Arctic air spreading across Lake Superior in a north flow generated moderate lake effect snow for portions of western Upper Michigan from the 27th into the 28th.
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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.
The episode as NWS MQT wrote it up.
Arctic air spreading across Lake Superior in a north flow generated moderate lake effect snow for portions of western Upper Michigan from the 27th into the 28th.
The national radar mosaic for the moment the first event began.
2 winter weather. Local standard time, as filed.
The observer eight miles north of Mass City measured 4.6 inches of lake effect snow in 24 hours.
The observer at Herman measured seven inches of lake effect snow in 24 hours.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2020Every state in 2020This day in weather historyWarnings in Michigan, December 2020
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 2026-09-24. Each event’s entry at NCEI: 931240, 931247.