043
WGUS43 KLOT 120148
FLWLOT

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Chicago IL
848 PM CDT Tue Aug 11 2026

...The National Weather Service in Chicago has issued a Flood Warning
for the following rivers in Illinois...

  Thorn Creek at Thornton affecting Cook County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Warning means water levels above flood stage are imminent or
may already be occurring. Persons along rivers and streams in the
warned area should take immediate precautions to protect life and
property.

These forecasts are based on observed precipitation as well as
forecast precipitation 24 hours into the future. Changes to the
rainfall forecast, or any additional rainfall after 24 hours, may
cause changes to these river forecasts.

Additional information is available at www.weather.gov.

The next statement will be issued by Wednesday afternoon.

&&

ILC031-122000-
/O.NEW.KLOT.FL.W.0068.260812T0148Z-260813T2100Z/
/THNI2.1.ER.260811T2331Z.260812T0600Z.260813T1500Z.NO/
848 PM CDT Tue Aug 11 2026

...FLOOD WARNING IN EFFECT FROM THIS EVENING TO THURSDAY AFTERNOON...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Thorn Creek from Near Glenwood downstream to confluence
  with Little Calumet River, including the Thornton gauge.

* WHEN...From this evening to Thursday afternoon.

* IMPACTS...At 11.0 feet, 187th Street threatened in Glenwood.

* ADDITIONAL DETAILS...
  - At 8:30 PM CDT Tuesday the stage was 9.6 feet.
  - Forecast...The river is expected to rise to a crest of 10.7 feet
    just after midnight tonight. It will then fall below flood stage
    late Thursday morning.
  - Flood stage is 9.0 feet.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4161 8760 4158 8754 4151 8760 4154 8767


$$

Petr