Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
424 AM CDT Tue Jun 30 2026

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-011100-
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-
424 AM CDT Tue Jun 30 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

Dangerous levels of heat will occur again today with heat index
values of 105 degrees or even higher this afternoon. In addition,
overnight temperatures will remain warm, limiting relief from the
heat tonight and in the nights ahead. An Extreme Heat Warning
remains in effect for the entire area.

There is a low chance for a few thunderstorms to effect the
Highway 20 corridor late tonight into early Wednesday morning.


.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

The dangerous combination of hot and very humid conditions will
continue through at least Wednesday and potentially longer. Peak
heat index values between 100 and 110 degrees are likely Wednesday,
along with very warm nighttime lows. Depending on storms and
associated cloud cover, the impactful heat may continue through
the end of the week. An Extreme Heat Warning remains in effect
through Wednesday evening.

There is a chance for thunderstorms throughout the latter half of
the week and into the 4th of July weekend. Strong storms may be
possible across portions of northeast Iowa into extreme northwest
Illinois Wednesday night into Thursday morning. Areas generally
northwest of a line from Iowa City, to Freeport Illinois are in a
Marginal, or Level 1 out of 5 Risk for severe weather Wednesday
night. The entire area is in a Marginal Risk for severe weather on
Thursday. The primary threats will be damaging winds and large
hail.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated today and tonight.

$$

12

URGENT - WEATHER MESSAGE
National Weather Service Quad Cities IA IL
1135 AM CDT Tue Jun 30 2026

IAZ063>065-067-068-076>078-087>089-098-099-ILZ015-024>026-034-035-
MOZ009-010-010045-
/O.EXT.KDVN.XH.W.0001.000000T0000Z-260703T0300Z/
Iowa-Johnson-Cedar-Muscatine-Scott-Keokuk-Washington-Louisa-
Jefferson-Henry IA-Des Moines-Van Buren-Lee-Rock Island-Mercer-
Henderson-Warren-Hancock-McDonough-Scotland-Clark-
Including the cities of Fairfield, Moline, Burlington, Macomb,
Bettendorf, Sigourney, Wapello, Marengo, Muscatine, Rock Island,
Carthage, Fort Madison, Oquawka, Kahoka, Tipton, Washington,
Memphis, Keosauqua, Davenport, Aledo, Iowa City, Mount Pleasant,
and Monmouth
1135 AM CDT Tue Jun 30 2026

...EXTREME HEAT WARNING NOW IN EFFECT UNTIL 10 PM CDT THURSDAY...

* WHAT...Dangerously hot and humid conditions with multiple days of
  heat index values of 100 to 110 expected, along with nighttime
  lows not falling below the mid to upper 70s.

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

* WHEN...Until 10 PM CDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

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.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

&&

$$

Hazard Report Provided By forecast.weather.gov