Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
324 PM CDT Thu Jul 2 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-032030-
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-
324 PM CDT Thu Jul 2 2026 /424 PM EDT Thu Jul 2 2026/

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

.DAY ONE...Tonight.

Weather hazards expected...

  Elevated Excessive Heat Risk Through This Evening.
  Limited Thunderstorm Risk...with an associated:
     Level 1 of 5 Damaging Wind Risk...up to 60 mph.
     Level 1 of 5 Large Hail Risk...up to quarter size.
     Limited Flooding Risk.

DISCUSSION...

An isolated thunderstorm is possible this afternoon north of I-90
in far northern Illinois and south of US-24 in central Illinois.

Scattered thunderstorms are forecast this evening into the
overnight hours, especially near and north of I-80. A few
of these thunderstorms may be strong to severe.

Hot and humid conditions will continue through this evening.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Friday...
  Elevated Thunderstorm Risk...with an associated:
     Level 2 of 5 Severe Thunderstorm Risk.
     Limited Flooding Risk.
  Elevated Excessive Heat Risk south of I-80.
Saturday...
  Limited Thunderstorm Risk...with an associated:
     Level 1 of 5 Severe Thunderstorm Risk.
     Limited Flooding Risk.
Sunday...
  Limited Thunderstorm Risk.

DISCUSSION...

Scattered thunderstorms are probable Friday afternoon across the
entire area and then into early Friday evening across northwest
Indiana. Some of these storms may become severe with damaging
winds the primary severe weather threat.

.SPOTTER INFORMATION STATEMENT...

Spotters may be needed tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east at 40 mph.

$$

Flood Advisory
National Weather Service Chicago IL
122 AM CDT Fri Jul 3 2026

ILC031-043-089-093-197-031300-
/O.NEW.KLOT.FA.Y.0055.260703T0622Z-260703T1300Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook IL-DuPage IL-Kane IL-Kendall IL-Will IL-
122 AM CDT Fri Jul 3 2026

...FLOOD ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING...

* WHAT...Flooding caused from excessive rainfall. This advisory
  replaces the previously issued advisories.

* WHERE...A portion of northeast Illinois, including the following
  counties, Cook, DuPage, Kane, Kendall and Will.

* WHEN...Until 800 AM CDT Friday.

* IMPACTS...Creeks and streams may rise out of their banks.
  Underpasses and low spots may remain flooded.

* ADDITIONAL DETAILS...
  - At 119 AM CDT, Doppler radar and automated rain gauges
    indicated heavy rain due to thunderstorms. Between 2 and 4
    inches of rain have fallen.
  - The heaviest rainfall has already fallen, but an additional
    rainfall amounts up to 1 inch are possible over the area.
  - Some locations that will experience flooding include...
    Chicago, Aurora, Naperville, Elgin, Cicero, Arlington
    Heights, Evanston, Schaumburg, Bolingbrook, Skokie, Des
    Plaines, Berwyn, Mount Prospect, Wheaton, Hoffman Estates,
    Oak Park, Downers Grove, Glenview, Elmhurst and Lombard.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Advisory means minor flooding along waterways and other poor
drainage areas is imminent or may already be occurring. Persons in
the advisory area should use caution and avoid flood waters.

&&

LAT...LON 4190 8826 4199 8826 4215 8774 4211 8770
      4209 8767 4206 8765 4199 8764 4197 8762
      4195 8762 4193 8761 4191 8761 4190 8758
      4188 8759 4188 8760 4182 8758 4158 8860
      4176 8860


$$

DK

Hazard Report Provided By forecast.weather.gov