575 WHUS53 KAPX 181905 SMWAPX LHZ347-348-361-362-182000- /O.NEW.KAPX.MA.W.0017.260518T1905Z-260518T2000Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Gaylord MI 305 PM EDT Mon May 18 2026 The National Weather Service in Gaylord has issued a * Special Marine Warning for... 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island... Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt to the US/Canadian border beyond 5 NM from shore... Lake Huron from Presque Isle Lt. to Sturgeon Point MI 5NM off shore to US/Canadian border... Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary... * Until 400 PM EDT. * At 305 PM EDT, a strong thunderstorm was located 10 nm northeast of Adams Point, moving northeast at 60 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. * Locations impacted include... Rogers City, Middle Island, Observatory Point, Presque Isle Light, Adams Point, Northern Lake Huron Buoy, and Forty Mile Point. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4509 8344 4512 8338 4529 8349 4531 8361 4537 8373 4538 8384 4544 8393 4545 8405 4549 8414 4580 8353 4534 8252 4524 8250 TIME...MOT...LOC 1905Z 232DEG 61KT 4556 8357 HAIL...<.75IN WIND...40KTS $$ ELD  615 WHUS53 KDTX 181942 SMWDTX LHZ421-441-462-182115- /O.NEW.KDTX.MA.W.0024.260518T1942Z-260518T2115Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Detroit/Pontiac MI 342 PM EDT Mon May 18 2026 The National Weather Service in Detroit/Pontiac has issued a * Special Marine Warning for... Lake Huron from Port Austin to Harbor Beach 5NM Off Shore to the US/Canadian border... Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay... Port Austin to Harbor Beach MI... * Until 515 PM EDT. * At 342 PM EDT, a strong thunderstorm was located near Port Hope, moving northeast at 40 knots. HAZARD...Wind gusts to nearly 50 knots and small hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * The strong thunderstorm will be near... Port Hope around 345 PM EDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... && LAT...LON 4417 8225 4414 8225 4381 8268 4398 8279 4404 8291 4397 8306 4395 8322 4396 8324 4418 8308 TIME...MOT...LOC 1942Z 215DEG 42KT 4392 8287 HAIL...<.75IN WIND...49KTS $$ DRK  188 WHUS53 KAPX 181951 SMWAPX LHZ348-362-182045- /O.NEW.KAPX.MA.W.0018.260518T1951Z-260518T2045Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Gaylord MI 351 PM EDT Mon May 18 2026 The National Weather Service in Gaylord has issued a * Special Marine Warning for... Lake Huron from Presque Isle Lt. to Sturgeon Point MI 5NM off shore to US/Canadian border... Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary... * Until 445 PM EDT. * At 351 PM EDT, a strong thunderstorm was located near Presque Isle Light, moving northeast at 50 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. * Locations impacted include... Thunder Bay, Middle Island, Alpena, Northern Lake Huron Buoy, and Presque Isle Light. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4489 8344 4504 8351 4508 8348 4512 8338 4522 8347 4528 8348 4531 8356 4535 8352 4534 8349 4542 8343 4540 8342 4562 8315 4534 8252 4490 8242 4489 8242 TIME...MOT...LOC 1951Z 231DEG 49KT 4526 8344 HAIL...<.75IN WIND...40KTS $$ ELD  633 WHUS53 KDTX 181959 SMWDTX LHZ421-422-182130- /O.NEW.KDTX.MA.W.0025.260518T1959Z-260518T2130Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Detroit/Pontiac MI 359 PM EDT Mon May 18 2026 The National Weather Service in Detroit/Pontiac has issued a * Special Marine Warning for... Inner Saginaw Bay SW of Point Au Gres to Bay Port MI... Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay... * Until 530 PM EDT. * At 359 PM EDT, severe thunderstorms were located along a line extending from 30 nm west of Pinconning to 18 nm southwest of Linwood to 28 nm southwest of Quanicassee, moving northeast at 50 knots. HAZARD...Wind gusts in excess of 50 knots and small hail. SOURCE...Radar. IMPACT...Boats could suffer significant structural damage in high winds. Small craft could capsize in suddenly higher waves. * Severe thunderstorms will be near... Bay City Liberty Harbor and The Mouth Of The Saginaw River around 415 PM EDT. Pinconning and Quanicassee around 420 PM EDT. Sebewaing around 435 PM EDT. Gravelly Shoals around 440 PM EDT. Bay Port around 445 PM EDT. Caseville around 450 PM EDT. Port Austin around 505 PM EDT. Other locations impacted by severe thunderstorms include Bay Port. PRECAUTIONARY/PREPAREDNESS ACTIONS... && LAT...LON 4391 8396 4392 8389 4399 8384 4398 8376 4400 8373 4399 8368 4402 8369 4405 8366 4405 8358 4419 8356 4418 8300 4400 8299 4397 8306 4395 8324 4369 8346 4367 8354 4355 8367 4365 8394 4368 8396 TIME...MOT...LOC 1959Z 228DEG 52KT 4370 8464 4348 8421 4320 8405 HAIL...<.75IN WIND...50KTS $$ DRK