Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
308 PM CDT Tue Jun 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-
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308 PM CDT Tue Jun 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...THIS AFTERNOON AND TONIGHT

Hot and humid conditions will continue through this evening with
peak heat indices ranging from 95 to 105. A Heat Advisory remains
in effect along and south of a line from Sigourney, Iowa to Aledo,
Illinois.

There is a slight chance of thunderstorms this evening. If a
storm were to develop it could become severe. A somewhat better
chance for thunderstorms is expected later tonight, mainly north
of Interstate 80 in the late evening and overnight periods.
Isolated severe storms with large hail and damaging winds will be
possible.


.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

Numerous strong to severe storms will be seen Wednesday and Thursday
across the area. The Storm Prediction Center has an Enhanced, level
3 out of 5, risk each day for much of the area.

Two rounds of storms are possible on Wednesday. The first from 10 AM
to 4 PM. Damaging winds and hail are possible with the first round.

The more significant severe risk will be round two, roughly from 5
PM Wednesday to 2 AM Thursday. Initial storm development of
discrete storms is possible in the local area capable of
producing very large hail and strong tornadoes. It is also
possible these discrete storms form further west and evolve into
a line. This line would move through Wednesday evening into the
early overnight with a threat for damaging winds, potentially
over 70 mph, and spin-up tornadoes.

On Thursday another one or two rounds of severe storms is possible
with the threats of large hail, damaging winds and tornadoes.
Timing could be as early as late morning, but is more likely in
the afternoon before ending by early Thursday evening with the
passage of a cold front.

.SPOTTER INFORMATION STATEMENT...

There is a low chance that spotter activation will be needed
through tonight. But it will be likely for Wednesday and
Thursday.

$$

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Hazard Report Provided By forecast.weather.gov