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Additional Heavy Rain and Flooding Concerns in Central Texas; Tropical Storm Chantal to Impact the Coastal Carolinas

Heavy rainfall and flooding concerns remain for today across Central Texas and the Hill Country, with scattered thunderstorms expected this afternoon and evening. Tropical Storm Chantal has formed and will bring heavy rainfall and flooding concerns to portions of the coastal Carolinas. Life-threatening surf and rip currents are expected from the Southeast to Mid-Atlantic. Read More >

Overview

Fast Facts:

A supercell thunderstorm developed over Will County, Illinois in the very early morning hours of August 17 shortly after 2 a.m. This storm would end up sustaining itself for well over an hour as it moved into northwest Indiana. The storm was substantially deep and very well organized, a combination that resulted in large hail and severe winds. While severe storms certainly can produce both, to happen concurrently in the same location is much more rare especially with hail of 1.5" and larger and winds of 70+ mph. This storm had this based on reports, degree of damage, and radar signatures. Hail and wind damage occurred from Peotone, IL in Will County to Wheatfield, IN in Jasper County.

Radar Cross Section
NWS Chicago radar (KLOT) cross section of the powerful thunderstorm.
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Additional recaps can be found on the NWS Chicago Past Events Page
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