MADISON, Wis. -- As a slow-moving winter storm blows across the southern part of Wisconsin, city of Madison snow plow drivers are keeping busy.

A winter storm warning is in effect for southeastern and east central Wisconsin through Wednesday morning. The storm is expected to bring about a foot of snow to Lake Michigan counties.

A winter weather advisory was issued for the rest of southern Wisconsin and for west-central regions and portions in the northeast. The advisory runs for southwestern Wisconsin until 6 p.m. on Wednesday and for south-central Wisconsin until 6 a.m. Wednesday.

The city of Madison has been using 60 to 70 pieces of equipment to clear the main roads Tuesday, and there will be a full city plow effort overnight.

Tuesday evening, crews will be switching over to clear some side streets and some residential areas.

Streets Superintendent Al Schumacher said it's always hard to balance when to pull crews off the main roads in a storm that spans more than 12 hours, but he's hoping all roads will be ready for the morning commute Wednesday.

"We have to pull some trucks off the main arterials in order to plow the residential areas. It's a catch 22, but we're hoping to have the city plowed and the main streets in pretty good driving condition by tomorrow morning's commute," Schumacher said.

Schumacher said the good news is that the snow is not the heavy, wet snow that came in December.

"Plowing a light, powdery, dry snow like this is much easier on the equipment. It's much easier on people shoveling; it's much easier on everything. It moves quicker. We'll be able to get it off the street much quicker than we did in the Dec. 9th blizzard," he said.

But crews will deal with blowing and drifting snow overnight.

Schumacher said the entire city should be clear by 7 a.m. Wednesday. He said Wednesday morning's commute will still be slow going, but he anticipates much better driving conditions by the time people start heading home Wednesday.

In Milwaukee, police reported 106 traffic crashes through the day Tuesday, with 46 of those during the afternoon commute alone.

Germantown police reported that a semitrailer struck a four-wheel drive police vehicle, sending an officer to a hospital with non-life threatening injuries. A second squad was struck by another vehicle as it was responding to the first crash Tuesday.

WISC-TV meteorologist Gary Cannalte said Tuesday night will be mostly cloudy, windy and colder with snow tapering to flurries. Another 1-2 inches of accumulation is possible in the evening, mainly east of Madison, with a total storm accumulation of 4-10 inches with the heaviest amounts southeast of Madison. He said blowing and drifting snow might make travel difficult. The overnight low will dip to 14 degrees.

Cannalte said that Wednesday will be mostly cloudy, breezy and cold with any flurries ending early and then becoming partly sunny. The highs will reach 22 degrees.

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