Wednesday, November 24, 2010

Holiday Travel may be a little Slick

Winter Weather Advisories to the North and Winter Weather/Freezing Rain Advisories to the South

As of right now there are no current Advisories for the Stateline, but be careful as you get ready to head out for your holiday travels.  Either up to the north or down to the south you will more than likely run into some type of weather delay.  We'll be watching temperatures fairly closely throughout the morning and afternoon hours as that will help determine what type of precipitation we see.   Freezing rain is already being reported down through Central Illinois where in Peoria there have been numerous traffic accidents from I-474 East thru the city - mostly on ramps and overpasses.  Temperatures here have been rising into the lower 30s, but looking at the forecast sounding from Davenport (which shows how the temperature and dew point change with height) there is a warmer, but dry, layer aloft.  This will more than likely allow the precipitation to evaporate before reaching the ground but also help to cool the atmosphere above because evaporation is a cooling process.  So that's why I believe we could see freezing rain in the beginning before possibly changing over to a mix of freezing rain/sleet/rain later this afternoon.  As the low pressure system pulls closer to us tonight, there might be enough warm air that gets wrapped into it that we might see a change over to all rain before changing back to freezing rain, along with some fog, tonight and Thursday morning.

Click here for information on Illinois roadways
Click here for information on Wisconsin roadways

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