Wisconsin Weather

OFFICIAL FORECAST - Winter Storm Begins Wednesday Night

RIGHT NOW - light snow developing today

Wisconsin Weather
Current Regional Radar.

Storm Summary

A major storm system strong will track across Wisconsin bringing heavy snow, rain, and light freezing rain tonight through Friday. Wisconsin Weather will be monitoring the storm closely so keep it here for the absolute latest information!

Wisconsin Weather
Generalized timeline of changeovers. Shared this a few times already because the overall scenario remains the same. Check out our facebook live broadcast for a better breakdown.

The storm will start late Wednesday night or early Thursday morning. The initial wave of precipitation develops and pushes northeast. Precipitation may start as snow, freezing rain, or sleet but change to rain for most by Thursday afternoon. North of HWY 29 in northeast Wisconsin precipitation will stay as snow longer before changing to rain resulting in higher snow accumulations. The changeovers can be difficult to describe so please check out our facebook live broadcast on Wednesday night!

For the rest of Wisconsin, widespread rain is expected with rainfall amounts up to 2.0". Latest models have put the highest rainfall totals across central Wisconsin. Snow showers will close out the event Friday night as temperatures decrease.

The National Weather Service has issued a Winter Storm Warning across much of Minnesota into Douglass and Bayfield counties. A Winter Weather Advisory for the rest of northern Wisconsin for the combination of snow, rain, and freezing rain (possibly). See details below:

Wisconsin Weather
12PM Thursday warnings and advisories. NWS has been trimming back. Snow ends on Friday so storm not over.

STORM TIMING & DETAILS

Wisconsin Weather
Storm total snowfall predictions for Thursday and Friday.

  • TIMING - The storm will begin after 6PM tonight spreading northeast as snow changing to rain Thursday. There will be a lull in the action Thursday night as the system occludes. The event will end as light snow wrapping around on Friday.

  • HEAVY SNOW - 8-12" in the far northern counties of Douglas, Bayfield, and Ashland. 5-8" north of HWY 70 for locations such as Hayward, Manitowish Waters, Ironwood, Land o Lakes, and western Upper Michigan. Snow may mix with rain at times. 3-5" north of HWY 29/Wausau, for locations such as Rhinelander and Iron Mountain in northeast Wisconsin changing over to rain Thursday night. Warm air will reduce snow totals in western Wisconsin for places such as Eau Claire, Black River Falls.

  • The bulk of accumulation will occur on Thursday with only minor additional accumulations Friday. Some sleet or light freezing rain possible. 1-3" of snow across central Wisconsin. Some of this will come on Thursday then again as the event ends on Friday night.

  • WIDESPREAD RAIN - 0.5" to 2.0" of rain across Wisconsin. In the north rain will mix with snow. Some of that could be wrapped into the snow as liquid equivalent.

Wisconsin Weather
0.5-2.0" of rain storm total

  • FREEZING RAIN - A light glaze of freezing rain is possible across the north. Models have differing opinions, some with and some without. Just to be safe let's plan ahead for this potential.

Wisconsin Weather
Icy glaze possible in northern Wisconsin on Thursday

  • WIND GUSTS - Winds are not expected to be particularly harsh with this event. Gusts of 20-35 MPH are possible on Thursday. Things may quiet down as the lull works through. The strongest gusts will be along Lake Superior in northern Wisconsin.

Wisconsin Weather
Wind gusts of 20-30MPH possible during this event

Simulated Reflectivity

Here is the NAM simulated radar loop for noon Wednesday through Friday night. Time is in UTC(CST +6hr).

Wisconsin Weather
NAM simulated reflectivity starting noon Wednesday ending 6PM Friday.

We will be going live by 4:30 PM tonight, Wednesday Dec 26 on our facebook page to discuss precipitation changeovers and more! Hope to see you there!

This is our final update for this event. For the latest updates visit us on our facebook page. We will post information throughout the event. Thank you!

Important Links

For the latest radar, click here

For the latest warnings & storm reports, click here

For storm chaser video of the storm, click here

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