Weather Alerts-

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Chicago - IL, US, National Weather Service

Cook County

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 35 IN EFFECT UNTIL MIDNIGHT CDT TONIGHT FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 12 COUNTIES IN NORTH CENTRAL ILLINOIS BOONE DE KALB LEE OGLE WINNEBAGO IN NORTHEAST ILLINOIS COOK DUPAGE KANE KENDALL LAKE IL MCHENRY WILL IN INDIANA THIS WATCH INCLUDES 2 COUNTIES IN NORTHWEST INDIANA LAKE IN PORTER THIS INCLUDES THE CITIES OF ALGONQUIN, AURORA, BELVIDERE, BOLINGBROOK, BUFFALO GROVE, BYRON, CAROL STREAM, CHESTERTON, CHICAGO, CRYSTAL LAKE, DEKALB, DIXON, DOWNERS GROVE, ELGIN, EVANSTON, GARY, GURNEE, HAMMOND, JOLIET, LEMONT, LOMBARD, MCHENRY, MERRILLVILLE, MUNDELEIN, NAPERVILLE, OAK LAWN, OREGON, ORLAND PARK, OSWEGO, PARK FOREST, PLANO, PORTAGE, ROCHELLE, ROCKFORD, SCHAUMBURG, SYCAMORE, VALPARAISO, WAUKEGAN, WHEATON, WILMINGTON, WOODSTOCK, AND YORKVILLE.

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Chicago - IL, US, National Weather Service

Northerly Island to Calumet Harbor IL

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 35 IN EFFECT UNTIL MIDNIGHT CDT TONIGHT FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS WINTHROP HARBOR TO WILMETTE HARBOR IL WILMETTE HARBOR TO NORTHERLY ISLAND IL NORTHERLY ISLAND TO CALUMET HARBOR IL CALUMET HARBOR IL TO GARY IN GARY TO BURNS HARBOR IN BURNS HARBOR TO MICHIGAN CITY IN LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5NM OFFSHORE TO MID LAKE LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5NM OFFSHORE TO MID LAKE

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Chicago - IL, US, National Weather Service

Northerly Island to Calumet Harbor IL

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 Winthrop Harbor to Michigan City out to Mid Lake... Until 745 PM CDT. At 545 PM CDT, a severe thunderstorm was located 10 nm west of Midway Airport, or 17 nm west of 31st Street Harbor, moving northeast at 25 knots. HAZARD...Wind gusts 34 knots or greater and large hail. SOURCE...Law enforcement. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. Locations impacted include... Harrison-Dever Crib, 31st Street Harbor, Monroe Harbor, Burns Harbor, Calumet Harbor, Indiana Harbor, Montrose Harbor, Burnham Harbor, Hammond Marina, Jackson Park Harbor, Belmont Harbor, and Marina Shores at Dune Harbor. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. HAIL...>.75IN; WIND...>34KTS

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Chicago - IL, US, National Weather Service

Northerly Island to Calumet Harbor, IL

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 AM WEDNESDAY TO 4 AM CDT THURSDAY... WHAT...For the Dense Fog Advisory, dense fog will reduce visibility to less than 1 NM at times. For the Small Craft Advisory, northwest winds to 30 kt and significant waves to 6 ft occasionally to 8 ft expected. WHERE...Northerly Island to Calumet Harbor, IL. WHEN...From 10 AM Wednesday to 4 AM CDT Thursday. IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.

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Chicago - IL, US, National Weather Service

Portions of Illinois, including the following areas, Central Cook, DuPage, Eastern Will, Grundy, Kane, Kankakee, Kendall, La Salle, Northern Cook, Northern Will, Southern Cook and Southern Will and northwest Indiana, including the following areas, Lake IN and Porter

...FLOOD WATCH IN EFFECT FROM EARLY THIS AFTERNOON THROUGH LATE TONIGHT... WHAT...Flash flooding caused by excessive rainfall is possible. WHERE...Portions of Illinois, including the following areas, Central Cook, DuPage, Eastern Will, Grundy, Kane, Kankakee, Kendall, La Salle, Northern Cook, Northern Will, Southern Cook and Southern Will and northwest Indiana, including the following areas, Lake IN and Porter. WHEN...Through late tonight. 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... - Multiple rounds of showers and thunderstorms with rainfall rates up to 1 to 2 inches per hour will be possible from late this afternoon until late this evening. The highest chance for flooding will be in urban areas and locations that received heavy rainfall over the last several days. - 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.

Avoid the subject event as per the instructions

Chicago - IL, US, National Weather Service

Northerly Island to Calumet Harbor, IL

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 AM WEDNESDAY TO 4 AM CDT THURSDAY... WHAT...For the Dense Fog Advisory, dense fog will reduce visibility to less than 1 NM at times. For the Small Craft Advisory, northwest winds to 30 kt and significant waves to 6 ft occasionally to 8 ft expected. WHERE...Northerly Island to Calumet Harbor, IL. WHEN...From 10 AM Wednesday to 4 AM CDT Thursday. IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.