Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
306 PM CDT Wed Jun 10 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-112015-
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-
306 PM CDT Wed Jun 10 2026 /406 PM EDT Wed Jun 10 2026/

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

.DAY ONE...Tonight.

Weather hazards expected...

  Significant Thunderstorm Risk...with an associated:
     Level 3 of 5 Damaging Wind Risk...up to 75 mph.
     Level 2 of 5 Large Hail Risk...up to one inch in diameter.
     Level 1 of 5 Tornado Risk.
  Elevated Flooding Risk.

DISCUSSION...

Severe thunderstorms will continue into early this evening, with
strong damaging winds the main threat.

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

Thursday...
  Elevated Flooding Risk.
  Significant Thunderstorm Risk...with an associated:
     Level 3 of 5 Severe Thunderstorm Risk.
  Limited Excessive Heat Risk.
Saturday Night through Tuesday...
  Limited Thunderstorm Risk.

DISCUSSION...

Additional severe thunderstorms are possible on Thursday. The
period of highest concern will be during the afternoon and evening
when tornadoes, destructive winds, damaging hail, and flash
flooding will be possible.

.SPOTTER INFORMATION STATEMENT...

  Spotters are encouraged to pass along reports of severe weather today.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the northeast at 40 to 50 mph.

$$

Flood Watch
National Weather Service Chicago IL
654 PM CDT Wed Jun 10 2026

ILZ010>013-019>021-023-032-033-039-103>108-INZ001-002-010-011-019-
110800-
/O.NEW.KLOT.FA.A.0005.260610T2354Z-260611T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
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-
Including the cities of Oswego, Des Plaines, Ottawa, Beecher,
DeKalb, Naperville, Gilman, Merrillville, Palatine, Joliet,
Chicago, Schaumburg, Elgin, Morocco, DeMotte, Evanston, La Salle,
Lombard, Hammond, Mokena, Aurora, Dixon, La Grange, Pontiac,
Chesterton, Yorkville, Bolingbrook, Orland Park, Carol Stream,
Kentland, Peotone, Gary, Kankakee, Wheaton, Manhattan, Paxton,
Coal City, Bourbonnais, Fairbury, Calumet City, Streator, Oxford,
Oak Lawn, Fowler, Dwight, Morris, Bradley, Roselawn, Northbrook,
Gibson City, Valparaiso, Mendota, Watseka, Lemont, Rensselaer,
Plano, Minooka, Downers Grove, Oak Forest, Plainfield, Crete,
Wilmington, Cicero, Oak Park, Park Forest, Channahon, Marseilles,
Portage, and Sycamore
654 PM CDT Wed Jun 10 2026 /754 PM EDT Wed Jun 10 2026/

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT /5 AM EDT/ THURSDAY...

* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...Portions of Illinois, including the following areas,
  Central Cook, De Kalb, DuPage, Eastern Will, Ford, Grundy,
  Iroquois, Kane, Kankakee, Kendall, La Salle, Lee, Livingston,
  Northern Cook, Northern Will, Southern Cook and Southern Will and
  northwest Indiana, including the following areas, Benton, Jasper,
  Lake IN, Newton and Porter.

* WHEN...Until 4 AM CDT /5 AM EDT/ Thursday.

* IMPACTS...Creeks and streams may rise out of their banks. Flooding
  may occur in poor drainage and urban areas. Underpasses may be
  flooded. Roads and streets may be flooded.

* ADDITIONAL DETAILS...
  - A line of thunderstorms with rainfall rates locally in excess
    of 1 to 2 inches per hour may move across portions of
    northern and northeastern Illinois late this evening.
    Rainfall may lead to flooding, especially in urban areas and
    areas that received heavy rainfall earlier this afternoon.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Watch for flash flooding means rapid-onset flooding is
possible, but not yet certain, based upon the latest forecasts.
Flash flooding is a dangerous situation. Persons with interests
along area rivers, creeks, and other waterways should monitor the
latest forecasts and be prepared to take action should flooding
develop.

&&

$$

WSL

Hazard Report Provided By forecast.weather.gov