Active Weather Alerts
Severe Thunderstorm Warning
Issued: 4:59 PM Jul. 27, 2026 – National Weather Service
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 PM CDT FOR LAKE COUNTY... At 1159 AM CDT, a severe thunderstorm was located over Lindenhurst, or near Antioch, moving southeast at 30 mph. HAZARD...70 mph wind gusts and ping pong ball size hail. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect considerable tree damage. Wind damage is also likely to mobile homes, roofs, and outbuildings. Locations impacted include... Waukegan, Arlington Heights, Palatine, Buffalo Grove, Wheeling, Northbrook, North Chicago, Gurnee, Mundelein, Highland Park, Round Lake Beach, Vernon Hills, Zion, Grayslake, Libertyville, Lake Zurich, Lake Forest, Round Lake, Antioch, Wauconda, Fox Lake, Barrington, Lake Villa, Island Lake, and Deerfield. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && THUNDERSTORM DAMAGE THREAT...CONSIDERABLE; HAIL THREAT...RADAR INDICATED; MAX HAIL SIZE...1.50 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...70 MPH
Special Marine Warning
Issued: 4:54 PM Jul. 27, 2026 – National Weather Service
...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 145 PM CDT... For the following areas... Nearshore Waters from Winthrop Harbor to Northerly Island... Open Waters from Winthrop Harbor to Michigan City out to Mid Lake... At 1153 AM CDT, numerous severe thunderstorms were moving along the Lake Michigan shoreline, southeast at around 20 knots. HAZARD...Wind gusts to nearly 50 knots and large hail. SOURCE...Radar indicated. 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, Wilmette Harbor, Winthrop Harbor, Montrose Harbor, Monroe Harbor, Waukegan Harbor, Belmont Harbor, Diversy Harbor, and DuSable Harbor. PRECAUTIONARY/PREPAREDNESS ACTIONS... Boaters should seek safe harbor immediately until this storm passes. Wind gusts to nearly 50 knots, large hail, high waves, dangerous lightning, and heavy rain are possible with this storm. && HAIL...>.75IN; WIND...49KTS
Severe Thunderstorm Watch
Issued: 4:41 PM Jul. 27, 2026 – National Weather Service
CW . ADJACENT COASTAL WATERS INCLUDED ARE NEW BUFFALO MI TO ST JOSEPH MI MICHIGAN CITY IN TO NEW BUFFALO MI LAKE MICHIGAN MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM OFFSHORE TO MID-LINE OF LAKE. LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5NM OFFSHORE TO MID LAKE LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5NM OFFSHORE TO MID LAKE LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5NM OFFSHORE TO MID LAKE LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5NM OFFSHORE TO MID LAKE 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 TO MICHIGAN CITY IN 5NM OFFSHORE TO MID LAKE ST JOSEPH TO SOUTH HAVEN MI SOUTH HAVEN TO HOLLAND MI HOLLAND TO GRAND HAVEN MI GRAND HAVEN TO WHITEHALL MI WHITEHALL TO PENTWATER MI PENTWATER TO MANISTEE MI LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5NM OFFSHORE TO MID LAKE LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5NM OFFSHORE TO MID LAKE LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5NM OFFSHORE TO MID LAKE LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5NM OFFSHORE TO MID LAKE LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5NM OFFSHORE TO MID LAKE LAKE MICHIGAN FROM ST JOSEPH TO SOUTH HAVEN MI 5NM OFFSHORE TO MID LAKE
Severe Thunderstorm Watch
Issued: 4:41 PM Jul. 27, 2026 – National Weather Service
IL . ILLINOIS COUNTIES INCLUDED ARE COOK DUPAGE IROQUOIS KANKAKEE LAKE WILL
Beach Hazard Statement
Issued: 4:20 PM Jul. 27, 2026 – National Weather Service
...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY MORNING... * WHAT...High wave action and dangerous currents expected at Lake Michigan beaches. Waves 5 to 9 ft expected. * WHERE...In Illinois, Lake, Northern Cook and Central Cook Counties. In Indiana, Lake and Porter Counties. * WHEN...From late tonight through Wednesday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. For information on swim advisories or bans at Chicago beaches: www. cpdbeaches. com. 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: 2:44 PM Jul. 27, 2026 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 AM TUESDAY TO 7 AM CDT WEDNESDAY... * WHAT...North winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...From 1 AM Tuesday to 7 AM CDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. &&
Heat Advisory
Issued: 2:33 PM Jul. 27, 2026 – National Weather Service
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT /10 PM EDT/ THIS EVENING... * WHAT...Heat index values in excess of 105 expected. * WHERE...In Illinois, Central Cook, DuPage, Lake IL, Northern Cook, and Southern Cook Counties. In Indiana, Benton, Jasper, Lake IN, and Newton Counties. * WHEN...Until 9 PM CDT /10 PM EDT/ this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. &&
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