Severe Thunderstorm Warning 187, NWS Quad Cities, IA

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Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
321 AM CDT Wed Jun 17 2026

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-180830-
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson-
Cedar-Clinton-Muscatine-Scott-Keokuk-Washington-Louisa-Jefferson-
Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll-
Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson-
Warren-Hancock-McDonough-Scotland-Clark-
321 AM CDT Wed Jun 17 2026

This Hazardous Weather Outlook is for portions of north central
Illinois...northwest Illinois...west central Illinois...east
central Iowa...northeast Iowa...southeast Iowa and northeast
Missouri.

.DAY ONE...TODAY AND TONIGHT

The Wapsipinicon River is experiencing flooding. Please see the
latest Flood Statements and Flood Warnings for details.

A strong system will bring the potential for severe thunderstorms
today. A Moderate, level 4 of 5, risk is forecast for central
Illinois, with an Enhanced, level 3 of 5, risk of severe
thunderstorms south of Highway 30 and the remainder of the area
under a Slight, level 2 of 5, risk. The first round of thunderstorms
will continue through late morning today, with a primary risk of
large hail. After 12 PM, a second round of thunderstorms is expected
along and ahead of the cold front, with all severe weather hazards
possible, including tornadoes. Localized flash flooding will be
possible during both rounds, especially in areas that see multiple
rounds of storms.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

The next chance for thunderstorms will be Sunday and Sunday night.

.SPOTTER INFORMATION STATEMENT...
Spotter activation is expected this morning and this afternoon.

Ellingworth/Ervin