Active Weather Alerts
Flood Warning
Issued: 5:29 AM Jun. 22, 2026 – National Weather Service
...FLOOD WARNING IN EFFECT UNTIL 615 AM CDT THIS MORNING... ...REPLACES FLOOD ADVISORY... * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Portions of northeast Illinois, including the following county, Cook and northwest Indiana, including the following counties, Lake IN and Porter. * WHEN...Until 615 AM CDT. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Underpasses may be flooded. * ADDITIONAL DETAILS... - At 1221 AM CDT, Doppler radar and automated rain gauges indicated between 2 and 2.5 inches of rain have fallen today. River gauges on area streams and creeks indicate that flooding is ongoing in the warned area as a result of this heavy rainfall. This is particularly the case along the portions of the Little Calumet, Thorn Creek, Butterfield Creek and Hart Ditch. - The heavy rainfall is expected to come to an end overnight, but area streams and rivers will remain elevated through the night. - Some locations that will experience flooding include... Chicago, Hammond, Gary, Tinley Park, Calumet City, Portage, Merrillville, Valparaiso, Chicago Heights, Roseland, East Chicago, Schererville, Hobart, Lansing, Oak Forest, Harvey, Highland, Blue Island, Munster and Dolton. - 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. Be especially cautious at night when it is harder to recognize the dangers of flooding. &&
Beach Hazard Statement
Issued: 2:03 AM Jun. 22, 2026 – National Weather Service
...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE MONDAY NIGHT... * WHAT...High wave action and dangerous currents expected at Lake Michigan beaches. Waves 4 to 7 ft expected. * WHERE...Lake IL and Northern Cook Counties. * WHEN...Through late Monday night. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures. &&
Small Craft Advisory
Issued: 2:01 AM Jun. 22, 2026 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT TUESDAY... * WHAT...East winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 1 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. &&
River Flood Warning
Issued: 1:43 AM Jun. 22, 2026 – National Weather Service
...FLOOD WARNING IN EFFECT FROM THIS EVENING TO EARLY TUESDAY MORNING... * WHAT...Minor flooding is forecast. * WHERE...Little Calumet River from IN-912 in Hammond downstream to confluence with Thorn Creek in South Holland, including the Munster (Hohman Avenue) gauge. * WHEN...From late this evening to late Monday evening. * IMPACTS...At 12.5 feet, Most areas outside of the levee-protected area are inundated in Hammond and Munster. * ADDITIONAL DETAILS... - At 8:00 PM CDT Sunday the stage was 10.4 feet. - Forecast...The river is expected to rise above flood stage late this evening to a crest of around 13 feet tomorrow morning. It will then fall below flood stage tomorrow evening. - Flood stage is 12.0 feet. - http://www.weather.gov/safety/flood &&
River Flood Warning
Issued: 1:43 AM Jun. 22, 2026 – National Weather Service
...FLOOD WARNING IN EFFECT FROM LATE TONIGHT TO LATE TOMORROW EVENING... * WHAT...Minor flooding is forecast. * WHERE...Thorn Creek from Near Glenwood downstream to confluence with Little Calumet River, including the Thornton gauge. * WHEN...From late tonight to Monday evening. * IMPACTS...At 9.0 feet, Water begins to be diverted through Thorn Creek Diversion Tunnel. * ADDITIONAL DETAILS... - At 8:15 PM CDT Sunday the stage was 5.6 feet. - Forecast...The river is expected to rise above flood stage late tonight to a crest of just above 9 feet tomorrow morning or around midday. It will then fall below flood stage tomorrow afternoon. - Flood stage is 9.0 feet. - http://www.weather.gov/safety/flood &&
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