Special Marine Warning issued March 30 at 2:33PM CDT until March 30 at 4:00PM CDT by NWS Chicago IL

For the following areas…

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 233 PM CDT, severe thunderstorms were located along a line
extending from near Montrose Harbor to 6 nm south of Midway Airport
to 20 nm southeast of Joliet, moving northeast at 40 knots.

HAZARD…Wind gusts in excess of 50 knots and small hail.

SOURCE…Radar indicated.

IMPACT…Boats could suffer significant structural damage in high
winds. Small craft could capsize in suddenly higher waves.

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.