1. 2. 3. Northern Wisconsin Weather: Cooling down and updates on S.WI's tornadoes. 4. 12. 15. 16. 17. 18. 19. 20. 23. 24.

25. 26. Cooling down and updates on S.WI's tornadoes. 27. 28.

Temperatures dropped closer to normal and some brief sun later this afternoon.

After the low pressure system (that brought tornadoes to southern Wisconsin on Monday) has finally pulled off to the northeast, and high pressure has built in. Drier air brought the fog and freezing fog to an end last night, and now relative humidities across the area range between 60 and 70%.

The day on Maple Hill began overcast but status clouds have thinned and broken up.

Fronts on the move.

This surface analysis map (from the HPC) shows the 1020 mb (30.13 "Hg) high has already centered itself over us and will be pushing off to our east. Meanwhile, the warm front of an approaching low pressure system will bring more clouds to the region tonight.

My current numbers at 15:35:

light WSW

Temps begin a return to normal.

As of 9:00 this morning, temperatures were 10 to 20 degrees cooler than 24 hours earlier, across
most of the Western Great Lakes.

The line of colder air runs all the way from western New York down to Alabama. The moderate air over the Rockies is in association with our next system, but won't fully make it's way here.

This map (to the right) is from one of my favorite sites: Hourly US Weather Statistics. Many more maps of current weather can be found there.

The next snow maker is on it's way.

A low pressure has currently exited the central Rockies and will continue moving east towards the Ohio Valley.

Dry air will make heavy snow fall totals unlikely, but enhancement from Lake Superior may increase amounts from Duluth northward along the North Shore.

The map (to the left) is today's Weather Story from NWS Duluth. My area, actually all of the Bayfield Peninsula, could be looking at 2 to 4 inches of new snow by Friday morning.

Behind this system, temperatures will finally be close to average for this time of year.

Normal high/low for 9 January: 23 / 2

Preliminary tornado surveys have been completed by the Milwaukee NWS Office.

The Wheatland Tornado has been rated and EF-3 with estimated top winds 150-160 mph, making it a strong 3. The damage path is approximately 10.8 miles long with an initial width of 200 yards. Luckily the tornado did not pass directly over heavily populated areas.

The Kenosha County Tornado has been rated an EF-1 with winds between 86 and 110 mph. The total length traversed by the tornado has not yet been published, the maximum width of the tornado is between 75 and 100 yards. This tornado passed over the northern suburbs of the city of Kenosha but the strength was weak enough to only produce mainly minor damage to homes, trees, and powerlines. More updates from this survey team are expected in the near future.

And finally, the NWS in La Crosse has posted a bit of climatological information on one of their news pages:

The tornado that struck southeast Wisconsin on Monday was certainly unusual, but there had been a recorded tornado in every month of the year in Wisconsin, except for February.

I find myself saying this again and again, but it's something we need to keep in mind -- while this is not typical, it has happened before.

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