Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
438 AM CDT Wed Jul 1 2026

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-021100-
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-
438 AM CDT Wed Jul 1 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 100 to 105 degrees. In addition, overnight temperatures
will remain warm, limiting relief from the heat tonight. An
Extreme Heat Warning remains in effect for the entire area.

There is a chance for scattered thunderstorms to effect areas
north of the Highway 30 corridor tonight into early Thursday
morning. Areas generally northwest of a line from Cedar Rapids
Iowa, to Freeport Illinois are in a Marginal, or Level 1 out of 5
Risk for severe weather tonight. Damaging wind and heavy rainfall
are the primary threats from any strong storm tonight.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

The dangerous combination of hot and very humid conditions will
continue Thursday mainly south of the Highway 30 corridor with
heat index values between 100 and 105 degrees. 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 for areas along and south of Highway 30 through Thursday
evening.

An increasing chance for thunderstorms will occur through the 4th
of July weekend. Strong to severe storms will be possible Thursday
afternoon and especially Thursday night mainly along and north of
Interstate 80. Areas generally along and north of Highway 30
are in a Slight, or Level 2 out of 5 Risk for severe weather
Thursday. A Marginal Risk is in effect down to the Interstate 80
corridor. The primary threats will be damaging winds, large hail,
and locally torrential rainfall that may produce flash flooding.
There will be a chance for more storms on Friday and the entire
Outlook Area is in a Marginal Risk for severe weather.

.SPOTTER INFORMATION STATEMENT...

There is a chance that spotter activation will be needed across
portions of northeast Iowa into extreme northwest Illinois
tonight.

$$

12

URGENT - WEATHER MESSAGE
National Weather Service Quad Cities IA IL
253 AM CDT Wed Jul 1 2026

IAZ040>042-051>054-ILZ001-002-007-011600-
/O.CON.KDVN.XH.W.0001.000000T0000Z-260702T0300Z/
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Jo Daviess-
Stephenson-Carroll-
Including the cities of Manchester, Freeport, Vinton, Galena,
Dubuque, Maquoketa, Mount Carroll, Independence, Anamosa, and
Cedar Rapids
253 AM CDT Wed Jul 1 2026

...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 10 PM CDT THIS
EVENING...

* 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...In Illinois, Carroll, Jo Daviess, and Stephenson Counties.
  In Iowa, Benton, Jackson, Jones, Linn, Buchanan, Delaware, and
  Dubuque Counties.

* WHEN...Until 10 PM CDT this evening.

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

* ADDITIONAL DETAILS...The extreme heat may persist through late
  week, but thunderstorms and associated clouds may interrupt the
  heat at times Thursday and Friday.

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