Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook...UPDATED
National Weather Service Chicago/Romeoville IL
958 PM CDT Wed Jul 1 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-030300-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
958 PM CDT Wed Jul 1 2026 /1058 PM EDT Wed Jul 1 2026/

This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.

.DAY ONE...Tonight.

Weather hazards expected...

  Limited Thunderstorm Risk...with an associated:
     Level 1 of 5 Damaging Wind Risk...up to 60 mph.

DISCUSSION...

A few storms may graze far northwest and northern Illinois late
tonight and early Thursday morning. Locally gusty winds would be
the main threat.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Thursday...
  Elevated Thunderstorm Risk...with an associated:
     Level 2 of 5 Severe Thunderstorm Risk.
  Elevated Excessive Heat Risk.
Friday...
  Limited Flooding Risk.
  Significant Thunderstorm Risk...with an associated:
     Level 1 of 5 Severe Thunderstorm Risk.
  Elevated Excessive Heat Risk.
Saturday...
  Limited Flooding Risk.
  Elevated Thunderstorm Risk.
  Limited Excessive Heat Risk.
Sunday and Monday...
  Limited Thunderstorm Risk.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation is not anticipated tonight.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the northeast at 35 mph.

$$

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
309 PM CDT Wed Jul 1 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-106>108-INZ001-002-
010-011-019-020615-
/O.CON.KLOT.XH.W.0001.000000T0000Z-260703T0500Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La
Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-Northern
Will-Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-
Benton-
Including the cities of Lombard, Valparaiso, Oswego, Mokena,
Kentland, Morris, Ottawa, DeMotte, Morocco, Oregon, Rensselaer,
Belvidere, Peotone, Yorkville, Downers Grove, Byron, Woodstock,
Oxford, Kankakee, Wheaton, Manhattan, Marseilles, Crystal Lake,
La Salle, Gilman, Joliet, Fowler, Waukegan, Wilmington, Watseka,
Roselawn, Hammond, DeKalb, Plainfield, Merrillville, Elgin,
Rockford, Plano, Fairbury, Chesterton, McHenry, Gurnee, Gary,
Naperville, Carol Stream, Minooka, Pontiac, Bolingbrook, Gibson
City, Algonquin, Aurora, Mundelein, Crete, Channahon, Streator,
Dixon, Paxton, Beecher, Bradley, Buffalo Grove, Mendota,
Sycamore, Bourbonnais, Coal City, Dwight, Portage, and Rochelle
309 PM CDT Wed Jul 1 2026 /409 PM EDT Wed Jul 1 2026/

...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM
EDT/ THURSDAY NIGHT...

* WHAT...Dangerously hot conditions with peak afternoon heat index
  values of 100 to 105 degrees expected.

* WHERE...Portions of central, east central, north central, and
  northeast Illinois and northwest Indiana.

* WHEN...Until midnight CDT /1 AM EDT/ Thursday Night.

* IMPACTS...Heat related illnesses increase during heat waves.

* ADDITIONAL DETAILS...Dangerous heat is expected to persist through
  Thursday. Thunderstorms may begin to bring some relief from the
  heat for portions of northern Illinois by Thursday afternoon or
  evening.

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