####018005882#### WHUS73 KDTX 181830 MWWDTX URGENT - MARINE WEATHER MESSAGE National Weather Service Detroit/Pontiac MI 230 PM EDT Sat Oct 18 2025 LHZ421-422-441-442-191500- /O.CON.KDTX.SC.Y.0075.251019T1200Z-251019T1900Z/ /O.CON.KDTX.GL.W.0021.251019T1900Z-251020T0400Z/ Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay-Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI- 230 PM EDT Sat Oct 18 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 AM TO 3 PM EDT SUNDAY... ...GALE WARNING REMAINS IN EFFECT FROM 3 PM SUNDAY TO MIDNIGHT EDT SUNDAY NIGHT... * WHAT...During the Small Craft Advisory, expect sustained winds up to 26 knots from the south with gusts up to 32 knots. The largest significant waves will be 4 feet with a potential maximum wave height of 5 feet. During the Gale Warning, expect sustained winds up to 28 knots from the northwest with gusts up to 37 knots. The largest significant waves will be 7 feet with a potential maximum wave height of 10 feet. * WHERE...Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay, Port Austin to Harbor Beach MI and Harbor Beach to Port Sanilac MI. * WHEN...During the Small Craft Advisory, the maximum winds are expected around 10 AM EDT Sunday with the largest waves expected around 2 PM EDT Sunday. During the Gale Warning, the maximum winds are expected around 8 PM EDT Sunday with the largest waves expected around 11 PM EDT Sunday. During the Gale Watch, the maximum winds are expected around 8 PM EDT Sunday with the largest waves expected around 11 PM EDT Sunday. * IMPACTS...Strong winds will cause hazardous 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. && $$ LHZ361-362-191500- /O.CON.KDTX.GL.W.0021.251019T1800Z-251020T0600Z/ Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore- Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore- 230 PM EDT Sat Oct 18 2025 ...GALE WARNING REMAINS IN EFFECT FROM 2 PM SUNDAY TO 2 AM EDT MONDAY... * WHAT...Expect sustained winds up to 33 knots from the northwest with gusts up to 43 knots. The largest significant waves will be 12 feet with a potential maximum wave height of 17 feet. * WHERE...Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore and Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore. * WHEN...The maximum winds are expected around 7 PM EDT Sunday with the largest waves expected around 11 PM EDT Sunday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LHZ363-462-463-191500- /O.CON.KDTX.GL.W.0021.251019T1200Z-251020T0600Z/ Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore- Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore- Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore- 230 PM EDT Sat Oct 18 2025 ...GALE WARNING REMAINS IN EFFECT FROM 8 AM SUNDAY TO 2 AM EDT MONDAY... * WHAT...Expect sustained winds up to 31 knots from the southeast Sunday morning, becoming west Sunday afternoon with gusts up to 38 knots. The largest significant waves will be 11 feet with a potential maximum wave height of 16 feet. * WHERE...Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore, Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore and Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore. * WHEN...The maximum winds are expected around 3 PM EDT Sunday with the largest waves expected around 11 PM EDT Sunday. * IMPACTS...Strong winds will cause hazardous 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. && $$ LCZ460-LEZ444-LHZ443-191500- /O.CON.KDTX.SC.Y.0075.251019T0900Z-251020T0900Z/ Lake St Clair- Michigan Waters of Lake Erie from Detroit River to North Cape MI- Port Sanilac to Port Huron MI- 230 PM EDT Sat Oct 18 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 5 AM SUNDAY TO 5 AM EDT MONDAY... * WHAT...Expect sustained winds up to 27 knots from the southwest with gusts up to 32 knots. The largest significant waves will be 3 feet on Lake St. Clair and 4 feet with a potential maximum wave height of 5 feet on the Michigan Waters of Lake Erie and far southern Lake Huron. * WHERE...Lake St Clair. In Lake Erie, Michigan Waters of Lake Erie from Detroit River to North Cape MI. In Lake Huron, Port Sanilac to Port Huron MI. * WHEN...The maximum winds are expected around 9 AM EDT Sunday with the largest waves expected around 12 PM EDT Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$