Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
458 AM CDT Sun Aug 9 2026

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-101100-
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-
458 AM CDT Sun Aug 9 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

Several rounds of thunderstorms are possible today and into this
evening. There is a chance for severe storms especially from late
morning into the afternoon. Damaging winds will be the primary
threat, but large hail and a few tornadoes are also possible. The
Storm Prediction Center has placed much of the OutLook Area in a
Slight(Level 2 of 5) Risk for severe weather today. Locally heavy
rainfall and flash flooding will also be possible in areas with
repeated storm activity.

Dangerous heat and humidity will develop along and south of the
Interstate 80 corridor by this afternoon with heat indices
surpassing the 100 degree mark. A Heat Advisory has been issued
for these areas for this afternoon and evening. Thunderstorms and
clouds may temporarily interrupt the heat at times today.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

Rounds of strong to severe storms will again be possible Monday
and Tuesday as the area continues to lay under an active storm
track. Marginal and Slight Risks for severe weather are in effect
for the Outlook Area for both days.

Depending on cloud cover and areas of rain, dangerous heat may
occur again on Monday and Tuesday with heat index readings
approaching or exceeding 100 degrees. Areas most likely for this
heat will be along and south of the Interstate 80 corridor.

.SPOTTER INFORMATION STATEMENT...

There is a good chance that spotter activation will be needed
today.

$$

12

URGENT - WEATHER MESSAGE
National Weather Service Quad Cities IA IL
1057 AM CDT Sun Aug 9 2026

IAZ063>065-067-068-076>078-087>089-098-099-ILZ015-016-024>026-034-
035-MOZ009-010-100000-
/O.CON.KDVN.HT.Y.0006.260809T1700Z-260810T0100Z/
Iowa-Johnson-Cedar-Muscatine-Scott-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 Rock Island, Oquawka, Tipton, Mount Pleasant,
Aledo, Moline, Macomb, Monmouth, Memphis, Keosauqua, Muscatine,
Bettendorf, Marengo, Geneseo, Washington, Fort Madison, Sigourney,
Iowa City, Kahoka, Davenport, Carthage, Burlington, Wapello, and
Fairfield
1057 AM CDT Sun Aug 9 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING...

* WHAT...Heat index values up to 104 expected.

* WHERE...Portions of northwest and west central Illinois, east
  central and southeast Iowa, and northeast Missouri.

* WHEN...Until 8 PM CDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat
  illnesses.

* ADDITIONAL DETAILS...The heat may be temporarily interrupted at
  times by thunderstorms and storm outflow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

&&

$$

Hazard Report Provided By forecast.weather.gov