863 FZUS63 KDTX 171946 GLFLH Open Lake Forecast for Lake Huron National Weather Service Detroit/Pontiac MI 346 PM EDT Fri Apr 17 2026 For waters beyond five nautical miles off shore on Lake Huron Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. .SYNOPSIS...Some areas of fog this evening into early tonight mainly over the northern half of Lake Huron. Low pressure, 29.30 inches, lifting into northern Ontario drags a respectable cold front through the central Great Lakes Saturday supporting another round of showers and storms. Colder air filters into the region the rest of the weekend maintaining moderate to strong northwesterly winds. LHZ361>363-180400- 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- Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore- 346 PM EDT Fri Apr 17 2026 .TONIGHT...Southeast winds 10 to 15 knots increasing to 20 to 25 knots with gusts to around 30 knots. Areas of fog in the evening. A chance of showers after midnight. Waves 5 to 7 feet building to 8 to 12 feet early in the morning. Waves occasionally around 15 feet. .SATURDAY...South winds 20 to 25 knots with gusts to around 30 knots decreasing to 15 to 20 knots with gusts to around 30 knots late in the morning...then veering to the southwest early in the afternoon veering to the west late in the afternoon. Showers likely in the morning. Waves 8 to 12 feet. Waves occasionally around 15 feet. .SATURDAY NIGHT...Northwest winds 10 to 15 knots. Waves 6 to 9 feet. Waves occasionally around 12 feet. .SUNDAY...West winds 10 to 15 knots becoming northwest 20 to 25 knots with gusts to around 30 knots. Waves 6 to 9 feet. Waves occasionally around 12 feet. .SUNDAY NIGHT...Northwest winds 20 to 25 knots with gusts to around 30 knots decreasing to 15 to 20 knots after midnight. Waves 8 to 12 feet. Waves occasionally around 15 feet. .MONDAY...Northwest winds 10 to 15 knots becoming west 5 to 10 knots late in the morning...then becoming southwest 10 to 15 knots late in the afternoon becoming south 15 to 20 knots with gusts to around 30 knots late in the evening. Waves 4 to 6 feet subsiding to 2 to 4 feet late in the afternoon...then building to 6 to 9 feet late in the evening. Waves occasionally around 12 feet. .TUESDAY...South winds 20 to 25 knots with gusts to around 30 knots becoming southwest 15 to 20 knots with gusts to around 30 knots in the late morning and early afternoon...then decreasing to 10 to 15 knots early in the evening veering to the northwest by midnight. Waves 8 to 12 feet subsiding to 4 to 6 feet by midnight. Waves occasionally around 15 feet. .WEDNESDAY...North winds 10 to 15 knots becoming northeast 5 to 10 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet . $$ LHZ462>464-180400- Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore- Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore- Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore- 346 PM EDT Fri Apr 17 2026 .TONIGHT...Southeast winds 10 to 15 knots increasing to 20 to 25 knots with gusts to around 30 knots. Patchy fog in the evening. A chance of showers and thunderstorms after midnight. Waves 1 to 3 feet building to 5 to 7 feet. Waves occasionally around 10 feet. .SATURDAY...South winds 20 to 25 knots with gusts to around 30 knots decreasing to 15 to 20 knots in the late morning and early afternoon...then becoming west 10 to 15 knots late in the afternoon. Showers likely and a chance of thunderstorms in the morning...then a chance of showers in the afternoon. Waves 5 to 7 feet. Waves occasionally around 10 feet. .SATURDAY NIGHT...West winds 10 to 15 knots. Waves 3 to 5 feet. .SUNDAY...West winds 10 to 15 knots. A chance of snow showers in the afternoon. Waves 4 to 6 feet. Waves occasionally around 8 feet. .SUNDAY NIGHT...North winds 15 to 20 knots. Waves 6 to 9 feet. Waves occasionally around 12 feet. .MONDAY...Northwest winds 10 to 15 knots decreasing to 5 to 10 knots late in the morning...then veering to the northeast late in the afternoon becoming south 15 to 20 knots late in the evening. Waves 4 to 6 feet subsiding to 1 to 3 feet late in the afternoon...then building to 4 to 6 feet late in the evening. Waves occasionally around 8 feet. .TUESDAY...South winds 20 to 25 knots with gusts to around 30 knots decreasing to 15 to 20 knots in the late morning and early afternoon...then becoming southwest 10 to 15 knots early in the evening veering to the northwest by midnight. Waves 5 to 7 feet subsiding to 2 to 4 feet by midnight. Waves occasionally around 10 feet. .WEDNESDAY...North winds 10 to 15 knots decreasing to 5 to 10 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet . $$ LHZ461-180400- MAFOR 1721/ HURON NORTH 11313 12323 11430 11436 11536 11630 11730. Waves 1 to 3 feet building to 3 to 5 feet...THEN building to 6 to 9 feet. Occasional wave height around 12 feet tonight. Waves 6 to 9 feet. Occasional wave height around 12 feet Saturday. HURON SOUTH 12310 11420 11430 12436 11526 11610. A chance of thunderstorms overnight and Saturday morning. Waves 2 feet or less building to 2 to 4 feet...THEN building to 5 to 7 feet. Occasional wave height around 10 feet tonight. Waves 4 to 6 feet Saturday. $$ KDK Experimental modernized open lake forecast is available online at weather.gov/dtx/glftable (all lower case) Graphical marine forecasts are available online at weather.gov/greatlakes (all lower case)  084 FZUS63 KDTX 171946 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 346 PM EDT Fri Apr 17 2026 Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. .SYNOPSIS...Some areas of fog this evening into early tonight mainly over the northern half of Lake Huron. Low pressure, 29.30 inches, lifting into northern Ontario drags a respectable cold front through the central Great Lakes Saturday supporting another round of showers and storms. Colder air filters into the region the rest of the weekend maintaining moderate to strong northwesterly winds. LCZ460-180400- Lake St Clair- 346 PM EDT Fri Apr 17 2026 .TONIGHT...Southeast winds 10 to 15 knots becoming south 15 to 20 knots early in the morning. Partly cloudy ...then mostly cloudy with light showers likely and a chance of thunderstorms early in the morning. Waves 1 to 3 feet. .SATURDAY...South winds 15 to 20 knots veering to the west in the afternoon. Light showers and a chance of thunderstorms in the morning...then light showers likely in the afternoon. Waves 1 to 3 feet. .SATURDAY NIGHT...West winds 10 to 15 knots. Partly cloudy. Waves 1 to 3 feet. .SUNDAY...West winds 10 to 15 knots increasing to 15 to 20 knots in the late morning and afternoon. Partly sunny. A chance of light showers early in the afternoon. Waves 1 to 3 feet. .SUNDAY NIGHT...Northwest winds 15 to 20 knots diminishing to 5 to 10 knots. Partly cloudy. A chance of light showers early in the evening. Waves 2 feet or less. .MONDAY...North winds 5 to 10 knots veering to the southeast in the evening. Mostly clear. Waves 2 feet or less. .TUESDAY...West winds 15 to 20 knots. Partly cloudy. Waves 1 to 3 feet. .WEDNESDAY...East winds 10 to 15 knots. Mostly clear. Waves 2 feet or less. $$ KDK Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes  754 FZUS61 KCLE 171948 GLFLE Open Lake Forecast for Lake Erie National Weather Service Cleveland OH 348 PM EDT Fri Apr 17 2026 For waters beyond five nautical miles of shore on Lake Erie Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. .SYNOPSIS... A warm front will lift north across Lake Erie Saturday morning before low pressure 29.40 inches drags a cold front east through the Great Lakes and Ohio Valley Saturday evening. A trough averaging 29.90 inches builds across the lake on Sunday before high pressure 30.40 inches moves overhead Sunday night into Monday. LEZ162>164-180230- Detroit River Lt. to Maumee Bay OH to Reno Beach OH beyond 5NM offshoreline to US-Canadian border- Reno Beach to The Islands OH beyond 5NM off shoreline to US- Canadian border- The Islands to Vermilion OH beyond 5 nm off shoreline to US- Canadian border- 348 PM EDT Fri Apr 17 2026 .TONIGHT...East winds 10 to 15 knots becoming south 15 to 20 knots. Patchy fog late this evening. A chance of showers and thunderstorms late. Waves 1 to 3 feet. .SATURDAY...South winds 15 to 20 knots becoming west. Showers with a chance of thunderstorms in the morning, then showers likely with a slight chance of thunderstorms early in the afternoon. A chance of showers with a slight chance of thunderstorms late. Waves 1 to 3 feet building to 2 to 4 feet. .SATURDAY NIGHT...West winds 15 to 20 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet. .SUNDAY...West winds 15 to 20 knots. Waves 1 to 3 feet. .SUNDAY NIGHT...Northwest winds 15 to 20 knots becoming north 10 to 15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet. .MONDAY...Northwest winds 5 to 15 knots becoming south 15 to 20 knots. Waves 1 to 3 feet. .TUESDAY...South winds 15 to 20 knots becoming northwest 10 to 15 knots. Waves 1 to 3 feet. .WEDNESDAY...Northeast winds 5 to 15 knots becoming east. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$ LEZ165>168-180230- Vermilion to Avon Point OH beyond 5 nm off shoreline to US- Canadian border- Avon Point to Willowick OH beyond 5 nm off shoreline to US- Canadian border-Willowick to Geneva-on-the- Lake OH beyond 5NM off shoreline to US-Canadian border-Geneva-on- the-Lake to Conneaut OH beyond 5 nm off shoreline to US- Canadian border- 348 PM EDT Fri Apr 17 2026 .TONIGHT...East winds 5 to 15 knots becoming southeast 15 to 20 knots. Patchy dense fog. Patchy fog late. Waves 1 to 3 feet. .SATURDAY...South winds 15 to 20 knots becoming west. A chance of showers with a slight chance of thunderstorms in the morning, then showers with a chance of thunderstorms in the afternoon. Waves 2 to 4 feet building to 3 to 5 feet. .SATURDAY NIGHT...West winds 15 to 20 knots. A chance of showers. Waves 2 to 4 feet. .SUNDAY...West winds 15 to 20 knots. A chance of rain showers in the afternoon. Waves 2 to 4 feet. .SUNDAY NIGHT...West winds 15 to 20 knots becoming north 10 to 15 knots. A chance of rain showers in the evening. Waves 2 to 4 feet. .MONDAY...Northwest winds 5 to 15 knots becoming south 15 to 20 knots. Waves 1 to 3 feet. .TUESDAY...South winds 15 to 20 knots becoming west 10 to 15 knots. Waves 2 to 4 feet. .WEDNESDAY...North winds 5 to 15 knots becoming east. Waves 2 to 4 feet subsiding to 1 foot or less. Winds and waves higher in and near thunderstorms. $$ LEZ061-169-180230- Ripley to Buffalo NY extending from 5NM off shoreline to US- Canadian border- Conneaut OH to Ripley NY beyond 5 nm off shoreline to US- Canadian border- 348 PM EDT Fri Apr 17 2026 .TONIGHT...Northeast winds 10 knots or less becoming southeast 10 to 15 knots. Areas of dense fog. Patchy fog late. Waves 2 feet or less. .SATURDAY...South winds 15 to 20 knots becoming southwest. A slight chance of showers in the morning, then showers with a chance of thunderstorms in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet. .SATURDAY NIGHT...Southwest winds 10 to 15 knots becoming west. Rain showers likely in the evening, then a chance of rain showers overnight. Waves 2 to 4 feet. .SUNDAY...West winds 10 to 15 knots. A chance of rain and snow showers in the afternoon. Waves 2 to 4 feet. .SUNDAY NIGHT...West winds 10 to 15 knots becoming northwest. A chance of rain showers in the evening. Waves 2 to 3 feet. .MONDAY...Northwest winds 5 to 10 knots becoming south. Waves 1 to 2 feet. .TUESDAY...South winds 10 to 15 knots becoming west. Waves 1 to 3 feet. .WEDNESDAY...North winds 10 knots or less becoming east. Waves 1 to 3 feet subsiding to 1 foot or less. Winds and waves higher in and near thunderstorms. $$ LEZ161-180230- MAFOR 1721/ ERIE WEST 1/3 11200 11210 11310 11410 11420 11426 11526 11620. A chance of thunderstorms Saturday morning. Waves 1 to 3 feet tonight. Waves 2 to 4 feet Saturday. ERIE CENTRAL 1/3 11100 11200 12310 12420 12526. A chance of thunderstorms Saturday afternoon. Waves 1 to 3 feet tonight. Waves 2 to 4 feet building to 3 to 5 feet Saturday. ERIE EAST 1/3 11100 11200 11204 11310 13420 11526. A chance of thunderstorms Saturday afternoon. Waves 2 feet or less tonight. Waves 1 to 3 feet building to 2 to 4 feet Saturday. $$  495 FZUS63 KMKX 171949 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Milwaukee/Sullivan WI 249 PM CDT Fri Apr 17 2026 FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON Lake Michigan. Waves are provided as a range of significant wave heights, which is the average of the highest 1/3 of the wave, along with the average height of the highest 10% of the waves which will occasionally be encountered. .SYNOPSIS... Southerly winds will continue to increase as a surface low of 29.4 inches tracks across Lake Superior this afternoon and evening. Winds will become gusty and southeasterly through tonight, and strong to severe storms will cross the lake as a cold front sweeps through the area. Winds are expected to remain just below gale force. Dense fog will continue over the lake until the cold front clears late tonight. Winds then become northwesterly behind the cold front Saturday morning. Breezy northwesterly winds then continue Saturday through Sunday as the low then races northeast toward Hudson Bay. Winds ease Monday morning as high pressure tracks southeast over the upper Great Lakes. LMZ261-362-364-366-563-565-567-868-180315- Lake Michigan from Seul Choix Point to Rock Island Passage 5 NM offshore to Mid Lake- Lake Michigan South of a line from Seul Choix Point to the Mackinac Bridge and north of a line from Charlevoix MI to South Fox Island 5 NM offshore- Lake Michigan from Charlevoix to Point Betsie MI 5 NM offshore to Mid Lake- Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to Mid Lake- Lake Michigan from Rock Island Passage to Sturgeon Bay WI- Lake Michigan from Sturgeon Bay to Two Rivers WI 5 NM offshore to Mid Lake- Lake Michigan from Two Rivers to Sheboygan WI 5 NM offshore to Mid Lake- Lake Michigan from Pentwater to Manistee MI 5 NM offshore to Mid Lake- 249 PM CDT Fri Apr 17 2026 SHEBOYGAN WI TO PENTWATER MI NORTH... ...DENSE FOG ADVISORY IN EFFECT UNTIL 4 AM CDT SATURDAY... .TONIGHT...Southeast winds to 30 kt. A few gale force gusts up to 35 kt possible. Patchy fog. Rain showers with a chance of thunderstorms. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally to 9 ft. .SATURDAY...Northwest winds to 30 kt becoming west 15 to 25 kt. Patchy fog in the morning. Chance of rain showers in the morning, then chance of snow showers and slight chance of rain showers in the afternoon. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft. .SATURDAY NIGHT...West winds 15 to 25 kt. Waves 4 to 6 ft occasionally to 8 ft. .SUNDAY...Northwest winds 15 to 25 kt. Waves 3 to 5 ft. .SUNDAY NIGHT...North winds 15 to 25 kt diminishing to 10 to 20 kt. Waves 2 to 4 ft subsiding to 1 to 3 ft. .MONDAY...West winds 10 to 15 kt becoming south 10 to 20 kt. Waves 1 to 2 ft building to 2 to 4 ft. .MONDAY NIGHT...South winds to 30 kt. Waves 6 to 9 ft occasionally to 12 ft. .TUESDAY...Southwest winds to 30 kt diminishing to 10 to 20 kt. Waves 6 to 9 ft occasionally to 12 ft. .WEDNESDAY...East winds 10 to 15 kt becoming northeast. Waves 1 to 3 ft. $$ LMZ080-669-671-673-675-777-779-870-872-874-876-878-180315- Lake Michigan from Michigan City IN to St. Joseph MI 5 NM offshore to Mid Lake- Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore to Mid Lake- Lake Michigan from Port Washington to North Point Light WI 5 NM offshore to Mid Lake- Lake Michigan from North Point Light to Wind Point WI 5 NM offshore to Mid Lake- Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM offshore to Mid Lake- Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM offshore to Mid Lake- Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM offshore to Mid Lake- Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid Lake- Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to Mid Lake- Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid Lake- Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid Lake- Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to Mid Lake- 249 PM CDT Fri Apr 17 2026 SHEBOYGAN WI TO PENTWATER MI SOUTH... ...DENSE FOG ADVISORY IN EFFECT UNTIL 4 AM CDT SATURDAY... .TONIGHT...South winds to 30 kt veering to west. Patchy fog. Rain showers with a chance of thunderstorms. Waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft. .SATURDAY...Northwest winds to 30 kt becoming west 15 to 25 kt. Patchy fog in the morning. Slight chance of rain showers in the morning. Waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft. .SATURDAY NIGHT...West winds 15 to 25 kt diminishing to 10 to 20 kt. Waves 4 to 6 ft occasionally to 8 ft. .SUNDAY...West winds 10 to 20 kt becoming northwest. Waves 4 to 6 ft occasionally to 8 ft. .SUNDAY NIGHT...North winds 10 to 15 kt becoming northeast. Waves 2 to 4 ft. .MONDAY...East winds 5 to 10 kt becoming southeast 10 to 20 kt in the afternoon. Waves 1 to 2 ft building to 2 to 4 ft. .MONDAY NIGHT...Southeast winds 15 to 25 kt becoming south to 30 kt. Waves 4 to 6 ft occasionally to 8 ft building to 5 to 8 ft occasionally to 10 ft. .TUESDAY...South winds to 30 kt diminishing to 10 to 20 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally to 9 ft. .WEDNESDAY...Northeast winds 10 to 15 kt. Waves 2 to 4 ft subsiding to 1 to 3 ft. $$ LMZ761-180315- MAFOR 1722/ MICHIGAN NORTH 11346 19344 12446 11546 11740 11730 12630. A chance of thunderstorms tonight. A chance of snow showers Saturday afternoon. Waves 3 to 5 feet building to 5 to 8 feet tonight. Waves 3 to 6 feet subsiding to 2 to 4 feet Saturday. MICHIGAN SOUTH 13446 11546 19544 11640 11740 11730 11630. Waves 3 to 5 feet building to 4 to 7 feet, then subsiding to 3 to 6 feet tonight. Waves 3 to 6 feet Saturday. $$ Cronce Experimental modernized open lake forecast is available online at weather.gov/mkx/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes