797 WHUS53 KIWX 150418 SMWIWX LMZ043-046-080-150515- /O.NEW.KIWX.MA.W.0011.260415T0418Z-260415T0515Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Northern Indiana 1218 AM EDT Wed Apr 15 2026 The National Weather Service in Northern Indiana has issued a * Special Marine Warning for... Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to mid-line of lake.... Michigan City IN to New Buffalo MI... New Buffalo MI to St Joseph MI... * Until 115 AM EDT. * At 1218 AM EDT, a cluster of thunderstorm was located 10 nm northwest of New Buffalo, or 13 nm north of Michigan City, moving east at 40 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... New Buffalo and Michigan City. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tornado Watch remains in effect until 400 AM EDT for northwestern Indiana...southwestern Michigan...and the adjacent waters of Lake Michigan. Frequent lightning is occurring with this storm. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects. && LAT...LON 4179 8696 4179 8697 4212 8696 4213 8657 4211 8649 4194 8658 4189 8662 4180 8675 4179 8676 4172 8691 TIME...MOT...LOC 0418Z 265DEG 62KT 4194 8684 HAIL...0.00IN WIND...>34KTS $$ MCS  832 WHUS53 KLOT 150428 SMWLOT LMZ740>745-777-779-150630- /O.NEW.KLOT.MA.W.0024.260415T0428Z-260415T0630Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Chicago/Romeoville 1128 PM CDT Tue Apr 14 2026 The National Weather Service in Chicago has issued a * Special Marine Warning for... Nearshore Waters from Winthrop Harbor to Calumet Harbor... Nearshore Waters from Calumet Harbor to Michigan City... Open Waters from Winthrop Harbor to Michigan City out to Mid Lake... * Until 130 AM CDT. * At 1127 PM CDT, strong thunderstorms were located along a line extending from near Waukegan Harbor to near Wilmette Harbor to near Midway Airport, moving east at 50 knots. HAZARD...Wind gusts 34 knots or greater and small hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... Harrison-Dever Crib, Wilmette Harbor, 31st Street Harbor, Monroe Harbor, Burns Harbor, Calumet Harbor, Winthrop Harbor, Indiana Harbor, Montrose Harbor, Waukegan Harbor, Burnham Harbor, and Hammond Marina. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4246 8702 4213 8696 4179 8697 4172 8692 4165 8711 4165 8714 4163 8716 4161 8732 4164 8743 4168 8743 4167 8747 4170 8751 4183 8760 4188 8762 4189 8760 4190 8762 4206 8767 4214 8775 4227 8783 4248 8780 TIME...MOT...LOC 0427Z 275DEG 48KT 4229 8786 4201 8772 4175 8783 HAIL...<.75IN WIND...>34KTS $$ Carlaw  882 WHUS53 KDTX 150436 SMWDTX LHZ441>443-462>464-150630- /O.NEW.KDTX.MA.W.0010.260415T0436Z-260415T0630Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Detroit/Pontiac MI 1236 AM EDT Wed Apr 15 2026 The National Weather Service in Detroit/Pontiac has issued a * Special Marine Warning for... Harbor Beach to Port Sanilac MI... Lake Huron from Harbor Beach to Port Sanilac 5NM Off Shore to US/Canadian border... Lake Huron from Port Austin to Harbor Beach 5NM Off Shore to the US/Canadian border... Lake Huron from Port Sanilac to Port Huron 5NM Off Shore to US/Canadian border... Port Austin to Harbor Beach MI... Port Sanilac to Port Huron MI... * Until 230 AM EDT. * At 1235 AM EDT, strong thunderstorms were located along a line extending from 17 nm east of Sebewaing to 12 nm west of Lexington, moving east at 40 knots. HAZARD...Wind gusts 34 knots or greater and small hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Strong thunderstorms will be near... Port Sanilac around 1245 AM EDT. Richmondville around 1250 AM EDT. White Rock around 1255 AM EDT. Harbor Beach around 100 AM EDT. Other locations impacted by strong thunderstorms include White Rock and Richmondville. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tornado Watch remains in effect until 400 AM EDT for southeastern Michigan...and the adjacent waters of Lake Huron. && LAT...LON 4302 8241 4301 8247 4322 8256 4377 8265 4403 8281 4398 8221 4359 8212 TIME...MOT...LOC 0435Z 249DEG 42KT 4367 8306 4332 8280 HAIL...<.75IN WIND...>34KTS $$ SF  578 WHUS53 KDTX 150457 SMWDTX LCZ422-423-460-150700- /O.NEW.KDTX.MA.W.0011.260415T0457Z-260415T0700Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Detroit/Pontiac MI 1257 AM EDT Wed Apr 15 2026 The National Weather Service in Detroit/Pontiac has issued a * Special Marine Warning for... Detroit River... Lake St. Clair Open Lake (U.S. Portion)... St. Clair River... * Until 300 AM EDT. * At 1256 AM EDT, strong thunderstorms were located along a line extending from 22 nm northwest of New Baltimore to 20 nm northwest of The Ambassador Bridge, moving southeast at 35 knots. HAZARD...Wind gusts to 40 knots and small hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Strong thunderstorms will be near... New Baltimore, St. Clair Shores, The Ambassador Bridge, and Wyandotte around 125 AM EDT. Mt Clemens Harbor Of Refuge, Metro Beach Metropark Marina, Grosse Pointe, and Belle Isle around 130 AM EDT. St Clair Flats Old Channel Light around 135 AM EDT. Algonac around 140 AM EDT. Other locations impacted by strong thunderstorms include Gibraltar. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tornado Watch remains in effect until 400 AM EDT for southeastern Michigan...the adjacent waters of Lake Erie...the adjacent waters of Lake Huron...and the adjacent waters of Lake St. Clair. && LAT...LON 4261 8252 4255 8259 4254 8266 4237 8283 4230 8309 4224 8313 4201 8314 4201 8315 4210 8324 4226 8317 4233 8311 4239 8295 4266 8285 4272 8269 4270 8261 4269 8260 4265 8255 4304 8248 4303 8243 TIME...MOT...LOC 0456Z 309DEG 34KT 4298 8306 4248 8347 HAIL...<.75IN WIND...40KTS $$ SF