Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
426 AM 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-MOZ009-010-100930-
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-
426 AM 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...TODAY AND TONIGHT

Hot and humid conditions will be seen today with peak afternoon heat
indices ranging from 95 to 105. A heat advisory is in effect along
and south of a line from Sigourney, Iowa to Aledo, Illinois.

There is a slight chance of thunderstorms this afternoon and
early evening. If a storm were to develop it could become severe.
A somewhat better chance for thunderstorms is expected tonight,
mainly north of Interstate 80 in the late evening and especially
overnight. 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...

Spotter activation may be needed this afternoon and tonight, and
is likely Wednesday and Thursday.

$$

Hazard Report Provided By forecast.weather.gov