814 WHUS53 KAPX 271400 SMWAPX LHZ349-363-271600- /O.NEW.KAPX.MA.W.0089.260727T1400Z-260727T1600Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Gaylord MI 1000 AM EDT Mon Jul 27 2026 The National Weather Service in Gaylord has issued a * Special Marine Warning for... Lake Huron from Sturgeon Point to Alabaster MI 5NM off shore to US/Canadian border... Sturgeon Pt to Alabaster MI... * Until noon EDT. * At 1000 AM EDT, a severe thunderstorm was located over Greenbush, moving east at 30 knots. HAZARD...Wind gusts to 40 knots and large hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. * Locations impacted include... Tawas Bay, East Tawas, Greenbush, Central Lake Huron Buoy, Au Sable Point, Oscoda, Tawas Point, and Harrisville. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor immediately as gusty winds and high waves are expected. && LAT...LON 4419 8360 4430 8356 4432 8345 4435 8339 4466 8334 4450 8233 4419 8225 4417 8226 4418 8290 TIME...MOT...LOC 1400Z 286DEG 28KT 4457 8337 HAIL...>.75IN WIND...40KTS $$ FEF 744 WHUS53 KAPX 271408 SMWAPX LHZ362-363-271545- /O.NEW.KAPX.MA.W.0090.260727T1408Z-260727T1545Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Gaylord MI 1008 AM EDT Mon Jul 27 2026 The National Weather Service in Gaylord has issued a * Special Marine Warning for... Lake Huron from Presque Isle Lt. to Sturgeon Point MI 5NM off shore to US/Canadian border... Lake Huron from Sturgeon Point to Alabaster MI 5NM off shore to US/Canadian border... * Until 1145 AM EDT. * At 1007 AM EDT, strong thunderstorms were located along a line extending from 8 nm northwest of Northern Lake Huron Buoy to 13 nm northeast of South Point to near Harrisville, moving southeast at 35 knots. HAZARD...Wind gusts 34 knots or greater and small hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... Northern Lake Huron Buoy. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4448 8232 4462 8321 4474 8319 4487 8321 4499 8312 4551 8291 4534 8252 TIME...MOT...LOC 1407Z 296DEG 33KT 4541 8292 4497 8305 4463 8326 HAIL...<.75IN WIND...>34KTS $$ msb 333 WHUS53 KGRB 271414 SMWGRB LMZ521-522-271445- /O.NEW.KGRB.MA.W.0046.260727T1414Z-260727T1445Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Green Bay WI 914 AM CDT Mon Jul 27 2026 The National Weather Service in Green Bay has issued a * Special Marine Warning for... Central and Southern Bay of Green Bay... * Until 945 AM CDT. * At 914 AM CDT, a severe thunderstorm was located 7 NM northeast of Bay Shore Park, moving east at 30 knots. HAZARD...Large hail and wind gusts to 40 knots. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. * The strong thunderstorm will be near... Sturgeon Bay and Sherwood Point Light around 940 AM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... Boaters should seek safe harbor immediately until this storm passes. Wind gusts 34 knots or greater, high waves, dangerous lightning, and heavy rain are possible with this storm. && LAT...LON 4464 8776 4479 8788 4493 8744 4488 8738 4483 8737 4482 8737 4488 8744 4488 8742 4489 8742 4489 8743 4486 8749 4486 8752 4482 8755 4482 8756 4483 8756 4483 8757 4485 8755 4484 8761 4472 8772 TIME...MOT...LOC 1413Z 257DEG 29KT 4474 8773 MAX HAIL SIZE...>.75 IN MAX WIND GUST...40 KTS $$ KS 623 WHUS53 KGRB 271434 SMWGRB LMZ541-542-563-565-271530- /O.NEW.KGRB.MA.W.0047.260727T1434Z-260727T1530Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Green Bay WI 934 AM CDT Mon Jul 27 2026 The National Weather Service in Green Bay has issued a * Special Marine Warning for... Nearshore waters from Washington Island to Two Rivers... Open waters of Lake Michigan from Rock Island Passage to Two Rivers... * Until 1030 AM CDT. * At 934 AM CDT, a severe thunderstorm was located 7 NM north of Algoma, or 7 NM southwest of Sturgeon Bay, moving east at 30 knots. HAZARD...Large hail and wind gusts in excess of 50 knots. SOURCE...Radar indicated. IMPACT...Boats could suffer significant structural damage in high winds and hail. Small craft could capsize in suddenly higher waves. * The strong thunderstorm will be near... Algoma around 935 AM CDT. Sturgeon Bay Ship Canal Light and Sturgeon Bay around 950 AM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. Boaters should seek safe harbor immediately until this storm passes. Wind gusts 34 knots or greater, high waves, dangerous lightning, and heavy rain are possible with this storm. && LAT...LON 4455 8747 4461 8744 4464 8739 4479 8731 4482 8737 4483 8737 4483 8735 4480 8731 4481 8728 4485 8727 4488 8720 4490 8722 4496 8702 4452 8709 TIME...MOT...LOC 1434Z 261DEG 28KT 4472 8747 MAX HAIL SIZE...>.75 IN MAX WIND GUST...>50 KTS $$ KS 712 WHUS53 KGRR 271441 SMWGRR LMZ847-870-872-271545- /O.NEW.KGRR.MA.W.0056.260727T1441Z-260727T1545Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Grand Rapids MI 1041 AM EDT Mon Jul 27 2026 The National Weather Service in Grand Rapids has issued a * Special Marine Warning for... Nearshore Waters from Grand Haven to Whitehall MI... Open Waters from Grand Haven to Pentwater MI... * Until 1145 AM EDT. * At 1040 AM EDT, a strong thunderstorm was located 23 nm southwest of Little Sable Point Light, moving southeast at 25 knots. HAZARD...Wind gusts to 40 knots. SOURCE...Ship. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * The strong thunderstorm will remain over mainly open waters. LAT...LON 4358 8704 4342 8653 4341 8653 4340 8646 4307 8627 4306 8708 4343 8715 TIME...MOT...LOC 1440Z 307DEG 23KT 4346 8702 HAIL...0.00IN WIND...40KTS $$ 04 788 WHUS53 KGRB 271451 SMWGRB LMZ541-542-563-565-271545- /O.NEW.KGRB.MA.W.0048.260727T1451Z-260727T1545Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Green Bay WI 951 AM CDT Mon Jul 27 2026 The National Weather Service in Green Bay has issued a * Special Marine Warning for... Nearshore waters from Washington Island to Two Rivers... Open waters of Lake Michigan from Rock Island Passage to Two Rivers... * Until 1045 AM CDT. * At 951 AM CDT, severe thunderstorms were located along a line from over Whitefish Point to 14 NM southeast of Algoma, or along a line from over Whitefish Point to 15 NM east of Kewaunee Pierhead Light, moving east at 45 knots. HAZARD...Large hail and wind gusts in excess of 50 knots. SOURCE...Radar indicated. IMPACT...Boats could suffer significant structural damage in high winds and hail. Small craft could capsize in suddenly higher waves. * The strong thunderstorm will be near... Whitefish Point around 955 AM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. Move to safe harbor immediately as gusty winds and high waves are expected. && LAT...LON 4464 8728 4481 8729 4485 8727 4488 8720 4490 8722 4493 8717 4495 8719 4513 8644 4488 8669 4421 8697 4440 8752 TIME...MOT...LOC 1451Z 261DEG 45KT 4485 8715 4466 8714 4451 8714 MAX HAIL SIZE...>.75 IN MAX WIND GUST...>50 KTS $$ KS