National Weather Service United States Department of Commerce

Tracking a Couple of Storm Systems Across the Country

Showers, along with a few strong to severe thunderstorms, are expected from the Great Lakes, New England and southward into the Ohio and Tennessee Valleys. In the wake of this system, a stronger storm is expected to track from the Pacific Northwest, Plains and through the Eastern U.S. this weekend. Strong winds, showers and a larger drop in temperatures are expected this weekend into Monday. Read More >

Overview

Fast Facts:

  • A tropical-like air mass that was extremely rare for October results in a period of very heavy rainfall late Wednesday evening into very early Thursday morning, primarily between 11 PM and 2 AM.
  • The area that saw training...or multiple showers and storms...was DuPage into central Cook County, including the immediate north side of Chicago, where over 2 inches of rain fell.
  • This resulted in flash flooding, especially under viaducts, including those under Lake Shore Drive which resulted in the closure of the major road for nearly two hours.
  • The likelihood of heavy rain and the potential for flooding within the region during this period had been mentioned in the forecast since the weekend.
Summary Graphic
Event Summary
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Additional recaps can be found on the NWS Chicago Past Events Page
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