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Home Return to list Small Craft Advisory 0128 Issued by the Gaylord Forecast Office
Action: New Issued At: 2025-12-17 10:48:46 129 WHUS73 KAPX 171648 MWWAPX URGENT - MARINE WEATHER MESSAGE National Weather Service Gaylord MI 1148 AM EST Wed Dec 17 2025 LHZ345>348-180100- /O.CAN.KAPX.GL.W.0035.000000T0000Z-251217T1700Z/ /O.NEW.KAPX.SC.Y.0128.251218T0500Z-251219T1500Z/ Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island-St Ignace to False Detour Channel- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary- 1148 AM EST Wed Dec 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EST FRIDAY... * WHAT...Highest gusts up to 30 kts from the southwest and highest waves around 10 feet expected. * WHERE...Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island, St Ignace to False Detour Channel, 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island and Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary. * WHEN...From midnight tonight to 10 AM EST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ323-341-342-344>346-180100- /O.CAN.KAPX.SC.Y.0127.000000T0000Z-251217T1700Z/ /O.CON.KAPX.GL.W.0036.251218T0500Z-251219T1500Z/ Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI-Seul Choix Point to 5NM West of Mackinac Bridge- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- Manistee to Point Betsie MI- 1148 AM EST Wed Dec 17 2025 ...GALE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EST FRIDAY... * WHAT...Highest gusts up to 40 kts from the southwest and highest waves around 12 feet expected. * WHERE...Portions of Lake Michigan. * WHEN...From midnight tonight to 10 AM EST Friday. * IMPACTS...Strong winds will cause hazardous highest waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LHZ349-LSZ321-322-180100- /O.NEW.KAPX.SC.Y.0128.251218T0500Z-251219T1500Z/ Sturgeon Pt to Alabaster MI- Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- St. Marys River Point Iroquois to E. Potagannissing Bay- 1148 AM EST Wed Dec 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EST FRIDAY... * WHAT...Highest gusts up to 30 kts from the south and highest waves around 9 feet expected. * WHERE...In Lake Huron, Sturgeon Pt to Alabaster MI. In Lake Superior, Whitefish Bay (U. S. Portion)/Whitefish Point to Point Iroquois MI and St. Marys River Point Iroquois to E. Potagannissing Bay. * WHEN...From midnight tonight to 10 AM EST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: New Issued At: 2025-12-17 10:48:46 129 WHUS73 KAPX 171648 MWWAPX URGENT - MARINE WEATHER MESSAGE National Weather Service Gaylord MI 1148 AM EST Wed Dec 17 2025 LHZ345>348-180100- /O.CAN.KAPX.GL.W.0035.000000T0000Z-251217T1700Z/ /O.NEW.KAPX.SC.Y.0128.251218T0500Z-251219T1500Z/ Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island-St Ignace to False Detour Channel- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary- 1148 AM EST Wed Dec 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EST FRIDAY... * WHAT...Highest gusts up to 30 kts from the southwest and highest waves around 10 feet expected. * WHERE...Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island, St Ignace to False Detour Channel, 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island and Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary. * WHEN...From midnight tonight to 10 AM EST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ323-341-342-344>346-180100- /O.CAN.KAPX.SC.Y.0127.000000T0000Z-251217T1700Z/ /O.CON.KAPX.GL.W.0036.251218T0500Z-251219T1500Z/ Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI-Seul Choix Point to 5NM West of Mackinac Bridge- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- Manistee to Point Betsie MI- 1148 AM EST Wed Dec 17 2025 ...GALE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EST FRIDAY... * WHAT...Highest gusts up to 40 kts from the southwest and highest waves around 12 feet expected. * WHERE...Portions of Lake Michigan. * WHEN...From midnight tonight to 10 AM EST Friday. * IMPACTS...Strong winds will cause hazardous highest waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LHZ349-LSZ321-322-180100- /O.NEW.KAPX.SC.Y.0128.251218T0500Z-251219T1500Z/ Sturgeon Pt to Alabaster MI- Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- St. Marys River Point Iroquois to E. Potagannissing Bay- 1148 AM EST Wed Dec 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EST FRIDAY... * WHAT...Highest gusts up to 30 kts from the south and highest waves around 9 feet expected. * WHERE...In Lake Huron, Sturgeon Pt to Alabaster MI. In Lake Superior, Whitefish Bay (U. S. Portion)/Whitefish Point to Point Iroquois MI and St. Marys River Point Iroquois to E. Potagannissing Bay. * WHEN...From midnight tonight to 10 AM EST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-17 14:04:21 499 WHUS73 KAPX 172003 MWWAPX URGENT - MARINE WEATHER MESSAGE National Weather Service Gaylord MI 303 PM EST Wed Dec 17 2025 LMZ323-341-342-344>346-180415- /O.CON.KAPX.GL.W.0036.251218T0500Z-251219T1500Z/ Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI-Seul Choix Point to 5NM West of Mackinac Bridge- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- Manistee to Point Betsie MI- 303 PM EST Wed Dec 17 2025 ...GALE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EST FRIDAY... * WHAT...Highest gusts up to 45 kts from the southwest and highest waves around 11 feet expected. * WHERE...Portions of Lake Michigan. * WHEN...From midnight tonight to 10 AM EST Friday. * IMPACTS...Strong winds will cause hazardous highest waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LHZ345>349-LSZ321-322-180415- /O.CON.KAPX.SC.Y.0128.251218T0500Z-251219T1500Z/ Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island-St Ignace to False Detour Channel- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary-Sturgeon Pt to Alabaster MI- Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- St. Marys River Point Iroquois to E. Potagannissing Bay- 303 PM EST Wed Dec 17 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EST FRIDAY... * WHAT...Highest gusts up to 35 kts from the southwest and highest waves around 11 feet expected. * WHERE...Portions of Lake Huron and Lake Superior. * WHEN...From midnight tonight to 10 AM EST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-17 21:35:31 906 WHUS73 KAPX 180335 MWWAPX URGENT - MARINE WEATHER MESSAGE National Weather Service Gaylord MI 1035 PM EST Wed Dec 17 2025 LMZ323-341-342-344>346-181415- /O.CON.KAPX.GL.W.0036.251218T0500Z-251219T1500Z/ Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI-Seul Choix Point to 5NM West of Mackinac Bridge- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- Manistee to Point Betsie MI- 1035 PM EST Wed Dec 17 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM EST FRIDAY... * WHAT...Highest gusts up to 40 kts from the southwest and highest waves around 13 feet expected. * WHERE...Portions of Lake Michigan. * WHEN...Until 10 AM EST Friday. * IMPACTS...Strong winds will cause hazardous highest waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LHZ345>349-LSZ321-322-181415- /O.CON.KAPX.SC.Y.0128.251218T0500Z-251219T1500Z/ Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island-St Ignace to False Detour Channel- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary-Sturgeon Pt to Alabaster MI- Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- St. Marys River Point Iroquois to E. Potagannissing Bay- 1035 PM EST Wed Dec 17 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST FRIDAY... * WHAT...Highest gusts up to 35 kts from the south and highest waves around 10 feet expected. * WHERE...Portions of Lake Huron and Lake Superior. * WHEN...Until 10 AM EST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-18 01:03:36 495 WHUS73 KAPX 180703 MWWAPX URGENT - MARINE WEATHER MESSAGE National Weather Service Gaylord MI 203 AM EST Thu Dec 18 2025 LMZ323-341-342-344>346-181845- /O.CON.KAPX.GL.W.0036.000000T0000Z-251219T1500Z/ Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI-Seul Choix Point to 5NM West of Mackinac Bridge- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- Manistee to Point Betsie MI- 203 AM EST Thu Dec 18 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM EST FRIDAY... * WHAT...Highest gusts up to 40 kts from the southwest and highest waves around 12 feet. * WHERE...Portions of Lake Michigan. * WHEN...Until 10 AM EST Friday. * IMPACTS...Strong winds will cause hazardous highest waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LHZ345>349-LSZ321-322-181845- /O.CON.KAPX.SC.Y.0128.000000T0000Z-251219T1500Z/ Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island-St Ignace to False Detour Channel- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary-Sturgeon Pt to Alabaster MI- Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- St. Marys River Point Iroquois to E. Potagannissing Bay- 203 AM EST Thu Dec 18 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST FRIDAY... * WHAT...Highest gusts up to 35 kts from the southwest and highest waves around 10 feet. * WHERE...Portions of Lake Huron and Lake Superior. * WHEN...Until 10 AM EST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Time Extended Issued At: 2025-12-18 09:19:44 567 WHUS73 KAPX 181519 MWWAPX URGENT - MARINE WEATHER MESSAGE National Weather Service Gaylord MI 1019 AM EST Thu Dec 18 2025 LHZ345>349-182330- /O.EXT.KAPX.SC.Y.0128.000000T0000Z-251219T0400Z/ /O.EXB.KAPX.GL.W.0036.251219T0400Z-251220T0000Z/ Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island-St Ignace to False Detour Channel- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary-Sturgeon Pt to Alabaster MI- 1019 AM EST Thu Dec 18 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 11 PM EST THIS EVENING... ...GALE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 7 PM EST FRIDAY... * WHAT...For the Small Craft Advisory, Highest gusts up to 35 kts from the south and highest waves around 11 feet. For the Gale Warning, Highest gusts up to 40 kts from the west and highest waves around 11 feet expected. * WHERE...Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island, St Ignace to False Detour Channel, 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island, Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary and Sturgeon Pt to Alabaster MI. * WHEN...For the Small Craft Advisory, until 11 PM EST this evening. For the Gale Warning, from 11 PM this evening to 7 PM EST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LSZ321-322-182330- /O.EXT.KAPX.SC.Y.0128.000000T0000Z-251219T0400Z/ /O.EXB.KAPX.GL.W.0036.251219T0400Z-251219T1700Z/ Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- St. Marys River Point Iroquois to E. Potagannissing Bay- 1019 AM EST Thu Dec 18 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 11 PM EST THIS EVENING... ...GALE WARNING IN EFFECT FROM 11 PM THIS EVENING TO NOON EST FRIDAY... * WHAT...For the Small Craft Advisory, Highest gusts up to 30 kts from the south and highest waves around 5 feet. For the Gale Warning, Highest gusts up to 35 kts from the northwest and highest waves around 10 feet expected. * WHERE...Whitefish Bay (U. S. Portion)/Whitefish Point to Point Iroquois MI and St. Marys River Point Iroquois to E. Potagannissing Bay. * WHEN...For the Small Craft Advisory, until 11 PM EST this evening. For the Gale Warning, from 11 PM this evening to noon EST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ323-341-342-344>346-182330- /O.CON.KAPX.GL.W.0036.000000T0000Z-251219T1500Z/ Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI-Seul Choix Point to 5NM West of Mackinac Bridge- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- Manistee to Point Betsie MI- 1019 AM EST Thu Dec 18 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM EST FRIDAY... * WHAT...Highest gusts up to 40 kts from the southwest and highest waves around 12 feet. * WHERE...Portions of Lake Michigan. * WHEN...Until 10 AM EST Friday. * IMPACTS...Strong winds will cause hazardous highest waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Time Extended Issued At: 2025-12-18 09:19:44 567 WHUS73 KAPX 181519 MWWAPX URGENT - MARINE WEATHER MESSAGE National Weather Service Gaylord MI 1019 AM EST Thu Dec 18 2025 LHZ345>349-182330- /O.EXT.KAPX.SC.Y.0128.000000T0000Z-251219T0400Z/ /O.EXB.KAPX.GL.W.0036.251219T0400Z-251220T0000Z/ Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island-St Ignace to False Detour Channel- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary-Sturgeon Pt to Alabaster MI- 1019 AM EST Thu Dec 18 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 11 PM EST THIS EVENING... ...GALE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 7 PM EST FRIDAY... * WHAT...For the Small Craft Advisory, Highest gusts up to 35 kts from the south and highest waves around 11 feet. For the Gale Warning, Highest gusts up to 40 kts from the west and highest waves around 11 feet expected. * WHERE...Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island, St Ignace to False Detour Channel, 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island, Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary and Sturgeon Pt to Alabaster MI. * WHEN...For the Small Craft Advisory, until 11 PM EST this evening. For the Gale Warning, from 11 PM this evening to 7 PM EST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LSZ321-322-182330- /O.EXT.KAPX.SC.Y.0128.000000T0000Z-251219T0400Z/ /O.EXB.KAPX.GL.W.0036.251219T0400Z-251219T1700Z/ Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- St. Marys River Point Iroquois to E. Potagannissing Bay- 1019 AM EST Thu Dec 18 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 11 PM EST THIS EVENING... ...GALE WARNING IN EFFECT FROM 11 PM THIS EVENING TO NOON EST FRIDAY... * WHAT...For the Small Craft Advisory, Highest gusts up to 30 kts from the south and highest waves around 5 feet. For the Gale Warning, Highest gusts up to 35 kts from the northwest and highest waves around 10 feet expected. * WHERE...Whitefish Bay (U. S. Portion)/Whitefish Point to Point Iroquois MI and St. Marys River Point Iroquois to E. Potagannissing Bay. * WHEN...For the Small Craft Advisory, until 11 PM EST this evening. For the Gale Warning, from 11 PM this evening to noon EST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ323-341-342-344>346-182330- /O.CON.KAPX.GL.W.0036.000000T0000Z-251219T1500Z/ Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI-Seul Choix Point to 5NM West of Mackinac Bridge- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- Manistee to Point Betsie MI- 1019 AM EST Thu Dec 18 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM EST FRIDAY... * WHAT...Highest gusts up to 40 kts from the southwest and highest waves around 12 feet. * WHERE...Portions of Lake Michigan. * WHEN...Until 10 AM EST Friday. * IMPACTS...Strong winds will cause hazardous highest waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2025-12-18 13:48:51 045 WHUS73 KAPX 181948 MWWAPX URGENT - MARINE WEATHER MESSAGE National Weather Service Gaylord MI 248 PM EST Thu Dec 18 2025 LHZ345>349-190400- /O.CON.KAPX.SC.Y.0128.000000T0000Z-251219T0400Z/ /O.CON.KAPX.GL.W.0036.251219T0400Z-251220T0000Z/ Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island-St Ignace to False Detour Channel- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary-Sturgeon Pt to Alabaster MI- 248 PM EST Thu Dec 18 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM EST THIS EVENING... ...GALE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 7 PM EST FRIDAY... * WHAT...For the Small Craft Advisory, Highest gusts up to 35 kts from the south and highest waves around 11 feet. For the Gale Warning, Highest gusts up to 40 kts from the west and highest waves around 11 feet expected. * WHERE...Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island, St Ignace to False Detour Channel, 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island, Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary and Sturgeon Pt to Alabaster MI. * WHEN...For the Small Craft Advisory, until 11 PM EST this evening. For the Gale Warning, from 11 PM this evening to 7 PM EST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LSZ321-322-190400- /O.CON.KAPX.SC.Y.0128.000000T0000Z-251219T0400Z/ /O.CON.KAPX.GL.W.0036.251219T0400Z-251219T1700Z/ Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- St. Marys River Point Iroquois to E. Potagannissing Bay- 248 PM EST Thu Dec 18 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM EST THIS EVENING... ...GALE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO NOON EST FRIDAY... * WHAT...For the Small Craft Advisory, Highest gusts up to 30 kts from the south and highest waves around 5 feet. For the Gale Warning, Highest gusts up to 35 kts from the northwest and highest waves around 10 feet expected. * WHERE...Whitefish Bay (U. S. Portion)/Whitefish Point to Point Iroquois MI and St. Marys River Point Iroquois to E. Potagannissing Bay. * WHEN...For the Small Craft Advisory, until 11 PM EST this evening. For the Gale Warning, from 11 PM this evening to noon EST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ323-341-342-344>346-190400- /O.CON.KAPX.GL.W.0036.000000T0000Z-251219T1500Z/ Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI-Seul Choix Point to 5NM West of Mackinac Bridge- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- Manistee to Point Betsie MI- 248 PM EST Thu Dec 18 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM EST FRIDAY... * WHAT...Highest gusts up to 40 kts from the southwest and highest waves around 12 feet. * WHERE...Portions of Lake Michigan. * WHEN...Until 10 AM EST Friday. * IMPACTS...Strong winds will cause hazardous highest waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2025-12-18 13:48:51 045 WHUS73 KAPX 181948 MWWAPX URGENT - MARINE WEATHER MESSAGE National Weather Service Gaylord MI 248 PM EST Thu Dec 18 2025 LHZ345>349-190400- /O.CON.KAPX.SC.Y.0128.000000T0000Z-251219T0400Z/ /O.CON.KAPX.GL.W.0036.251219T0400Z-251220T0000Z/ Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island-St Ignace to False Detour Channel- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary-Sturgeon Pt to Alabaster MI- 248 PM EST Thu Dec 18 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM EST THIS EVENING... ...GALE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 7 PM EST FRIDAY... * WHAT...For the Small Craft Advisory, Highest gusts up to 35 kts from the south and highest waves around 11 feet. For the Gale Warning, Highest gusts up to 40 kts from the west and highest waves around 11 feet expected. * WHERE...Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island, St Ignace to False Detour Channel, 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island, Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary and Sturgeon Pt to Alabaster MI. * WHEN...For the Small Craft Advisory, until 11 PM EST this evening. For the Gale Warning, from 11 PM this evening to 7 PM EST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LSZ321-322-190400- /O.CON.KAPX.SC.Y.0128.000000T0000Z-251219T0400Z/ /O.CON.KAPX.GL.W.0036.251219T0400Z-251219T1700Z/ Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- St. Marys River Point Iroquois to E. Potagannissing Bay- 248 PM EST Thu Dec 18 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM EST THIS EVENING... ...GALE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO NOON EST FRIDAY... * WHAT...For the Small Craft Advisory, Highest gusts up to 30 kts from the south and highest waves around 5 feet. For the Gale Warning, Highest gusts up to 35 kts from the northwest and highest waves around 10 feet expected. * WHERE...Whitefish Bay (U. S. Portion)/Whitefish Point to Point Iroquois MI and St. Marys River Point Iroquois to E. Potagannissing Bay. * WHEN...For the Small Craft Advisory, until 11 PM EST this evening. For the Gale Warning, from 11 PM this evening to noon EST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ323-341-342-344>346-190400- /O.CON.KAPX.GL.W.0036.000000T0000Z-251219T1500Z/ Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI-Seul Choix Point to 5NM West of Mackinac Bridge- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- Manistee to Point Betsie MI- 248 PM EST Thu Dec 18 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM EST FRIDAY... * WHAT...Highest gusts up to 40 kts from the southwest and highest waves around 12 feet. * WHERE...Portions of Lake Michigan. * WHEN...Until 10 AM EST Friday. * IMPACTS...Strong winds will cause hazardous highest waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Expired Issued At: 2025-12-18 22:03:33 477 WHUS73 KAPX 190402 MWWAPX URGENT - MARINE WEATHER MESSAGE National Weather Service Gaylord MI 1102 PM EST Thu Dec 18 2025 LHZ345>349-191430- /O.EXP.KAPX.SC.Y.0128.000000T0000Z-251219T0400Z/ /O.CON.KAPX.GL.W.0036.000000T0000Z-251220T0000Z/ Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island-St Ignace to False Detour Channel- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary-Sturgeon Pt to Alabaster MI- 1102 PM EST Thu Dec 18 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST FRIDAY... ...SMALL CRAFT ADVISORY HAS EXPIRED... * WHAT...Highest gusts up to 45 kts from the west and highest waves around 10 feet. * WHERE...Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island, St Ignace to False Detour Channel, 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island, Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary and Sturgeon Pt to Alabaster MI. * WHEN...Until 7 PM EST Friday. * IMPACTS...Strong winds will cause hazardous highest waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LSZ321-322-191430- /O.EXP.KAPX.SC.Y.0128.000000T0000Z-251219T0400Z/ /O.CON.KAPX.GL.W.0036.000000T0000Z-251219T1700Z/ Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- St. Marys River Point Iroquois to E. Potagannissing Bay- 1102 PM EST Thu Dec 18 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL NOON EST FRIDAY... ...SMALL CRAFT ADVISORY HAS EXPIRED... * WHAT...Highest gusts up to 40 kts from the west and highest waves around 9 feet. * WHERE...Whitefish Bay (U. S. Portion)/Whitefish Point to Point Iroquois MI and St. Marys River Point Iroquois to E. Potagannissing Bay. * WHEN...Until noon EST Friday. * IMPACTS...Strong winds will cause hazardous highest waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ323-341-342-344>346-191430- /O.CON.KAPX.GL.W.0036.000000T0000Z-251219T1500Z/ Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI-Seul Choix Point to 5NM West of Mackinac Bridge- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- Manistee to Point Betsie MI- 1102 PM EST Thu Dec 18 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM EST FRIDAY... * WHAT...Highest gusts up to 40 kts from the west and highest waves around 11 feet. * WHERE...Portions of Lake Michigan. * WHEN...Until 10 AM EST Friday. * IMPACTS...Strong winds will cause hazardous highest waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Expired Issued At: 2025-12-18 22:03:33 477 WHUS73 KAPX 190402 MWWAPX URGENT - MARINE WEATHER MESSAGE National Weather Service Gaylord MI 1102 PM EST Thu Dec 18 2025 LHZ345>349-191430- /O.EXP.KAPX.SC.Y.0128.000000T0000Z-251219T0400Z/ /O.CON.KAPX.GL.W.0036.000000T0000Z-251220T0000Z/ Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island-St Ignace to False Detour Channel- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary-Sturgeon Pt to Alabaster MI- 1102 PM EST Thu Dec 18 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST FRIDAY... ...SMALL CRAFT ADVISORY HAS EXPIRED... * WHAT...Highest gusts up to 45 kts from the west and highest waves around 10 feet. * WHERE...Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island, St Ignace to False Detour Channel, 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island, Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary and Sturgeon Pt to Alabaster MI. * WHEN...Until 7 PM EST Friday. * IMPACTS...Strong winds will cause hazardous highest waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LSZ321-322-191430- /O.EXP.KAPX.SC.Y.0128.000000T0000Z-251219T0400Z/ /O.CON.KAPX.GL.W.0036.000000T0000Z-251219T1700Z/ Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- St. Marys River Point Iroquois to E. Potagannissing Bay- 1102 PM EST Thu Dec 18 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL NOON EST FRIDAY... ...SMALL CRAFT ADVISORY HAS EXPIRED... * WHAT...Highest gusts up to 40 kts from the west and highest waves around 9 feet. * WHERE...Whitefish Bay (U. S. Portion)/Whitefish Point to Point Iroquois MI and St. Marys River Point Iroquois to E. Potagannissing Bay. * WHEN...Until noon EST Friday. * IMPACTS...Strong winds will cause hazardous highest waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ323-341-342-344>346-191430- /O.CON.KAPX.GL.W.0036.000000T0000Z-251219T1500Z/ Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI-Seul Choix Point to 5NM West of Mackinac Bridge- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- Manistee to Point Betsie MI- 1102 PM EST Thu Dec 18 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM EST FRIDAY... * WHAT...Highest gusts up to 40 kts from the west and highest waves around 11 feet. * WHERE...Portions of Lake Michigan. * WHEN...Until 10 AM EST Friday. * IMPACTS...Strong winds will cause hazardous highest waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||