Active Weather Alerts
Flash Flood Warning
Issued: 3:45 AM Jan. 9, 2026 – National Weather Service
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 11 PM CST THIS EVENING FOR SOUTHEASTERN COOK AND NORTHWESTERN WILL COUNTIES... At 945 PM CST, Doppler radar and automated rain gauges indicated a line of heavy rainfall extending from near Chicago to Orland Park to Mokena. This line of showers and thunderstorms is drifting slowly eastward with rainfall rates in excess of 1 inch per hour. Worsening of flood impacts is expected shortly after the rainfall onset. 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, Joliet, Hammond, Bolingbrook, Orland Park, Tinley Park, Romeoville, Plainfield, Calumet City, Chicago Heights, Roseland, Lansing, Oak Forest, Harvey, Lockport, New Lenox, Homer Glen, Blue Island, Munster and Dolton. 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. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && FLASH FLOOD...RADAR AND GAUGE INDICATED; EXPECTED RAINFALL RATE...1-1.5 INCHES IN 1 HOUR
Flash Flood Warning
Issued: 3:43 AM Jan. 9, 2026 – National Weather Service
The National Weather Service in Chicago has extended the * Flash Flood Warning for... Northeastern Cook County in northeastern Illinois... DuPage County in northeastern Illinois... Northwestern Will County in northeastern Illinois... * Until 1030 PM CST. * At 942 PM CST, Doppler radar and automated rain gauges indicated a line of heavy rainfall extending from just south of the Chicago Loop to near Orland Park. This line of showers and thunderstorms is drifting slowly eastward with rainfall rates in excess of 1 inch per hour. Worsening of flood impacts is expected shortly after rainfall onset. 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, Hammond, Evanston, Bolingbrook, Skokie, Des Plaines, Orland Park, Oak Lawn, Berwyn, Wheaton, Oak Park, Downers Grove, Elmhurst, Lombard, Ohare Airport, Carol Stream, Romeoville and Plainfield. 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. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && FLASH FLOOD...RADAR AND GAUGE INDICATED; EXPECTED RAINFALL RATE...1-1.5 INCHES IN 1 HOUR
Small Craft Advisory
Issued: 3:35 AM Jan. 9, 2026 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST FRIDAY... ...GALE WARNING REMAINS IN EFFECT FROM 3 AM TO 9 AM CST FRIDAY... * WHAT...For the Small Craft Advisory, south winds to 30 kt and significant waves to 7 ft occasionally to 9 ft. For the Gale Warning, southwest gales to 40 kt and significant waves to 5 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...For the Small Craft Advisory, until 3 AM CST Friday. For the Gale Warning, from 3 AM to 9 AM CST Friday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. &&
Gale Warning
Issued: 3:35 AM Jan. 9, 2026 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST FRIDAY... ...GALE WARNING REMAINS IN EFFECT FROM 3 AM TO 9 AM CST FRIDAY... * WHAT...For the Small Craft Advisory, south winds to 30 kt and significant waves to 7 ft occasionally to 9 ft. For the Gale Warning, southwest gales to 40 kt and significant waves to 5 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...For the Small Craft Advisory, until 3 AM CST Friday. For the Gale Warning, from 3 AM to 9 AM CST Friday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. &&
Special Marine Warning
Issued: 2:33 AM Jan. 9, 2026 – National Weather Service
The National Weather Service in Chicago has issued a * Special Marine Warning for... Nearshore Waters from Wilmette Harbor to Calumet Harbor... Nearshore Waters from Calumet Harbor to Michigan City... Open Waters from Wilmette Harbor to Michigan City out to Mid Lake... * Until 1000 PM CST. * At 831 PM CST, gusty showers were located along a line extending from near Montrose Harbor to near Joliet, moving northeast at 35 knots. HAZARD...Wind gusts to 40 knots. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... Harrison-Dever Crib, Calumet Harbor, Indiana Harbor, 31st Street Harbor, Montrose Harbor, Monroe Harbor, Burns Harbor, Burnham Harbor, Marina Shores at Dune Harbor, Hammond Marina, Jackson Park Harbor, and DuSable Harbor. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor immediately as gusty winds and high waves are expected. && HAIL...0.00IN; WIND...40KTS
Flood Advisory
Issued: 1:03 AM Jan. 9, 2026 – National Weather Service
...FLOOD ADVISORY IN EFFECT UNTIL 11 PM CST THIS EVENING... * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of northeast Illinois, including the following counties, Cook, DuPage, and northern Will. * WHEN...Until 1100 PM CST. * IMPACTS...Underpasses may be flooded. Roads and streets may be flooded. * ADDITIONAL DETAILS... - At 700 PM CST, Doppler radar and automated rain gauges indicated rainfall moving into the area with rates in excess of 0.5 inches per hour. Up to 1 inch of rainfall has been observed since earlier this afternoon. Additional showers and thunderstorms moving into the area over the next hour will likely cause flooding of roadways and poor drainage areas. - Some locations that will experience flooding include... Chicago, Aurora, Joliet, Naperville, Cicero, Hammond, Arlington Heights, Evanston, Schaumburg, Bolingbrook, Palatine, Skokie, Des Plaines, Orland Park, Tinley Park, Oak Lawn, Berwyn, Mount Prospect, Wheaton and Hoffman Estates. - 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. &&
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