# Flood Warning: Cook, IL — retained record

> Retained us-gov-api record from us-gov-api:noaa-weather.

Canonical: https://highsignal.app/data/records/5615e4a98da64878

[← sources](https://highsignal.app/data)


source: [us-gov-api](https://highsignal.app/data/us-gov-api) (us-gov-api:noaa-weather)  published 2026-08-12 21:53 ingested 2026-08-13 07:31

[original source ↗](http://www.weather.gov/)

## extract

Flood Warning — Cook, IL
Severity: Severe. Certainty: Observed.
...The Flood Warning continues for the following rivers in
Illinois...

Thorn Creek at Thornton affecting Cook County.

For the Thorn Creek...including Thornton...Minor flooding is
forecast.

* 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...Until Thursday afternoon.

* IMPACTS...At 9.0 feet, Water begins to be diverted through Thorn
Creek Diversion Tunnel.

* ADDITIONAL DETAILS...
- At 9:30 PM CDT Wednesday the stage was 9.4 feet.
- Recent Activity...The maximum river stage in the 24 hours ending
at 9:30 PM CDT Wednesday was 10.6 feet.
- Forecast...The river has crested and is expected to gradually
fall overnight. It will fall below flood stage late tomorrow
morning.
- Flood stage is 9.0 feet.
- http://www.weather.gov/safety/flood

## retained text

The historical document was shared with another weather alert and cannot be attributed to this record. The original extract is preserved above; the exact alert link was not retained.