Lake-Effect Snow, Southern Herkimer
- When
- November 17, 8:00 PM EST to November 18, 9:00 AM EST
- Where
- Southern Herkimer forecast zone
- Reported by
- Broadcast Media
- Coordinates
- 43.420, -74.962 (the zone’s center; the record gives no point)
Lake-Effect Snow in New York, November 17 to 18, 2011
Colder air filtered into the region over the relatively warmer waters of Lake Ontario resulting in lake effect snows in the Mohawk Valley. Snowfall amounts ranged from 4 to around 9 inches within the more persistent snow bands.
Where it happened
Every event with a place to put it; 1 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
- 1
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 ALY wrote it up.
Colder air filtered into the region over the relatively warmer waters of Lake Ontario resulting in lake effect snows in the Mohawk Valley. Snowfall amounts ranged from 4 to around 9 inches within the more persistent snow bands.
The radar
The national radar mosaic for the moment the first event began.
Event by event
1 lake-effect snow. Local standard time, as filed.
What these are
- Lake-Effect Snow
- Heavy snow in bands downwind of a large lake as cold air crosses warmer water.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- High Wind in Wyoming, November 17, 2011
- Winter Storm in Wyoming, November 17 to 19, 2011
- High Wind in Montana, November 17, 2011
- Heavy Snow in Idaho, November 17 to 18, 2011
- Winter Storm in Montana, November 17 to 19, 2011
- Heavy Snow and High Wind in Idaho, November 17 to 18, 2011
- Winter Storm in Montana, November 17 to 19, 2011
- Heavy Snow in Idaho, November 17 to 19, 2011
- Heavy Snow in Idaho, November 17 to 18, 2011
- Heavy Snow in Washington, November 17 to 19, 2011
- Heavy Snow in Washington, November 17 to 18, 2011
- Lake-Effect Snow in Michigan, November 17, 2011
More
Every storm in New York in 2011Every state in 2011This day in weather historyWarnings in New York, November 2011
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 2026-10-01. Each event’s entry at NCEI: 350550.