Active Weather Alerts
Flood Advisory
Issued: 11:30 PM Aug. 12, 2025 – National Weather Service
...FLOOD ADVISORY NOW IN EFFECT UNTIL 745 PM CDT THIS EVENING... * WHAT...Flooding caused by excessive rainfall continues. * WHERE...A portion of northeast Illinois, including the following county, Cook. * WHEN...Until 745 PM CDT. * IMPACTS...Flooding may occur in poor drainage and urban areas. Roads and streets may be flooded. * ADDITIONAL DETAILS... - At 627 PM CDT, Doppler radar indicated that heavy rainfall has moved out of the area. Flooding from earlier showers and thunderstorms may continue over the next few hours. Additional shower activity is possible in the area this evening, which may prevent some flooded areas from receding. - Some locations that will experience flooding include... Chicago, Evanston, Skokie, Oak Park, Park Ridge, Niles, Irving Park, Austin, West Ridge, West Town, Lake View, Lincoln Park, Melrose Park, Maywood, Franklin Park, Norridge, Portage Park, Belmont Cragin, Albany Park and Dunning. - 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. &&
Flood Advisory
Issued: 10:45 PM Aug. 12, 2025 – National Weather Service
...FLOOD ADVISORY IN EFFECT UNTIL 745 PM CDT THIS EVENING... ...REPLACES FLASH FLOOD WARNING... * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of northeast Illinois, including the following counties, Cook and Will. * WHEN...Until 745 PM 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 542 PM CDT, Doppler radar and automated rain gauges indicated that rainfall had moved out of the area. Flooding from earlier showers and thunderstorms may continue over the next few hours. Additional shower activity is possible in the area this evening, which may prevent some flooded areas from receding. - Some locations that will experience flooding include... Chicago, Hammond, Orland Park, Tinley Park, Oak Lawn, Calumet City, Chicago Heights, Roseland, Englewood, South Shore, Lansing, Oak Forest, Harvey, New Lenox, Homer Glen, Blue Island, Munster, Dolton, Park Forest and Homewood. - 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. &&
Flash Flood Warning
Issued: 10:29 PM Aug. 12, 2025 – National Weather Service
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING FOR CENTRAL COOK, SOUTHEASTERN DUPAGE AND NORTHERN WILL COUNTIES... At 529 PM CDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rainfall with rates up to 2-3 inches per hour near the Downers Grove, Darien, and Woodridge areas. Up to 3 inches of rainfall has fallen thus far. This area of heavy rainfall is moving slowly eastward toward the central Chicago Metropolitan Area. Flooding is expected to begin shortly after the onset of heavy rainfall. HAZARD...Flash flooding. 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... Chicago, Naperville, Cicero, Bolingbrook, Oak Lawn, Berwyn, Oak Park, Downers Grove, Elmhurst, Lombard, Romeoville, Woodridge, Midway Airport, Austin, South Lawndale, Chicago Lawn, Englewood, Bridgeport, West Town and Chicago Loop. 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. && FLASH FLOOD...RADAR AND GAUGE INDICATED; EXPECTED RAINFALL RATE...2-3 INCHES IN 1 HOUR
Flood Watch
Issued: 4:34 PM Aug. 12, 2025 – National Weather Service
...FLOOD WATCH IN EFFECT THROUGH THIS EVENING... * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of northeast Illinois, including the following areas, Central Cook, DuPage, Eastern Will, Northern Cook, Northern Will, Southern Cook and Southern Will and northwest Indiana, including the following area, Lake IN. * WHEN...Through this evening. * 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... - Showers and thunderstorms are possible this afternoon and evening. Atmospheric conditions are favorable for rainfall rates up to 1-2 inches per hour. In addition to increased runoff potential due to urban land cover in the Chicago Metropolitan Area, near surface soil moisture in some areas is elevated due to recent rainfall. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch for flash flooding means rapid-onset flooding is possible, but not yet certain, based upon the latest forecasts. Flash flooding is a dangerous situation. Persons with interests along area rivers, creeks, and other waterways should monitor the latest forecasts and be prepared to take action should flooding develop. &&
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