times also produced near-blizzard conditions with areas of blowing snow and wind chills in the single digits above and below zero.
Heavy Snow, Somerset
- When
- December 5, 7:00 AM EST to December 7, 7:00 PM EST
- Where
- Somerset forecast zone
- Reported by
- Emergency Manager
- Coordinates
- 39.972, -79.028 (the zone’s center; the record gives no point)
A prolonged period of orographically (terrain) enhanced snow produced significant accumulations over the Laurel Highlands from the 5th through the 7th. Snowfall amounts in excess of 6 inches were observed by the morning of the 6th especially on the ridge tops. Storm total snow accumulations over the 24 to 48 hour period ranged between 10 and 20 inches. Strong northwest winds gusting over 40 mph at times also produced near-blizzard conditions with areas of blowing snow and wind chills in the single digits above and below zero.
- Lake-Effect Snow
- Heavy snow in bands downwind of a large lake as cold air crosses warmer water.
- 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.
- Lake-Effect Snow in New York, December 5 to 8, 2010$125,000 · 8 events
- Lake-Effect Snow in Michigan, December 5 to 8, 201011 events
- Avalanche in Colorado, December 5, 20101 injured · 1 event
- Lake-Effect Snow in Michigan, December 5 to 7, 20108 events
- Blizzard and Winter Storm in West Virginia, December 5 to 8, 20106 events
- Blizzard and Heavy Snow in Pennsylvania, December 5 to 7, 20106 events
- Heavy Snow in West Virginia, December 5 to 7, 20106 events
- Lake-Effect Snow and Winter Weather in Michigan, December 5 to 7, 20104 events
- Freezing Fog in Montana, December 5, 20103 events
- Heavy Snow in West Virginia, December 5 to 7, 20102 events
- High Wind in California, December 5, 201062 kt wind · 2 events
- Heavy Snow in California, December 5 to 6, 20102 events
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: 264479, 264480, 264482, 264483.