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Chicago Faces Enhanced Severe Weather Risk with Potential for Tornadoes, Hail, and Damaging Winds

Record-breaking heat and high humidity set the stage for possible severe storms Thursday evening as a cold front moves through the region.

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AccuWeather's forecast map for Friday.
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Overview

  • The Chicago area is under an enhanced (level 3 of 5) risk for severe weather, with primary threats including heavy rain, 75 mph winds, large hail, and possible tornadoes.
  • Storms are expected to develop between 4 p.m. and 10 p.m., with activity contingent on atmospheric conditions aligning with the advancing cold front.
  • Thursday's temperatures are forecast to reach the low 90s, potentially marking the year's first 90° day and nearing the record high of 91° set in 1962.
  • A Dense Fog Advisory was in effect Thursday morning for parts of Cook and Lake counties, with visibility improving as temperatures climbed.
  • Localized risk levels vary, with Chicago proper under an enhanced risk, while southwestern suburbs remain at a slight (level 2) risk for severe weather.