Heavy Snow, Mercer
- When
- November 20, 8:00 PM EST to November 21, 4:30 PM EST
- Where
- Mercer forecast zone
- Reported by
- Trained Spotter
- Coordinates
- 41.302, -80.258 (the zone’s center; the record gives no point)
Heavy Snow in Pennsylvania, November 20 to 21, 2008
Cold northwest flow behind a cold front brought lake enhanced snow showers to parts of western Pennsylvania, northern West Virginia, and Garrett county Maryland. Storm total snowfall was from 6 to 8 inches.
Where it happened
Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- 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.
What happened
The episode as NWS PBZ wrote it up.
Cold northwest flow behind a cold front brought lake enhanced snow showers to parts of western Pennsylvania, northern West Virginia, and Garrett county Maryland. Storm total snowfall was from 6 to 8 inches.
The radar
The national radar mosaic for the moment the first event began.
Event by event
4 heavy snow. Local standard time, as filed.
Heavy Snow, Forest
- When
- November 20, 8:00 PM EST to November 21, 8:00 PM EST
- Where
- Forest forecast zone
- Reported by
- COOP Observer
- Coordinates
- 41.513, -79.236 (the zone’s center; the record gives no point)
Heavy Snow, Venango
- When
- November 20, 8:00 PM EST to November 21, 8:00 PM EST
- Where
- Venango forecast zone
- Reported by
- Trained Spotter
- Coordinates
- 41.401, -79.758 (the zone’s center; the record gives no point)
Heavy Snow, Fayette
- When
- November 20, 8:00 PM EST to November 21, 11:00 PM EST
- Where
- Fayette forecast zone
- Reported by
- Trained Spotter
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
- Lake-Effect Snow in Pennsylvania, November 20 to 22, 2008
- Lake-Effect Snow in Ohio, November 20 to 22, 2008
- Heavy Snow and Winter Weather in Kentucky, November 20 to 21, 2008
- Lake-Effect Snow in Michigan, November 20 to 21, 2008
- Winter Weather in Maryland, November 20 to 21, 2008
- Lake-Effect Snow in Michigan, November 20 to 21, 2008
- Lake-Effect Snow in Indiana, November 20 to 21, 2008
- Lake-Effect Snow in Pennsylvania, November 20 to 22, 2008
- High Wind in New Mexico, November 20, 2008
- High Wind in Utah, November 20, 2008
- Lake-Effect Snow in Michigan, November 20 to 21, 2008
- Winter Weather in Pennsylvania, November 20, 2008
More
Every storm in Pennsylvania in 2008Every state in 2008This day in weather historyWarnings in Pennsylvania, November 2008
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: 142676, 142677, 142678, 142679.