Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
321 PM CDT Wed Apr 15 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-162030-
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-
321 PM CDT Wed Apr 15 2026 /421 PM EDT Wed Apr 15 2026/

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

.DAY ONE...Tonight.

Weather hazards expected...

  Elevated Thunderstorm Risk...with an associated:
     Level 2 of 5 Damaging Wind Risk...up to 60 mph.
     Level 2 of 5 Large Hail Risk...up to quarter size.
     Level 1 of 5 Tornado Risk.
  Elevated Flooding Risk..

DISCUSSION...

An additional period of thunderstorms are expected, particularly
this evening. Some of these storms may be strong to severe and
produce locally heavy rainfall.

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

Thursday...
  Limited Thunderstorm Risk.
Friday evening into early Saturday morning...
  Limited Thunderstorm Risk...with an associated:
     Level 2 of 5 Severe Thunderstorm Risk.
Sunday Night...
  Elevated Frost Risk.

DISCUSSION...

An additional period of storms is expected Friday evening into
early Saturday morning.

.SPOTTER INFORMATION STATEMENT...

  Spotters may be needed at times through this evening.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the east-northeast at 40 to 45 mph.

$$

Flood Watch
National Weather Service Chicago IL
130 PM CDT Wed Apr 15 2026

ILZ003>006-008-010>013-019>021-023-032-103>108-INZ001-002-010-011-
160230-
/O.CON.KLOT.FA.A.0003.000000T0000Z-260416T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La
Salle-Kendall-Grundy-Kankakee-Livingston-Northern Cook-Central
Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-Lake
IN-Porter-Newton-Jasper-
Including the cities of Channahon, Marseilles, Dwight,
Chesterton, Oswego, Rensselaer, Kankakee, Joliet, Orland Park,
Plainfield, Rockford, McHenry, La Salle, Oak Forest, Sycamore,
Carol Stream, Ottawa, Park Forest, Streator, Morris, Evanston, La
Grange, Hammond, Merrillville, Mokena, Portage, Minooka, Oak
Park, Downers Grove, Gary, Algonquin, Yorkville, Oak Lawn, Elgin,
Bolingbrook, Coal City, Crystal Lake, Beecher, Chicago, Morocco,
Mundelein, Bradley, Palatine, Lombard, Crete, Roselawn,
Valparaiso, Northbrook, Lemont, Waukegan, Wilmington, Schaumburg,
Buffalo Grove, Des Plaines, DeMotte, Kentland, Manhattan,
Woodstock, Wheaton, Cicero, Mendota, Naperville, Pontiac, Aurora,
Belvidere, Byron, Dixon, Plano, DeKalb, Fairbury, Rochelle,
Calumet City, Bourbonnais, Gurnee, Peotone, and Oregon
130 PM CDT Wed Apr 15 2026

...FLOOD WATCH REMAINS IN EFFECT UNTIL 1 AM CDT THURSDAY...

* WHAT...Flash flooding caused by excessive rainfall continues to be
  possible.

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

* WHEN...Until 1 AM CDT Thursday.

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

* ADDITIONAL DETAILS...
  - Additional rounds of showers and thunderstorms are expected
    through this evening. Elevated soil moisture due to recent
    rainfall is expected to increase the susceptibility to flash
    flooding.
  - 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.

&&

$$

Birk

Hazard Report Provided By forecast.weather.gov