Hazard Report Provided By forecast.weather.gov

Coastal Hazard Message
National Weather Service Chicago IL
318 AM CDT Sat Aug 1 2026

ILZ006-103-104-011630-
/O.CON.KLOT.BH.S.0010.000000T0000Z-260803T1400Z/
Lake IL-Northern Cook-Central Cook-
318 AM CDT Sat Aug 1 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH MONDAY
MORNING...

* WHAT...High wave action and dangerous currents expected at Lake
  Michigan beaches. Waves 6 to 9 feet expected.

* WHERE...Lake IL, Northern Cook and Central Cook Counties.

* WHEN...Through Monday morning.

* IMPACTS...Swimming conditions will be life threatening,
  especially for inexperienced swimmers. For information on swim
  advisories or bans at Chicago beaches: www. cpdbeaches. com.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid dangerous swimming conditions
and do not venture out onto piers, jetties, breakwalls, or other
shoreline structures.

&&

$$

Flash Flood Statement
National Weather Service Chicago IL
825 AM CDT Sat Aug 1 2026

ILC031-043-011645-
/O.CON.KLOT.FF.W.0042.000000T0000Z-260801T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook IL-DuPage IL-
825 AM CDT Sat Aug 1 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1145 AM CDT THIS
MORNING FOR CENTRAL COOK AND SOUTHEASTERN DUPAGE COUNTIES...

At 825 AM CDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Up to 4
inches of rain have fallen. Additional rainfall amounts up to 1 inch
are possible in the warned area. Flash flooding is ongoing.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar and automated gauges.

IMPACT...Rapid-onset flooding of creeks, streams, drainage ditches,
         streets, underpasses, low-lying areas, and other poor
         drainage areas.

Some locations that will experience flash flooding include...
  Downers Grove, Elmhurst, Lombard, Addison, Woodridge, Glen Ellyn,
  Melrose Park, Maywood, Brookfield, Franklin Park, Hinsdale,
  Westchester, Lemont, La Grange, Burr Ridge, Oak Brook and Elmwood
  Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Warning means rapid-onset flooding is imminent or may
already be occurring. Persons along creeks, drainage ditches, and
other waterways should take immediate precautions to protect life and
property.

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 4173 8809 4184 8807 4191 8803 4195 8792
      4193 8782 4186 8781 4164 8791 4164 8803
      4173 8803

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

Kluber

Flood Advisory
National Weather Service Chicago IL
824 AM CDT Sat Aug 1 2026

ILC031-043-197-011545-
/O.EXT.KLOT.FA.Y.0073.000000T0000Z-260801T1545Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook IL-DuPage IL-Will IL-
824 AM CDT Sat Aug 1 2026

...FLOOD ADVISORY NOW IN EFFECT UNTIL 1045 AM CDT THIS MORNING...

* WHAT...Flooding caused by excessive rainfall continues.

* WHERE...Western Cook County in northeastern Illinois...
  DuPage County in northeastern Illinois...
  Northwestern Will County in northeastern Illinois...

* WHEN...Until 1045 AM CDT.

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

* ADDITIONAL DETAILS...
  - At 822 AM CDT, Doppler radar and automated rain gauges indicated
    heavy rain due to thunderstorms. Minor flooding is ongoing in the
    advisory area. Between 1 and 3 inches of rain have fallen, with
    locally higher totals over 3 inches in southeast DuPage County.
  - Additional rainfall amounts up to 1 inch are expected over the
    area. This additional rain will result in minor flooding.
  - Some locations that will experience flooding include...
    Aurora, Joliet, Naperville, Arlington Heights, Schaumburg,
    Palatine, Des Plaines, Mount Prospect, Wheaton, Hoffman Estates,
    Downers Grove, Elmhurst, Lombard, Bartlett and Streamwood.
  - 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.

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 4193 8826 4203 8821 4211 8813 4215 8792
      4147 8790 4135 8825 4146 8825 4154 8803
      4173 8803 4172 8826


$$

Kluber

Flood Advisory
National Weather Service Chicago IL
821 AM CDT Sat Aug 1 2026

ILC031-197-011615-
/O.CON.KLOT.FA.Y.0074.000000T0000Z-260801T1615Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook IL-Will IL-
821 AM CDT Sat Aug 1 2026

...FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1115 AM CDT THIS MORNING...

* WHAT...Flooding caused by excessive rainfall continues.

* WHERE...Cook County in northeastern Illinois...
  Central Will County in northeastern Illinois...

* WHEN...Until 1115 AM CDT.

* 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...
  - At 820 AM CDT, Doppler radar and automated rain gauges indicated
    heavy rain due to thunderstorms. Minor flooding is ongoing in the
    advisory area. Between 1 and 2 inches of rain have fallen.
  - Additional rainfall amounts up to 1 inch are expected over the
    area. This additional rain will result in minor flooding.
  - Some locations that will experience flooding include...
    Chicago, Cicero, Evanston, Skokie, Des Plaines, Orland Park,
    Tinley Park, Oak Lawn, Berwyn, Mount Prospect, Oak Park,
    Glenview, Ohare Airport, Wheeling, Park Ridge, Calumet City,
    Northbrook, Chicago Heights and Niles.
  - 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.

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 4215 8792 4216 8776 4207 8767 4187 8760
      4185 8760 4175 8752 4147 8753 4146 8779
      4147 8791


$$

Kluber

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
327 AM CDT Sat Aug 1 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-020830-
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-
327 AM CDT Sat Aug 1 2026 /427 AM EDT Sat Aug 1 2026/

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

.DAY ONE...Today and Tonight.

Weather hazards expected...

  Limited Thunderstorm Risk.
  Elevated Flooding Risk.
  High Swim Risk Lake Michigan Beaches.

DISCUSSION...

Periods of rain, heavy at times will continue through this
evening and may lead to localized flooding. A few thunderstorms
are also possible but severe weather is not expected.

High waves and rip currents will lead to dangerous swimming
conditions Lake Michigan beaches.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Sunday and Monday...
  High Swim Risk Lake Michigan Beaches.
Wednesday...
  Limited Flooding Risk.
  Limited Thunderstorm Risk.
Thursday and Friday...
  Limited Thunderstorm Risk.

DISCUSSION...

Dangerous swimming conditions will continue at Lake Michigan
beaches through Monday morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward the north at 15 to 25 mph.

$$

Hazard Report Provided By forecast.weather.gov