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Ended official alertUpdated

Flash Flood Warning for Cook, IL; DuPage, IL

This alert has ended.Kept for recent context. Do not use it as a current warning.

Official alert fields

What you need to know

Applies to
Cook, DuPage
Effective
Ended
Official severity
Severe
Official urgency
Immediate
Official certainty
Likely

What is happening

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....

What the bulletin says to do

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.

Read official NWS bulletin

Full official description

Bulletin details

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.

Lifecycle record

Official revisions

2 captured
  1. Update

    Flash Flood Warning issued August 1 at 8:25AM CDT until August 1 at 11:45AM CDT by NWS Chicago IL

    Official revision
  2. Alert

    Flash Flood Warning issued August 1 at 7:41AM CDT until August 1 at 11:45AM CDT by NWS Chicago IL

    Official revision

Source and limitations

Publisher: Weather Alert Watch. Primary source: NWS Chicago IL. This page reorganizes official fields and does not add a forecast or expand the affected area.

CAP status
Actual
Message type
Update
Last collected
Methodology and corrections