Severe Thunderstorm Warning 279, NWS Quad Cities, IA

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Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
310 AM CDT Fri Aug 21 2026

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-220815-
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-
310 AM CDT Fri Aug 21 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

There will be the chance for strong to severe storms today,
especially for areas along and east of the Mississippi River. Storms
are expected to develop through the afternoon hours with damaging
winds and hail being the primary threats, with isolated tornadoes
being secondary. The Storm Prediction Center has highlighted areas
along and east of the river in a Slight Risk, or level 2 of 5, for
severe weather. A Marginal Risk, level 1 of 5, remains for areas
west.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Storm spotter activation is expected today, especially in Illinois
this afternoon and evening.

ERVIN

Special Weather Statement
National Weather Service Quad Cities IA IL
525 PM CDT Fri Aug 21 2026

IAZ051>053-063>065-067-076>078-220100-
Benton-Linn-Jones-Iowa-Johnson-Cedar-Muscatine-Keokuk-Washington-
Louisa-
Including the cities of Vinton, Cedar Rapids, Anamosa, Marengo,
Iowa City, Tipton, Muscatine, Sigourney, Washington, and Wapello
525 PM CDT Fri Aug 21 2026

...Funnel clouds and weak, brief tornadoes possible through 8 PM...

Conditions are favorable for the development of funnel clouds, and
possibly brief, weak tornadoes.  The National Weather Service will
continue to closely monitor the situation, and may issue a
Tornado Warning if the threat increases. If you see a funnel cloud
or tornado, seek shelter indoors and then contact your local law
enforcement agency for relay to the National Weather Service.