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Wisconsin Weather

DEC 27, 2020 | Snow Advisory in Central WI

LAST UPDATE : DEC 28, 2020

SUN 8:41AM

Tiny adjustments to snow map. 2-5" instead of 2-4" in narrow band roughly WI Dells to Green Bay. Trimmed back on southern fringe. Also moving start time earlier...bulk of event still this aft/evening.

SAT 8:34PM

updated snowfall amounts. Heaviest amts on axis through Green Bay. Some short range models have locally (very narrow zone of potential) higher than 4" but comfortable with 2-4" zone. 00z run wants to push main band further north into northeast WI. WE'LL SEE.

SAT 10:46AM

Small adjustments to snowfall predictions based on 12z run. More clarity in the north. Update as needed next 24 hours.

Wisconsin Weather
Wisconsin Weather

SAT 8:24 AM

Will see light snow develop Sunday aft lasting up to midnight with an organizing weak system. Highest impact will be across central WI. Was going to play it safe with 1-3" broad zone in eastern/southern WI however I felt enough confidence in 3 or 4" amts in narrow zone in central WI. All models agree on this aspect.

Confidence is LOW across northern Wisconsin. I put the entire region at 0-1". 00/06z models are inconsistent, I hope the 12z will be better. Some are snowier(EC), others much drier. I preferred the NAM over the EC which emphasizes the heaviest amts in central WI.

Forecast Maps

Storm Details

Winter Storm
SUN 10:00 AM - Dec 27, 2020
MON 8:00 AM - Dec 28, 2020
Confidence Level
Storm Class


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