THE PARTY IS OVER FOR NOW...
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(AN UPDATE TO THE UPDATE)
In my previous post below I mentioned the chance of a quick burst of snow this afternoon in the northwest half of my area that could produce 1/2 to 1" of snow. As a result, winter weather advisories have been issued for some of my counties for the potential of some slick road conditions as the band passes. It will be short in duration, most likely less than an hour but intense snowfall rates for a short period will limit visibility and create a glaze on area roads.
Here are where the advisories will be in effect until 4:00.
This is the narrow band of snow that will cause the short disruption as it pivots northeast this afternoon. Again most of the impacts will be in the NW half of my area, especially EC and NE Iowa into SW Wisconsin. Extreme NW Illinois could also get clipped. Now you know...
THE PREVIOUS UPDATE
The Arctic air that's been front and center is on the move and temperatures are getting set to decline. Northerly winds are also increasing in response to the strong pressure rises behind the front.
These are the temperatures around the nation showing the sharp contrast between the warmth and the coming cold.
A tighter perspective of the Midwest.
Notice the drop in readings over the past 24 hours. A good 25-30 degrees colder behind the front. That's what we get to enjoy on Tuesday.
Bottom line look for falling temperatures this afternoon and Tuesday readings like this are expected around noon.
These are the wind chills Tuesday morning...down around zero to 5 below here. Much colder to the north.
There is the chance of some light snow or flurries sweeping in behind the cold air this afternoon or evening. Little if any accumulation is expected in my area. Best chances for a quick burst less than an inch will be in the northwest half of region. However, it's again a different story further north where winter weather advisories are out for snow accumulations. The GFS shows this for totals through tonight.
Here is where travel will be likely impacted by the snow.
Wednesday a fast moving clipper cuts through the heart of my area. Moisture is limited and dynamics are weak but models are showing the potential for a narrow band of snow of 1/2 to perhaps 1 inch. The GFS has this band moving from NW to SE across the middle of my area late Tuesday night or early Wednesday. It won't be much more than a nuisance but we'll keep and eye on it. It will be a dry powdery snow where it falls.
That's where things stand at mid-day Monday. At least for now, the party is over for our balmy late fall conditions. Roll weather...TS
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