811 FZUS63 KMQT 170201 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 1001 PM EDT Thu Apr 16 2026 For waters beyond 5 nautical miles of shore on Lake Superior. 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... Weak ridging of around 29.8 inches persists over Lake Superior through tonight. Troughing averaging 29.5 inches moves across the lake Friday evening and Saturday morning. Ridging builds over Lake Superior the remainder by Sunday, reaching about 30.3 inches Monday morning. This gives way quickly to 29.6 inch troughing Monday evening as a low swings southeast through Ontario toward James Bay. LSZ162-170800- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 1001 PM EDT Thu Apr 16 2026 /901 PM CDT Thu Apr 16 2026/ .REST OF TONIGHT...Northeast winds 10 to 20 knots. Patchy fog. Waves 2 to 4 feet. .FRIDAY...East winds 10 to 20 knots backing northeast in the afternoon, then backing northwest late. Patchy fog through early afternoon. Rain showers likely and a chance of thunderstorms by mid afternoon. Waves subsiding to 1 to 3 feet. .FRIDAY NIGHT...West winds 15 to 25 knots increasing to 20 to 30 knots late. Rain showers likely and a slight chance of thunderstorms through midnight, then a slight chance of rain showers after midnight. Waves building to 3 to 5 feet occasionally to 7 feet. .SATURDAY...West gales to 35 knots diminishing to 20 to 30 knots by mid afternoon. A slight chance of snow showers. Waves building to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. .SATURDAY NIGHT...Northwest winds 20 to 30 knots diminishing to 15 to 25 knots after midnight. Waves subsiding to 2 to 4 feet. .SUNDAY...Northwest winds 10 to 20 knots becoming west 5 to 15 knots by mid afternoon. Waves subsiding to calm to 2 feet. .SUNDAY NIGHT...Northwest winds 5 to 15 knots veering east after midnight. Waves calm to 2 feet. .MONDAY...South winds 10 to 20 knots becoming southwest 15 to 25 knots. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. .TUESDAY...West winds 10 to 20 knots becoming north 5 to 15 knots. Waves subsiding to calm to 2 feet. $$ LSZ263-170800- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 1001 PM EDT Thu Apr 16 2026 .REST OF TONIGHT...East winds 5 to 15 knots veering southeast late. Patchy fog. Waves calm to 2 feet building to 2 to 4 feet. .FRIDAY...East winds 10 to 20 knots veering south late. Patchy fog through early afternoon. A chance of showers and thunderstorms by mid afternoon. Waves building to 3 to 6 feet occasionally to 8 feet. .FRIDAY NIGHT...West winds 20 to 30 knots. Rain showers and a chance of thunderstorms through midnight, then a slight chance of rain showers, snow showers and sleet after midnight. Waves subsiding to 3 to 5 feet occasionally to 7 feet, then building to 4 to 7 feet occasionally to 9 feet. .SATURDAY...West winds 20 to 30 knots increasing to gales to 35 knots by mid afternoon. A slight chance of snow showers. Waves building to 8 to 11 feet occasionally to 14 feet. .SATURDAY NIGHT...Northwest gales to 35 knots. Waves subsiding to 4 to 7 feet occasionally to 9 feet. .SUNDAY...Northwest winds 20 to 30 knots becoming west 15 to 25 knots by mid afternoon. Waves subsiding to 1 to 3 feet. .SUNDAY NIGHT...Northwest winds 10 to 20 knots becoming south 5 to 15 knots after midnight. Waves subsiding to calm to 2 feet. .MONDAY...South winds 10 to 20 knots becoming southwest 20 to 30 knots. Waves building to 4 to 7 feet occasionally to 9 feet. .TUESDAY...West winds 15 to 25 knots becoming north 5 to 15 knots. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. $$ LSZ264-170800- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 1001 PM EDT Thu Apr 16 2026 .REST OF TONIGHT...Southeast winds 5 to 15 knots increasing to 10 to 20 knots after midnight. Areas of dense fog. Waves calm to 2 feet building to 3 to 5 feet occasionally to 7 feet. .FRIDAY...Southeast winds 15 to 25 knots increasing to 20 to 30 knots in the afternoon. Areas of dense fog through early afternoon. A slight chance of showers and thunderstorms by mid afternoon. Waves building to 6 to 9 feet occasionally to 11 feet. .FRIDAY NIGHT...South winds 20 to 30 knots becoming west 15 to 25 knots after midnight, then increasing to 20 to 30 knots late. Rain showers and a chance of thunderstorms through midnight, then a chance of rain showers, possibly mixed with freezing rain, snow showers and sleet after midnight. Waves building to 8 to 11 feet occasionally to 14 feet, then subsiding to 4 to 7 feet occasionally to 9 feet. .SATURDAY...West gales to 35 knots. A slight chance of snow showers through early afternoon. Waves building to 8 to 11 feet occasionally to 14 feet. .SATURDAY NIGHT...Northwest gales to 35 knots. Waves subsiding to 7 to 10 feet occasionally to 13 feet, then building to 8 to 11 feet occasionally to 14 feet. .SUNDAY...Northwest winds 20 to 30 knots diminishing to 15 to 25 knots by mid afternoon. Waves subsiding to 2 to 4 feet. .SUNDAY NIGHT...Northwest winds 5 to 15 knots veering north after midnight. Waves subsiding to calm to 2 feet. .MONDAY...South winds 15 to 25 knots increasing to 20 to 30 knots. Waves building to 5 to 8 feet occasionally to 10 feet. .TUESDAY...West winds 20 to 30 knots becoming north 5 to 15 knots. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. $$ LSZ265-170800- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 1001 PM EDT Thu Apr 16 2026 .REST OF TONIGHT...Southeast winds 10 to 20 knots increasing to 15 to 25 knots late. Areas of dense fog. Waves calm to 2 feet building to 2 to 4 feet. .FRIDAY...Southeast winds 20 to 30 knots becoming south to 30 knots with a few gale force gusts to 35 knots possible late. A slight chance of rain showers by mid afternoon. Waves building to 6 to 9 feet occasionally to 11 feet. .FRIDAY NIGHT...South winds to 30 knots with a few gale force gusts to 35 knots possible becoming west 20 to 30 knots after midnight, then increasing to 30 knots with a few gale force gusts to 35 knots possible late. Rain showers and a chance of thunderstorms through midnight, then a chance of rain showers, possibly mixed with snow and sleet after midnight. Waves building to 7 to 10 feet occasionally to 13 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. .SATURDAY...West gales to 40 knots. A slight chance of rain showers through early afternoon. A slight chance of snow showers and sleet. Waves building to 7 to 10 feet occasionally to 13 feet. .SATURDAY NIGHT...Northwest gales to 40 knots. A slight chance of snow showers through midnight. Waves subsiding to 6 to 9 feet occasionally to 11 feet. .SUNDAY...Northwest gales to 35 knots diminishing to 20 to 30 knots by mid afternoon. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .SUNDAY NIGHT...Northwest winds 10 to 20 knots. Waves subsiding to calm to 2 feet. .MONDAY...Southeast winds 10 to 20 knots becoming south gales to 35 knots. Waves building to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. .TUESDAY...Northwest winds 20 to 30 knots diminishing to 10 to 20 knots. Waves subsiding to calm to 2 feet, then building to 2 to 4 feet. $$ LSZ266-170800- Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore- 1001 PM EDT Thu Apr 16 2026 .REST OF TONIGHT...Southeast winds 10 to 20 knots. Areas of dense fog. Waves calm to 2 feet building to 3 to 5 feet occasionally to 7 feet. .FRIDAY...Southeast winds 15 to 25 knots increasing to 20 to 30 knots in the afternoon, then becoming south to 30 knots with a few gale force gusts to 35 knots possible late. Areas of dense fog through early afternoon. Waves building to 7 to 10 feet occasionally to 13 feet. .FRIDAY NIGHT...South winds to 30 knots with a few gale force gusts to 35 knots possible veering west late. A slight chance of thunderstorms through midnight. Rain showers. A slight chance of sleet after midnight. Waves building to 8 to 11 feet occasionally to 14 feet, then subsiding to 5 to 8 feet occasionally to 10 feet. .SATURDAY...West gales to 40 knots. A slight chance of rain showers through early afternoon. A slight chance of freezing rain, snow showers and sleet. Waves building to 10 to 14 feet occasionally to 18 feet. .SATURDAY NIGHT...Northwest gales to 40 knots. A slight chance of snow showers. Waves 10 to 14 feet occasionally to 18 feet. .SUNDAY...Northwest gales to 35 knots. Waves subsiding to 7 to 10 feet occasionally to 13 feet. .SUNDAY NIGHT...Northwest winds 15 to 25 knots becoming north 10 to 20 knots after midnight. Waves subsiding to 2 to 4 feet. .MONDAY...South winds 15 to 25 knots increasing to gales to 40 knots. Waves subsiding to calm to 2 feet, then building to 7 to 10 feet occasionally to 13 feet. .TUESDAY...West winds 20 to 30 knots becoming northwest 10 to 20 knots. Waves subsiding to 2 to 4 feet, then building to 3 to 5 feet occasionally to 7 feet. $$ LSZ267-170800- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 1001 PM EDT Thu Apr 16 2026 .REST OF TONIGHT...Southeast winds 5 to 15 knots. Widespread dense fog. Waves calm to 2 feet. .FRIDAY...Southeast winds 10 to 20 knots increasing to 20 to 30 knots. Areas of dense fog through early afternoon. Waves building to 4 to 7 feet occasionally to 9 feet. .FRIDAY NIGHT...Southeast winds to 30 knots with a few gale force gusts to 35 knots possible veering south after midnight, then veering west late. Rain showers and a slight chance of thunderstorms. Waves building to 4 to 8 feet occasionally to 10 feet. .SATURDAY...West gales to 40 knots. A chance of rain showers, possibly mixed with snow. A slight chance of sleet by mid afternoon. Waves building to 10 to 14 feet occasionally to 18 feet. .SATURDAY NIGHT...West gales to 40 knots veering northwest after midnight. A slight chance of rain showers and sleet through midnight. A slight chance of snow showers. Waves 10 to 14 feet occasionally to 18 feet. .SUNDAY...Northwest gales to 40 knots. Waves subsiding to 7 to 10 feet occasionally to 13 feet. .SUNDAY NIGHT...Northwest winds 15 to 25 knots becoming north 10 to 20 knots after midnight. Waves subsiding to 2 to 4 feet. .MONDAY...South winds 10 to 20 knots increasing to gales to 35 knots. Waves subsiding to calm to 2 feet, then building to 6 to 9 feet occasionally to 11 feet. .TUESDAY...West winds 20 to 30 knots becoming northwest 10 to 20 knots. Waves subsiding to 2 to 4 feet, then building to 3 to 5 feet occasionally to 7 feet. $$ LSZ261-170800- MAFOR 1703/ Superior West 11120 13220 11210 11110 11816 11726. A chance of thunderstorms Friday afternoon and Friday evening. Waves 2 to 4 feet. Superior North Central 13324 11334 11330 12340 11446. A chance of thunderstorms Friday evening. Waves 1 to 3 feet building to 2 to 4 feet overnight. Waves 3 to 6 feet building to 5 to 8 feet Friday. Waves 7 to 10 feet Friday evening. Superior South Central 13324 11334 12340 11450 11456. A chance of thunderstorms Friday evening. Waves 1 to 3 feet overnight. Waves 2 to 4 feet building to 5 to 8 feet Friday. Waves 6 to 9 feet Friday evening. Superior East 11304 11314 12324 12330 11340 11346. Waves 2 feet or less overnight. Waves 1 to 3 feet building to 3 to 6 feet Friday. Waves 5 to 8 feet Friday evening. $$ WFO MQT Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes  983 FZUS61 KBUF 170210 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1010 PM EDT Thu Apr 16 2026 For waters beyond five nautical miles of shore on Lake Ontario 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 29.7 inch low over southern Quebec will move to the Saint Lawrence Valley this evening, then to the Canadian Maritimes by Friday morning...with a 30.0 inch high then building across the Lower Great Lakes Friday, and New England Friday night. A 29.4 inch low near Lake Superior Friday evening will move to James Bay and deepen to 29.0 inches Saturday, while pushing a trailing strong cold front across the lake later Saturday and Saturday evening. A 30.4 inch high will then settle southeastward across the Great Lakes Sunday through Monday night, before sliding off the mid-Atlantic coast Tuesday. LOZ062-170900- Lake Ontario open waters from the Niagara River to Hamlin Beach- 1010 PM EDT Thu Apr 16 2026 .OVERNIGHT...West winds 5 to 10 knots becoming northwest. A chance of showers. Areas of fog. Waves 1 to 3 feet. .FRIDAY...Northwest winds 10 knots or less becoming south. Patchy fog early. Waves 1 foot or less. .FRIDAY NIGHT...Southeast winds 10 knots or less becoming east. Waves 1 foot or less. .SATURDAY...Southeast winds 5 to 15 knots becoming southwest 15 to 20 knots. A chance of showers in the morning, then showers in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet. .SATURDAY NIGHT...Southwest winds 15 to 20 knots becoming west. Rain showers. Waves 2 to 4 feet building to 3 to 5 feet. .SUNDAY...West winds 15 to 25 knots becoming northwest. A chance of rain showers during the day. Waves 3 to 6 feet. .MONDAY...Northwest winds 15 to 20 knots becoming southwest 10 to 15 knots. Waves 3 to 6 feet subsiding to 1 to 2 feet. .TUESDAY...South winds 15 to 20 knots becoming west. Waves 2 to 4 feet building to 3 to 5 feet. $$ LOZ063>065-170900- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 1010 PM EDT Thu Apr 16 2026 .OVERNIGHT...West winds 5 to 10 knots becoming northwest. Areas of fog. A chance of showers. Waves 1 to 2 feet. .FRIDAY...North winds 10 knots or less becoming west. Patchy fog early. A chance of showers early. Waves 2 feet or less. .FRIDAY NIGHT...West winds 10 knots or less becoming southeast. Waves 1 foot or less. .SATURDAY...Southeast winds 10 to 15 knots becoming south 15 to 20 knots. Showers likely in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet. .SATURDAY NIGHT...South winds 15 to 20 knots becoming west. Rain showers. Waves 2 to 4 feet building to 3 to 6 feet. .SUNDAY...West winds 15 to 25 knots becoming northwest. Rain showers likely with a chance of snow showers during the day, then a chance of rain and snow showers Sunday night. Waves 3 to 6 feet building to 5 to 9 feet. Waves occasionally around 11 feet. .MONDAY...Northwest winds 15 to 25 knots becoming west. Waves 5 to 8 feet subsiding to 3 to 6 feet. Waves occasionally around 10 feet. .TUESDAY...South winds 15 to 20 knots becoming west. A chance of rain showers Tuesday night. Waves 2 to 4 feet building to 3 to 5 feet. $$ LOZ061-170900- MAFOR 1703/ ONTARIO WEST 1/2 12703 11700 11800 11700 11500 11300 11200. A chance of showers overnight. Waves 2 feet or less. ONTARIO EAST 1/2 11603 12703 11800 12700 11600 11500. A chance of showers overnight. Waves 2 feet or less. $$  705 FZUS61 KBUF 170211 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1011 PM EDT Thu Apr 16 2026 SLZ022-024-170900- Saint Lawrence River from Cape Vincent to Saint Regis 1011 PM EDT Thu Apr 16 2026 .OVERNIGHT...West winds less than 10 knots becoming north. A chance of showers. Patchy fog. .FRIDAY...North winds less than 10 knots becoming northeast. Mostly cloudy through early afternoon, then becoming partly sunny. .FRIDAY NIGHT...Northeast winds less than 10 knots. Mainly clear in the evening, then becoming partly cloudy. .SATURDAY...Southeast winds 5 to 15 knots becoming south. A chance of showers in the afternoon. .SATURDAY NIGHT...South winds 10 to 15 knots becoming southwest. Showers. .SUNDAY...West winds 5 to 15 knots becoming northwest. Rain showers during the day, then a chance of rain showers Sunday night. .MONDAY...Northwest winds 10 knots or less becoming southwest. Partly cloudy, then becoming mainly clear. .TUESDAY...South winds 5 to 15 knots becoming southwest. A chance of rain showers. $$  210 FZUS63 KMKX 170223 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Milwaukee/Sullivan WI 923 PM CDT Thu Apr 16 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... Winds becoming light and variable tonight for a time as a weak surface ridge moves over the lake. Dense fog will continue over the lake through this time. Winds then come around to southerly tomorrow morning as a surface low of 29.5 inches approaches from the central plains. This surface low will quickly move from Omaha to Duluth from the morning into the afternoon. Winds will become gusty and southeasterly Friday night, and strong to severe storms will move east over the lake as a cold front sweeps through the area. 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 move southeast over the upper Great Lakes. LMZ261-362-364-366-563-565-567-868-170915- 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- 923 PM CDT Thu Apr 16 2026 SHEBOYGAN WI TO PENTWATER MI NORTH... ...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT FRIDAY... .REST OF TONIGHT...Southeast winds 5 to 10 kt. Patchy dense fog late this evening, then widespread dense fog overnight. Waves 1 to 2 ft. .FRIDAY...Southeast winds 10 to 15 kt increasing to 30 kt. Widespread dense fog in the morning, then patchy fog in the afternoon. Waves 1 to 2 ft building to 4 to 6 ft occasionally to 8 ft. .FRIDAY NIGHT...Southeast winds to 30 kt veering to southwest 15 to 25 kt. Patchy fog. Rain showers likely with a chance of thunderstorms in the evening, then chance of rain showers and thunderstorms overnight. Waves 4 to 7 ft occasionally to 9 ft. .SATURDAY...Northwest winds to 30 kt becoming west 15 to 25 kt. Chance of rain showers in the morning. Waves 4 to 6 ft occasionally to 8 ft. .SATURDAY NIGHT...West winds 15 to 25 kt becoming northwest to 30 kt. Waves 4 to 6 ft occasionally to 8 ft. .SUNDAY...Northwest winds to 30 kt. Waves 4 to 6 ft occasionally to 8 ft. .SUNDAY NIGHT...North winds 15 to 25 kt diminishing to 10 to 20 kt. Waves 2 to 4 ft. .MONDAY...Southwest winds 10 to 15 kt becoming south 10 to 20 kt. Waves 1 to 3 ft building to 2 to 4 ft. .TUESDAY...Southwest gales to 35 kt diminishing to 15 to 25 kt. Waves 7 to 10 ft occasionally to 13 ft. $$ LMZ080-669-671-673-675-777-779-870-872-874-876-878-170915- 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- 923 PM CDT Thu Apr 16 2026 SHEBOYGAN WI TO PENTWATER MI SOUTH... ...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT FRIDAY... .REST OF TONIGHT...North winds 5 to 10 kt veering to south. Widespread dense fog. Waves 1 to 2 ft. .FRIDAY...Southeast winds 10 to 15 kt increasing to 30 kt. Widespread dense fog in the morning, then patchy fog in the afternoon. Waves 1 ft or less building to 4 to 6 ft occasionally to 8 ft. .FRIDAY NIGHT...South winds to 30 kt veering to southwest 15 to 25 kt. Chance of rain showers and thunderstorms in the evening, then chance of rain showers overnight. Patchy fog overnight. Waves 4 to 7 ft occasionally to 9 ft. .SATURDAY...Northwest winds to 30 kt becoming west 15 to 25 kt. Chance of rain showers in the morning. Waves 4 to 7 ft occasionally to 9 ft. .SATURDAY NIGHT...West winds 10 to 20 kt increasing to 15 to 25 kt. Waves 4 to 6 ft occasionally to 8 ft building to 4 to 7 ft occasionally to 9 ft. .SUNDAY...Northwest winds 15 to 25 kt. Waves 4 to 7 ft occasionally to 9 ft. .SUNDAY NIGHT...North winds 10 to 20 kt diminishing to 10 to 15 kt. Waves 3 to 5 ft subsiding to 1 to 3 ft. .MONDAY...Southeast winds 10 to 15 kt increasing to 10 to 20 kt. Waves 1 to 3 ft building to 2 to 4 ft. .TUESDAY...Southwest winds to 30 kt diminishing to 15 to 25 kt. Waves 7 to 10 ft occasionally to 13 ft. $$ LMZ761-170915- MAFOR 1704/ MICHIGAN NORTH 11304 11404 11314 11424 11430 12340 11446. A chance of thunderstorms Friday evening. Waves 1 foot or less overnight. Waves 1 to 3 feet building to 3 to 5 feet Friday. Waves 3 to 6 feet building to 4 to 7 feet Friday evening. MICHIGAN SOUTH 11604 11404 11314 11324 11330 12340 11446. A chance of thunderstorms Friday evening. Waves 1 foot or less overnight. Waves 1 to 3 feet building to 3 to 5 feet Friday. Waves 3 to 6 feet building to 4 to 7 feet Friday evening. $$ Kuroski Experimental modernized open lake forecast is available online at weather.gov/mkx/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes