Winter Weather in Wisconsin, December 27, 2020

Name: Winter Weather in Wisconsin, December 27, 2020
Start: 2020-12-27T12:25
End: 2020-12-27T20:55
Location: Wisconsin

December 27, 2020 · NWS MKX · 9 events in 9 counties and zones

Where it happened

Every event with a place to put it; 9 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

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 9

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 MKX wrote it up.

Low pressure tracking from the southern Great Plains to southern Lake Michigan spread a swath of 1-3 inches of snow across southern WI. Areas most impacted by the snow was along and north of a line from Darlington to Madison to Fond du Lac. Numerous vehicle slide-offs and accidents occurred, including some road closures due to those incidents.

What forecasters said that day

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 Milwaukee, WI wrote its last area forecast discussion before the first event at Dec 27, 11:09 AM CST, 1 hour 16 minutes earlier.

Area forecast discussion, Dec 27, 11:09 AM CST, 1 hour 16 minutes before

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Hazardous weather outlook, Dec 27, 4:41 AM CST, 7 hours 44 minutes before

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The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

9 winter weather. Local standard time, as filed.

Winter Weather, Green Lake

When: December 27, 12:25 PM CST to 8:54 PM CST
Where: Green Lake forecast zone
Reported by: Trained Spotter
Coordinates: 43.800, -89.045 (the zone’s center; the record gives no point)

Snow accumulation of 2-3 inches.

Winter Weather, Marquette

When: December 27, 12:25 PM CST to 8:54 PM CST
Where: Marquette forecast zone
Reported by: Trained Spotter
Coordinates: 43.820, -89.399 (the zone’s center; the record gives no point)

Snow accumulation of 2-3 inches.

Winter Weather, Columbia

When: December 27, 1:55 PM CST to 8:55 PM CST
Where: Columbia forecast zone
Reported by: Trained Spotter
Coordinates: 43.467, -89.334 (the zone’s center; the record gives no point)

Snow accumulation of 2-3 inches.

Winter Weather, Sauk

When: December 27, 1:55 PM CST to 8:55 PM CST
Where: Sauk forecast zone
Reported by: Trained Spotter
Coordinates: 43.427, -89.948 (the zone’s center; the record gives no point)

Snow accumulation of 2-3 inches.