Active Weather Alerts
Marine Weather Statement
Issued: 5:46 AM Jun. 18, 2025 – National Weather Service
...A STRONG THUNDERSTORM OVER THE WATERS... The areas affected include... Nearshore Waters from Winthrop 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 1245 AM CDT, Doppler radar indicated a strong thunderstorm, capable of producing winds to around 30 knots with additional storms over land approaching the waters. This thunderstorm was located 7 nm northwest of Ohare Airport, or 16 nm west of Wilmette Harbor, moving northeast at 20 knots. Locations impacted include... Harrison-Dever Crib, Burnham Harbor, Hammond Marina, Wilmette Harbor, Jackson Park Harbor, 31st Street Harbor, Monroe Harbor, Burns Harbor, Belmont Harbor, Calumet Harbor, Marina Shores at Dune Harbor, and 59th Street Marina. 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 this storm passes. &&
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