Active Weather Alerts
Marine Weather Statement
Issued: 9:36 AM Apr. 15, 2026 – National Weather Service
...STRONG THUNDERSTORMS APPROACHING THE WATERS... The areas affected include... Nearshore Waters from Wilmette Harbor to Calumet Harbor... Nearshore Waters from Calumet Harbor to Michigan City... Open Waters from Winthrop Harbor to Michigan City out to Mid Lake... At 434 AM CDT, Doppler radar indicated a gust front and an area of strong thunderstorms, capable of producing winds to around 30 knots and small hail. The gust front and storms were located along a line extending from near Ohare Airport to near Aurora to 24 nm southwest of Joliet, moving northeast at 50 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until these storms pass. The gust front and storms will likely produce winds to around 30 knots, and could pose a serious hazard for boaters. A special marine warning may eventually be required if storms continue to intensify as they approach the nearshore waters. Boaters should consider heading for shore before these strong thunderstorms arrives. &&
River Flood Watch
Issued: 5:24 AM Apr. 15, 2026 – National Weather Service
...FLOOD WATCH IN EFFECT FROM EARLY THIS MORNING UNTIL FURTHER NOTICE... * WHAT...Flooding is possible. * WHERE...Des Plaines River from Palatine Road in Prospect Heights downstream to Irving Park Road in Chicago, including the Des Plaines gauge. * WHEN...From early this morning until further notice. * IMPACTS...At 15.0 feet, Structures threatened at Methodist Campground in Des Plaines. Forest preserve roadways are threatened. * ADDITIONAL DETAILS... - At 11:45 PM CDT Tuesday the stage was 13.2 feet. - Forecast...Due to recent and forecast rain, the river is rising and may exceed flood stage by tomorrow. - Flood stage is 15.0 feet. - http://www.weather.gov/safety/flood &&
Flood Watch
Issued: 12:11 AM Apr. 15, 2026 – National Weather Service
...FLOOD WATCH IN EFFECT UNTIL 6 AM CDT WEDNESDAY... * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of Illinois, including the following areas, Boone, Central Cook, De Kalb, DuPage, Eastern Will, Kane, Kendall, Lake IL, McHenry, Northern Cook, Northern Will, Ogle, Southern Cook, Southern Will and Winnebago and northwest Indiana, including the following area, Lake IN. * WHEN...Until 6 AM CDT Wednesday. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Roads and streets may be flooded. * ADDITIONAL DETAILS... - An area of thunderstorms with rain rates up to one to two inches per hour is expected to move through the area this evening through the overnight hours. Elevated soil moisture due to recent rainfall is expected to increase the susceptibility to flash flooding. - 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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