Cook County/Chicago included in updated Winter Weather Advisory

UPDATE 2:15PM CST…The National Weather Service has upgraded the Winter Weather Advisory to a Winter Weather Warning for Iroquois, and Ford counties in Illinois and Newton, Benton, Jasper counties in Indiana – including the following cities, Watseka, Paxton, Morocco, Rensselaer, and Fowler.

 Five to eight inches of new snow is expected over these counties between 6PM CDT this evening and noon CST Saturday. These counties are included in a much larger Winter Warning area shaded in pink on the National Watch/Warning map below that covers much of central and northern Indiana and northwest Ohio.

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…The National Weather Service has upgraded the Winter Weather Advisory to a Winter Weather Warning for Iroquois, and Ford counties in Illinois and Newton, Benton, Jasper counties in Indiana – including the following cities, Watseka, Paxton, Morocco, Rensselaer, and Fowler. 

 Five to eight inches of new snow is expected over these counties between 6PM CST this evening and noon CST Saturday. These counties are included in a much larger Winter Warning area shaded in pink on the National Watch/Warning map below that covers much of central and northern Indiana and northwest Ohio.

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The Chicago National Weather Service Forecast Office has updated the Winter Weather Advisory for later today, tonight and Saturday to include Cook County/Chicago.  Thus the portion of the Chicago area south of Interstate-80 and Cook County is under a Winter Weather Advisory for 4 to 6-inches of snow generally from 6PM this evening and tonight through Saturday afternoon. Over the remainder of the Chicago area and northeast Illinois snowfall will gradually taper off as you go north to the Illinois-Wisconsin state line (see blowup of NE Illinois map below).

Much of Missouri, Illinois, Indiana, Lower Michigan and Ohio into Pennsylvania is under the Winter Weather Advisory, as shown on the U.S. map below. A center of low pressure is forecast to move east-northeast out of the Texas Panhandle today with southerly winds opening up the flow of Gulf of Mexico moisture into the developing system.

Freezing rain, sleet and eventually snow is expected to begin over southern Missouri today with rain to the south. As the storm approaches Illinois, snow will form and spread across northern Missouri and southern Illinois – working its way north into the area along and south of Interstate-80 later this afternoon and early evening – eventually covering all of northeast Illinois tonight. . Low pressure will move through southern Illinois Saturday and track off to the east.

Northeast flow on the north side of the storm could prolong snowfall in Chicago by enhancing the impact of lake-effect snow. To the north along the Wisconsin Lake Michigan shoreline and inland a Lake Effect Snow Watch is in effect for 3 to 5 inches of snow with greater amounts along the immediate shoreline possible.

Graphical depiction of the weather story for today.

NWS Watch, Warning, Advisory Map

One thought on “Cook County/Chicago included in updated Winter Weather Advisory

  1. Pingback: Chicago Snow Forecast: City Could Get Up To 6 Inches Between Friday Rush Hour, Saturday Night | Stunning Guidance

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