A low pressure system tracking through southern Wisconsin brought accumulating snow to the region during the afternoon of February 17th through the morning hours of February 18th. The snow started moving into east-central Wisconsin during the afternoon of February 17th, before proceeding to spread across the entire region during the evening and overnight hours.
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.
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 GRB wrote it up.
A low pressure system tracking through southern Wisconsin brought accumulating snow to the region during the afternoon of February 17th through the morning hours of February 18th. The snow started moving into east-central Wisconsin during the afternoon of February 17th, before proceeding to spread across the entire region during the evening and overnight hours. The heaviest snow fell in a corridor from Wautoma to Door County during the early morning hours of February 18th with the highest totals over far northeast Wisconsin. Most of the area received 4 to 8 inches, with lower amounts northwest and southeast of this corridor.
Some of the highest snowfall totals included 8.3 inches in Marinette (Marinette Co.), 7.5 inches in Stiles (Oconto Co.), and 7.0 inches near Sister Bay (Door Co.) as well as near Ephraim (Door Co.).
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 Green Bay, WI wrote its last area forecast discussion before the first event at Feb 17, 2:53 PM CST, 1 hour 37 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
3 heavy snow. Local standard time, as filed.
The highest snowfall totals across southern Oconto County included 7.5 inches in Stiles and 6.3 inches near Abrams.
The highest snowfall totals across southern Marinette County included 8.3 inches in Marinette and 6.5 inches near Peshtigo.
The highest snowfall totals across Door County included 7.0 inches near Sister Bay as well as near Ephraim, 6.8 inches in Washington Island, and 6.5 inches near Ellison Bay.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wisconsin in 2020Every state in 2020This day in weather historyWarnings in Wisconsin, February 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 2026-09-30. Each event’s entry at NCEI: 869786, 869785, 869787.