Severe Thunderstorm Warning 274, NWS Quad Cities, IA

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Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
148 PM CDT Sat Aug 15 2026

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-161900-
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-
148 PM CDT Sat Aug 15 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...THIS AFTERNOON AND TONIGHT

Warm and humid conditions this afternoon could bring a few hours
of heat index reading around 100 degrees south of Interstate 80.
Be sure to take breaks, and drink water today.

Another round of showers and storms are possible tonight into
early Sunday morning. Heavy rainfall and lightning will be the
primary threats with any storm, with a low end severe threat for
isolated severe wind gusts as well.

A few area rivers are experiencing flooding. Please see the
latest Flood Statements and Flood Warnings for details.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

We may see some residual showers and storms Sunday morning,
largely posing a heavy rainfall and localized flash flood threat.

Tuesday night into Wednesday, a system will bring the chance for
strong to severe storms. The Storm Prediction Center has
highlighted much of our area in a Day 4 Slight Risk for severe
storms, or level 2 of 5 risk.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is possible again tonight. Reports of flooding
would also be appreciated.

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Special Weather Statement
National Weather Service Quad Cities IA IL
436 PM CDT Sat Aug 15 2026

IAZ063-064-067-076>078-087>089-098-099-ILZ015-016-024>026-034-035-
MOZ009-010-160030-
Iowa-Johnson-Muscatine-Keokuk-Washington-Louisa-Jefferson-
Henry IA-Des Moines-Van Buren-Lee-Rock Island-Henry IL-Mercer-
Henderson-Warren-Hancock-McDonough-Scotland-Clark-
Including the cities of Marengo, Iowa City, Muscatine, Sigourney,
Washington, Wapello, Fairfield, Mount Pleasant, Burlington,
Keosauqua, Fort Madison, Moline, Rock Island, Geneseo, Aledo,
Oquawka, Monmouth, Carthage, Macomb, Memphis, and Kahoka
436 PM CDT Sat Aug 15 2026

...Hot and Humid into This Evening...

Very humid conditions combined with temperatures in the 80s will
create peak heat indices in the upper 90s to lower 100s through
the early evening. If spending time outside, make sure to avoid
strenuous activities, drink plenty of water, and take breaks in
the shade or in air conditioning.

Special Weather Statement
National Weather Service Quad Cities IA IL
511 PM CDT Sat Aug 15 2026

IAZ051-052-063-160000-
Benton-Linn-Iowa-
Including the cities of Vinton, Cedar Rapids, and Marengo
511 PM CDT Sat Aug 15 2026

...Brief Funnel Clouds Possible Early This Evening...

Conditions are favorable for the development of brief funnel
clouds. These types of funnel clouds rarely touch down, and if
they do, they typically produce brief weak tornadoes. The
National Weather Service will continue to closely monitor the
situation. 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.

Special Weather Statement
National Weather Service Quad Cities IA/IL
531 PM CDT Sat Aug 15 2026

IAZ098-099-MOZ010-152300-
Van Buren IA-Lee IA-Clark MO-
531 PM CDT Sat Aug 15 2026

...A strong thunderstorm will impact portions of southeastern Van
Buren, west central Lee and northwestern Clark Counties through 600
PM CDT...

At 531 PM CDT, trained weather spotters reported a strong
thunderstorm near Croton, or 11 miles north of Kahoka, moving east at
25 mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Trained weather spotters.

IMPACT...Strong winds could break tree limbs, knock down weak trees
         and blow around unsecured objects.

Locations impacted include...
Donnellson, Franklin, Croton, Farmington, Revere, Charleston, Anson,
Lee County Fairgrounds, Chambersburg, Heath Memorial Conservation
Area, Shimek State Forest, Battle of Athens Campground, Indian Lake
Park, Primrose, Peaksville, Wilson Lake, and Argyle.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4056 9193 4071 9172 4065 9145 4042 9166
TIME...MOT...LOC 2231Z 287DEG 22KT 4058 9180

MAX HAIL SIZE...<0.75 IN
MAX WIND GUST...55 MPH

Uttech