Active Weather Alerts
River Flood Warning
Issued: 11:37 AM Apr. 4, 2026 – National Weather Service
...FLOOD WARNING IN EFFECT FROM THIS MORNING TO EARLY TOMORROW 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 morning to early tomorrow afternoon. * IMPACTS...At 9.0 feet, Water begins to be diverted through Thorn Creek Diversion Tunnel. * ADDITIONAL DETAILS... - At 6:15 AM CDT Saturday the stage was 9.0 feet. - Forecast...The river is expected to rise to a crest of 10.0 feet this afternoon. It will then fall below flood stage tomorrow morning. - Flood stage is 9.0 feet. - http://www.weather.gov/safety/flood &&
Flood Warning
Issued: 11:17 AM Apr. 4, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL 10 AM CDT THIS MORNING... * WHAT...Flooding caused by excessive rainfall continues. * WHERE...Portions of Illinois, including the following counties, Cook, Grundy, Kankakee, La Salle, Livingston and Will and northwest Indiana, including the following county, Lake IN. * WHEN...Until 1000 AM CDT. * IMPACTS...Creeks and streams may rise out of their banks. Underpasses may be flooded. Roads and streets may be flooded. * ADDITIONAL DETAILS... - At 609 AM CDT, Doppler radar and automated rain gauges indicate a swath of 1 to 3 inches of rain fell over the warned area late last evening, with a localized amounts near 4 inches across parts of central Livingston county. While the threat for additional heavy rain is ending, standing water on roads will continue this morning. Additionally, several creeks and streams, particularly across southern Cook county are rising into action or minor flood stage. - Additional rainfall amounts up to 0.5 inches are possible in the warned area. - Some locations that will experience flooding include... Chicago, Hammond, Gary, Orland Park, Tinley Park, Calumet City, Chicago Heights, Roseland, East Chicago, Lansing, Oak Forest, Harvey, New Lenox, Highland, Blue Island, Munster, Dolton, Park Forest, Homewood and Matteson. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Warning means flooding is imminent or may already be occurring. Persons along rivers, creeks, and other waterways should take immediate precautions to protect life and property. &&
Flood Watch
Issued: 11:06 AM Apr. 4, 2026 – National Weather Service
...FLOOD WATCH REMAINS IN EFFECT UNTIL 10 AM CDT /11 AM EDT/ THIS MORNING... * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of Illinois, including the following areas, Central Cook, DuPage, Eastern Will, Ford, Grundy, Iroquois, Kankakee, Livingston, Northern Cook, Northern Will, Southern Cook and Southern Will and northwest Indiana, including the following areas, Benton, Jasper, Lake IN, Newton and Porter. * WHEN...Until 10 AM CDT /11 AM EDT/ this morning. * IMPACTS...Roads and streets may be flooded. Area creeks and streams are already elevated, increasing the risk of flooding due to additional rainfall. * ADDITIONAL DETAILS... - Lingering showers and thunderstorms, some with brief torrential rainfall, will continue to lead to a threat for instances of flooding this morning. - 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. &&
Small Craft Advisory
Issued: 8:46 AM Apr. 4, 2026 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 10 AM CDT SUNDAY... * WHAT...West winds to 30 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...From 10 AM this morning to 10 AM CDT Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. &&
Local Radar