Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
226 PM CDT Mon Aug 10 2026

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-111930-
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-
226 PM CDT Mon Aug 10 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

Severe thunderstorms are possible this afternoon and evening.
Damaging winds will be the primary risk with hail and brief spin-
up tornadoes a secondary risk. There is a slight, level 2 out of
5, risk for severe storms north of a Sigourney, Iowa to Galesburg,
Illinois line. A marginal, level 1 out of 5, risk for severe
storms exists for the rest of the area.

Locally heavy rainfall and flooding will be possible in areas with
repeated storm activity.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

A storm complex, likely severe, will impact areas mainly
along and north of Interstate 80 Tuesday morning. Damaging winds,
potentially over 70 mph, will be the primary risk. Brief spin-up
tornadoes will be a secondary risk. Much of the area is in a
slight to enhanced, levels 2 and 3 out of 5, risk for severe
storms.

Boundaries from the Tuesday morning storms will provide the focus
for new storm development Tuesday afternoon and evening. Some of
these storms could be severe.

A heat advisory has been issued for areas along and south of an
Ottumwa, Iowa to Galesburg, Illinois line Tuesday afternoon and
evening.

Rounds of strong to severe storms will again be possible Wednesday
as the area continues to lay under an active storm track. There is
a marginal, level 1 out of 5, risk for severe weather for the
outlook Area. Locally heavy rain and flooding will also be a
concern.

There will continue to be an almost daily chance for thunderstorms
into the upcoming weekend.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is possible this afternoon and evening for
areas east of the Mississippi. Spotter activation is likely
Tuesday morning.

$$

Special Weather Statement
National Weather Service Quad Cities IA IL
1021 AM CDT Mon Aug 10 2026

IAZ063>068-076>078-087>089-098-099-ILZ009-015>018-024>026-034-035-
MOZ009-010-110100-
Iowa-Johnson-Cedar-Clinton-Muscatine-Scott-Keokuk-Washington-
Louisa-Jefferson-Henry IA-Des Moines-Van Buren-Lee-Whiteside-
Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson-Warren-
Hancock-McDonough-Scotland-Clark-
Including the cities of Marengo, Iowa City, Tipton, Clinton,
Muscatine, Davenport, Bettendorf, Sigourney, Washington, Wapello,
Fairfield, Mount Pleasant, Burlington, Keosauqua, Fort Madison,
Sterling, Moline, Rock Island, Geneseo, Princeton, Hennepin,
Aledo, Oquawka, Monmouth, Carthage, Macomb, Memphis, and Kahoka
1021 AM CDT Mon Aug 10 2026

...Heat Indices Approaching 100 This Afternoon...

Hot and humid conditions will be seen across the area this
afternoon, especially the Interstate 80 corridor on south. Heat
indices are expected to be 95 to 100 for much of the afternoon
hours. Some localized areas may see heat indices briefly above 100
during the mid to late afternoon hours.

$$

Hazard Report Provided By forecast.weather.gov