Wisconsin Weather

UPDATED - Winter Storm Warning

Jan 22 2018 8:30 AM CST| 0 Comments | Wisconsin | Weather Forecasting

UPDATE 8:30AM MON

Slight northward shift in the storm track overnight with a little more dry air cutting into north central today. Therefore I trimmed snow totals down a touch. Current radar showing two main slugs of precipitation, the western most will lead to 9-13" of heavy snow near Minneapolis in western Wisconsin. The other will slide north along the eastern shore of lake Michigan and turn to heavy snow across the UP. I think the heavy snow band will setup from Ladysmith to Rhinelander today but I predict there will be higher snow amounts west and east.

Radar at 8:00AM showed two distinct regions of precipitation. Stingy means that it will be difficult to reach expected totals.

The updated snow totals map looks like this. Another thing to mention is that we are hearing reports of icy roads in central Wisconsin due to cold ground temperatures. Snow can cover up these slick spots so be careful on the roads today.


PREVIOUSLY 5:00PM SUN


Heavy snow, sleet, freezing rain, and rain all expected across Wisconsin the next 36 hrs. Precipitation will start as rain or drizzle in southern Wisconsin tonight and spread north. Snow won't start until early Monday morning across the north but will last into Tuesday morning. The storm moves out Tuesday morning.

We are forecasting widespread accumulations of 6-9" in northern Wisconsin between Wausau and Ironwood, with locally higher amounts possible. 9-13" expected near and west of Eau Claire with potential for locally higher amounts due to heavy snow banding. The trickiest location to forecast will be across central Wisconsin where a mixture of snow, sleet, freezing rain, or rain may occur. This could lead to a slushy 1-6" of accumulation depending on the exact track of the low pressure system for places like Winona, Black River Falls, Stevens Point, and Shawano.

Wind gusts of 30 MPH may produce blowing or drifting snow. There is some evidence to support higher snow accumulations in far northeast Wisconsin and Upper Michigan. Confidence wasn't high enough to push into the 9-13" on a widespread scale. For now we'll hint that locally higher accumulations may be possible. We are also watching the freezing rain potential across central Wisconsin. Temperatures reached 44F in WI rapids today and starting to think models could be too cold, thus less of a freezing rain threat. We'll see.

Watches and warnings at 505PM on Sun 1/21/2018

SOUTHERN WISCONSIN

It's a bit foggy now. Precipitation will stay as mostly rain during the event with 0.75 - 1.5" of rainfall accumulation. There is a small chance of a thunderstorm in the far south early Monday morning. Severe weather is not expected.

NAM 4K hinting at some thunder in southern Wisconsin tonight. Only a small chance.

On Tuesday morning colder air will fill in behind the departing system that will turn precipitation to light snow statewide before coming to an end. Only minor accumulations of maybe an inch or two in the east is expected on Tuesday but we will keep an eye on it.

UPDATES

We will be posting storm updates here throughout the event! Check out Hunter's story for more meteorological detail!

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