


Special Marine Warning
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
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139 WHUS53 KLOT 301903 SMWLOT LMZ740>745-777-779-302100- /O.NEW.KLOT.MA.W.0006.250330T1903Z-250330T2100Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Chicago/Romeoville 203 PM CDT Sun Mar 30 2025 The National Weather Service in Chicago has issued a * Special Marine Warning for... 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... * Until 400 PM CDT. * At 203 PM CDT, severe thunderstorms were located along a line extending from 8 nm east of Aurora to near Joliet, moving northeast at 40 knots. HAZARD...Wind gusts in excess of 50 knots and small hail. SOURCE...Radar. 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. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tornado Watch remains in effect until 700 PM CDT for northeastern Illinois...northwestern Indiana...and the adjacent waters of Lake Michigan. && LAT...LON 4162 8733 4164 8743 4168 8743 4167 8747 4170 8751 4183 8760 4189 8762 4189 8760 4190 8762 4206 8767 4227 8783 4248 8780 4246 8702 4213 8696 4179 8697 4179 8696 4172 8691 4163 8716 4162 8732 4161 8732 TIME...MOT...LOC 1903Z 236DEG 41KT 4181 8810 4148 8812 4116 8811 HAIL...<.75IN WIND...50KTS $$ Carlaw