151 FZUS63 KMQT 152001 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 401 PM EDT Wed Apr 15 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 tonight through Thursday and into Friday, before troughing averaging 29.5 inches moves across the lake Friday evening and Saturday morning. Ridging builds into Lake Superior for the remainder of Saturday and throughout Sunday, reaching about 30.3 inches Monday morning. This gives way quickly to troughing Monday evening as a low swings southeast through Ontario toward James Bay, decreasing to around 29.6 by Monday evening. LSZ162-160800- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 401 PM EDT Wed Apr 15 2026 /301 PM CDT Wed Apr 15 2026/ ...DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM EDT /10 AM CDT/ THURSDAY... .LATE THIS AFTERNOON...Northeast winds 5 to 15 knots. Patchy fog. Waves calm to 2 feet. .TONIGHT...Northeast winds less than 10 knots increasing to 5 to 15 knots late. Areas of dense fog. Waves calm to 2 feet. .THURSDAY...South winds 5 to 15 knots becoming east 10 to 20 knots late. Areas of dense fog through early afternoon. Waves calm to 2 feet. .THURSDAY NIGHT...Northeast winds 10 to 20 knots. Waves calm to 2 feet. .FRIDAY...Northeast winds 5 to 15 knots increasing to 10 to 20 knots by mid afternoon. Rain showers likely and a chance of thunderstorms by mid afternoon. Waves building to 2 to 4 feet. .FRIDAY NIGHT...Northwest winds 15 to 25 knots increasing to 20 to 30 knots after midnight. Rain showers likely through midnight. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. .SATURDAY...West winds 20 to 30 knots. Waves building to 3 to 5 feet occasionally to 7 feet. .SATURDAY NIGHT...Northwest winds 20 to 30 knots diminishing to 15 to 25 knots after midnight. Waves building to 3 to 6 feet occasionally to 8 feet. .SUNDAY...Northwest winds 15 to 25 knots diminishing to 5 to 15 knots. Waves subsiding to calm to 2 feet. .MONDAY...South winds 5 to 15 knots becoming west 10 to 20 knots. Waves building to 2 to 4 feet. $$ LSZ263-160800- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 401 PM EDT Wed Apr 15 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM EDT THURSDAY... .LATE THIS AFTERNOON...Northeast winds less than 10 knots. Patchy dense fog. Waves calm to 2 feet. .TONIGHT...Northeast winds less than 10 knots veering east after midnight. Areas of dense fog. Waves calm to 2 feet. .THURSDAY...South winds less than 10 knots becoming southwest 5 to 15 knots in the afternoon, then backing east late. Areas of dense fog through early afternoon, then patchy fog by mid afternoon. Waves calm to 2 feet. .THURSDAY NIGHT...East winds 5 to 15 knots increasing to 10 to 20 knots late. Waves calm to 2 feet. .FRIDAY...East winds 10 to 20 knots increasing to 15 to 25 knots by mid afternoon. A chance of rain showers and a slight chance of thunderstorms by mid afternoon. Waves building to 2 to 4 feet. .FRIDAY NIGHT...West winds 20 to 30 knots. Rain showers through midnight, then a chance of rain and snow showers after midnight. Waves building to 4 to 7 feet occasionally to 9 feet. .SATURDAY...West winds 20 to 30 knots increasing to gales to 35 knots by mid afternoon. Waves building to 6 to 9 feet occasionally to 11 feet. .SATURDAY NIGHT...Northwest gales to 35 knots. Waves building to 8 to 11 feet occasionally to 14 feet. .SUNDAY...Northwest winds 20 to 30 knots diminishing to 10 to 20 knots. Waves subsiding to 1 to 3 feet. .MONDAY...South winds 10 to 20 knots increasing to 20 to 30 knots. Waves subsiding to calm to 2 feet, then building to 3 to 6 feet occasionally to 8 feet. $$ LSZ264-160800- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 401 PM EDT Wed Apr 15 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM EDT THURSDAY... .LATE THIS AFTERNOON...North winds less than 10 knots. Patchy dense fog. Waves calm to 2 feet. .TONIGHT...North winds less than 10 knots backing southwest after midnight, then veering west late. Areas of dense fog. Waves calm to 2 feet. .THURSDAY...Southwest winds less than 10 knots becoming south 5 to 15 knots late. Areas of dense fog through early afternoon, then patchy fog by mid afternoon. Waves calm to 2 feet. .THURSDAY NIGHT...Southeast winds 5 to 15 knots increasing to 15 to 25 knots. Patchy fog through midnight. Waves calm to 2 feet. .FRIDAY...Southeast winds 15 to 25 knots increasing to 20 to 30 knots by mid afternoon. A chance of rain showers by mid afternoon. Waves building to 3 to 6 feet occasionally to 8 feet. .FRIDAY NIGHT...South winds 20 to 30 knots veering northwest after midnight. Rain showers through midnight, then a chance of rain showers, possibly mixed with snow after midnight. Waves building to 4 to 7 feet occasionally to 9 feet. .SATURDAY...West gales to 35 knots. Waves building to 6 to 9 feet occasionally to 11 feet. .SATURDAY NIGHT...Northwest gales to 35 knots. Waves building to 9 to 12 feet occasionally to 15 feet. .SUNDAY...Northwest gales to 35 knots diminishing to 10 to 20 knots. Waves subsiding to 2 to 4 feet. .MONDAY...South winds 10 to 20 knots increasing to 20 to 30 knots. Waves subsiding to 1 to 3 feet, then building to 4 to 7 feet occasionally to 9 feet. $$ LSZ265-160800- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 401 PM EDT Wed Apr 15 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM EDT THURSDAY... .LATE THIS AFTERNOON...North winds 5 to 15 knots. Patchy dense fog. Waves calm to 2 feet. .TONIGHT...Northeast winds 5 to 15 knots veering southeast after midnight, then backing north late. Areas of dense fog. Waves calm to 2 feet. .THURSDAY...North winds 5 to 15 knots veering east late. Areas of dense fog through early afternoon, then patchy fog by mid afternoon. Waves calm to 2 feet. .THURSDAY NIGHT...Southeast winds 5 to 15 knots increasing to 10 to 20 knots after midnight. Patchy fog through midnight. Waves calm to 2 feet. .FRIDAY...Southeast winds 15 to 25 knots increasing to 20 to 30 knots by mid afternoon. A slight chance of rain showers by mid afternoon. Waves building to 3 to 6 feet occasionally to 8 feet. .FRIDAY NIGHT...South gales to 35 knots veering west after midnight. Rain showers. Waves building to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. .SATURDAY...West gales to 40 knots. A chance of rain showers through early afternoon. A chance of snow showers. Waves building to 7 to 10 feet occasionally to 13 feet. .SATURDAY NIGHT...Northwest gales to 40 knots. A chance of snow showers. Waves building to 9 to 12 feet occasionally to 15 feet. .SUNDAY...Northwest gales to 35 knots diminishing to 15 to 25 knots. Waves subsiding to 2 to 4 feet. .MONDAY...Southeast winds 15 to 25 knots becoming south 20 to 30 knots. Waves subsiding to 1 to 3 feet, then building to 3 to 6 feet occasionally to 8 feet. $$ LSZ266-160800- 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- 401 PM EDT Wed Apr 15 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM EDT THURSDAY... .LATE THIS AFTERNOON...North winds 5 to 15 knots. Areas of dense fog. Waves calm to 2 feet. .TONIGHT...North winds 5 to 15 knots backing west after midnight, then veering northwest late. A slight chance of rain showers through midnight. Areas of dense fog. Waves calm to 2 feet. .THURSDAY...Northwest winds 5 to 15 knots veering north late. Areas of dense fog through early afternoon, then patchy fog by mid afternoon. Waves calm to 2 feet. .THURSDAY NIGHT...Southeast winds 5 to 15 knots increasing to 15 to 25 knots. Patchy fog through midnight. Waves calm to 2 feet. .FRIDAY...Southeast winds 20 to 30 knots increasing to gales to 35 knots by mid afternoon. A slight chance of rain showers by mid afternoon. Waves building to 3 to 6 feet occasionally to 8 feet. .FRIDAY NIGHT...South gales to 35 knots veering west after midnight. Rain showers. Waves building to 4 to 8 feet occasionally to 10 feet. .SATURDAY...West gales to 40 knots. A chance of rain showers through early afternoon. A chance of snow showers. Waves building to 10 to 14 feet occasionally to 18 feet. .SATURDAY NIGHT...West gales to 40 knots veering northwest after midnight. A chance of snow showers. Waves building to 12 to 17 feet occasionally to 21 feet. .SUNDAY...Northwest gales to 35 knots diminishing to 15 to 25 knots. Waves subsiding to 4 to 7 feet occasionally to 9 feet. .MONDAY...South winds 15 to 25 knots increasing to gales to 35 knots. Waves subsiding to 2 to 4 feet, then building to 5 to 8 feet occasionally to 10 feet. $$ LSZ267-160800- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 401 PM EDT Wed Apr 15 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM EDT THURSDAY... .LATE THIS AFTERNOON...West winds 5 to 15 knots. Patchy dense fog. Waves calm to 2 feet. .TONIGHT...West winds 5 to 15 knots veering northwest late. A slight chance of rain showers through midnight. Areas of dense fog. Waves calm to 2 feet. .THURSDAY...North winds 5 to 15 knots backing northwest in the afternoon. Areas of dense fog through early afternoon, then patchy fog by mid afternoon. Waves calm to 2 feet. .THURSDAY NIGHT...Northwest winds 5 to 15 knots backing southeast after midnight. Waves calm to 2 feet. .FRIDAY...Southeast winds 10 to 20 knots increasing to 15 to 25 knots by mid afternoon. Waves building to 2 to 4 feet. .FRIDAY NIGHT...Southeast gales to 35 knots veering south after midnight. Rain showers. Waves building to 3 to 6 feet occasionally to 8 feet. .SATURDAY...West gales to 40 knots. A chance of rain and snow showers. Waves building to 10 to 14 feet occasionally to 18 feet. .SATURDAY NIGHT...West gales to 35 knots becoming northwest gales to 40 knots after midnight. A chance of snow showers. Waves building to 12 to 17 feet occasionally to 21 feet. .SUNDAY...Northwest gales to 35 knots diminishing to 15 to 25 knots. Waves subsiding to 4 to 7 feet occasionally to 9 feet. .MONDAY...South winds 10 to 20 knots increasing to 20 to 30 knots. Waves subsiding to 1 to 3 feet, then building to 4 to 7 feet occasionally to 9 feet. $$ LSZ261-160200- MAFOR 1521/ Superior West 12100 11204 12104 11204 11400 11200. Waves 1 foot or less. Superior North Central 12800 19804 11204 13604 12600. Waves 1 foot or less. Superior South Central 11800 19804 11104 11204 11504 12804 11700 11800. Waves 1 foot or less. Superior East 12604 11704 11604 11704 11804 12700. Waves 1 foot or less. $$ 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  677 FZUS61 KBUF 152003 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 403 PM EDT Wed Apr 15 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 29.6 inch low will move into the central Great Lakes tonight before reaching southern Quebec Thursday night, then drift off the New England coast by Friday night. A 30.0 inch high is then forecast to build from the central Great Lakes Friday to the lower Great Lakes Saturday morning, then off the east coast Saturday night. A 29.3 inch surface low to the north of Lake Superior Saturday will deepen to 28.9 inches by Sunday, with a trailing cold front crossing the Lake Saturday night. A 30.4 inch surface high will push from the Plains to the Upper Ohio Valley from Sunday through Monday. LOZ062-160300- Lake Ontario open waters from the Niagara River to Hamlin Beach- 403 PM EDT Wed Apr 15 2026 .TONIGHT...Southwest winds 10 to 15 knots. A chance of showers and thunderstorms this evening, then showers with a chance of thunderstorms after midnight. Waves 1 to 3 feet. .THURSDAY...South winds 10 to 15 knots becoming southwest 15 to 20 knots. A chance of showers in the morning, then showers likely in the afternoon. Waves 1 to 3 feet. .THURSDAY NIGHT...Southwest winds 15 to 20 knots becoming west and diminishing to around 10 knots. Showers likely in the evening, then a chance of showers overnight. Waves 1 to 3 feet. .FRIDAY...Northwest winds 10 knots or less becoming southeast. A chance of showers in the morning. Waves 2 feet or less. .FRIDAY NIGHT...East winds 10 knots or less. Waves 1 foot or less. .SATURDAY...Southeast winds 10 to 15 knots becoming west 15 to 20 knots. Showers likely. Waves 2 feet or less building to 3 to 6 feet. .SUNDAY...West winds 15 to 25 knots becoming northwest. A chance of rain and snow showers during the day, then a chance of rain showers Sunday night. Waves 5 to 8 feet. Waves occasionally around 10 feet. .MONDAY...Northwest winds 15 to 25 knots becoming southwest and diminishing to 10 to 15 knots. Waves 4 to 7 feet subsiding to 2 to 3 feet. Waves occasionally around 9 feet. Winds and waves higher in and near thunderstorms. $$ LOZ063>065-160300- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 403 PM EDT Wed Apr 15 2026 .TONIGHT...South winds 5 to 10 knots. A chance of showers through the early overnight, then showers likely late. Waves 2 feet or less. .THURSDAY...South winds 5 to 10 knots becoming southwest. Showers. Waves 2 feet or less. .THURSDAY NIGHT...Southwest winds 5 to 10 knots becoming west. Showers in the evening, then showers likely overnight. Waves 2 feet or less. .FRIDAY...Northwest winds 5 to 10 knots becoming west. A chance of showers in the morning. Waves 2 feet or less. .FRIDAY NIGHT...Northwest winds 10 knots or less becoming southeast. Waves 1 foot or less. .SATURDAY...Southeast winds 15 to 25 knots becoming southwest. Showers likely. Waves 1 to 3 feet building to 4 to 7 feet. Waves occasionally around 9 feet. .SUNDAY...West winds to 30 knots becoming northwest. Rain showers likely during the day, then a chance of rain and snow showers Sunday night. Waves 5 to 9 feet building to 7 to 10 feet. Waves occasionally around 13 feet. .MONDAY...Northwest winds 15 to 25 knots becoming west. Waves 5 to 9 feet subsiding to 3 to 5 feet. Waves occasionally around 11 feet. Winds and waves higher in and near thunderstorms. $$ LOZ061-160300- MAFOR 1521/ ONTARIO WEST 1/2 11510 12400 11500 11410 12510 11516. Waves 1 to 3 feet. ONTARIO EAST 1/2 11500 11300 12400 11406 12400 11406. Waves 2 feet or less. $$  070 FZUS61 KBUF 152004 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 404 PM EDT Wed Apr 15 2026 SLZ022-024-160300- Saint Lawrence River from Cape Vincent to Saint Regis 404 PM EDT Wed Apr 15 2026 .TONIGHT...East winds less than 10 knots. A chance of showers through the early overnight, then showers likely late. .THURSDAY...Southeast winds 10 knots or less becoming south. Showers likely in the morning, then showers in the afternoon. .THURSDAY NIGHT...South winds 10 knots or less becoming northwest. Showers with a chance of thunderstorms in the evening, then showers likely overnight. .FRIDAY...North winds 10 knots or less. A chance of showers in the morning. .FRIDAY NIGHT...Northeast winds less than 10 knots. Mainly clear in the evening, then becoming partly cloudy. .SATURDAY...Southeast winds 5 to 10 knots becoming southwest 10 to 15 knots. A chance of showers during the day, then showers Saturday night. .SUNDAY...Southwest winds 10 to 15 knots becoming west. Rain showers likely during the day, then a chance of rain showers Sunday night. .MONDAY...Northwest winds 5 to 10 knots becoming southwest. Mostly cloudy, then clearing. Winds and waves higher in and near thunderstorms. $$  356 FZUS63 KMKX 152036 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Milwaukee/Sullivan WI 336 PM CDT Wed Apr 15 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... A stationary front will remain parked over the middle third of the lake this afternoon, slowly sinking south to the southern end of the lake by noon Thursday. A Marine Dense Fog Advisory continues until Thursday morning while this front lingers. Winds will remain southerly south of the front and modestly breezy, while winds north of the front will remain light and variable to northerly during this time. The front will then clear the lake Thursday afternoon and northerly winds will prevail over whole lake. Winds will become light and variable briefly Thursday night as a weak ridge passes over the lake, with winds then becoming southerly and breezy Friday ahead of low pressure of 29.6 inches approaching from the west. Gusty northwest winds then return following a cold front Friday night. Additional thunderstorms are forecast over the southern third of Lake Michigan this evening into tonight. A few storms could be severe with large hail being the primary concern. Additional storms are possible Friday into Saturday, with a few stronger storms possible. LMZ261-362-364-366-563-565-567-868-160315- 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- 336 PM CDT Wed Apr 15 2026 SHEBOYGAN WI TO PENTWATER MI NORTH... ...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT THURSDAY... .TONIGHT...East winds 5 to 10 kt becoming northeast. Areas of dense fog. Chance of rain showers and slight chance of thunderstorms. Waves 1 to 2 ft. .THURSDAY...North winds 10 to 15 kt. Chance of rain showers and slight chance of thunderstorms in the morning. Areas of dense fog in the morning, then patchy fog in the afternoon. Waves 1 to 3 ft. .THURSDAY NIGHT...Northwest winds 5 to 10 kt veering to southeast. Patchy fog in the evening. Waves 1 to 2 ft subsiding to 1 ft or less. .FRIDAY...Southeast winds 10 to 20 kt becoming south 15 to 25 kt. Waves 1 to 3 ft building to 4 to 6 ft occasionally to 8 ft. .FRIDAY NIGHT...South winds to 30 kt. Rain showers. Waves 5 to 8 ft occasionally to 10 ft. .SATURDAY...West winds to 30 kt diminishing to 15 to 25 kt. Rain showers in the morning, then chance of rain showers in the afternoon. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally to 9 ft. .SATURDAY NIGHT...West winds to 30 kt. Waves 4 to 7 ft occasionally to 9 ft building to 5 to 8 ft occasionally to 10 ft. .SUNDAY...Northwest winds to 30 kt. Waves 6 to 9 ft occasionally to 12 ft. .MONDAY...West winds 10 to 20 kt becoming south. Waves 3 to 5 ft. $$ LMZ080-669-671-673-675-777-779-870-872-874-876-878-160315- 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- 336 PM CDT Wed Apr 15 2026 SHEBOYGAN WI TO PENTWATER MI SOUTH... ...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT THURSDAY... .TONIGHT...South winds 10 to 20 kt becoming southwest 15 to 25 kt. Patchy dense fog this evening, then areas of dense fog overnight. Rain showers likely with a chance of thunderstorms this evening, then chance of rain showers and thunderstorms overnight. Waves 1 to 3 ft. .THURSDAY...West winds 10 to 20 kt becoming north 10 to 15 kt. Areas of dense fog in the morning, then patchy fog in the afternoon. Chance of rain showers and slight chance of thunderstorms in the morning, then slight chance of rain showers in the afternoon. Waves 1 to 3 ft. .THURSDAY NIGHT...North winds 10 to 15 kt veering to south. Patchy fog in the evening. Waves 1 to 3 ft. .FRIDAY...Southeast winds 10 to 15 kt increasing to 15 to 25 kt in the afternoon. Waves 1 to 3 ft building to 4 to 6 ft occasionally to 8 ft. .FRIDAY NIGHT...Southeast winds to 30 kt becoming south. Rain showers likely with a chance of thunderstorms in the evening, then rain showers with a chance of thunderstorms overnight. Waves 5 to 8 ft occasionally to 10 ft. .SATURDAY...West winds 15 to 25 kt. Rain showers in the morning, then chance of rain showers in the afternoon. Waves 5 to 8 ft occasionally to 10 ft. .SATURDAY NIGHT...West winds to 30 kt. Waves 6 to 9 ft occasionally to 12 ft. .SUNDAY...Northwest winds to 30 kt diminishing to 15 to 25 kt. Waves 7 to 10 ft occasionally to 13 ft. .MONDAY...East winds 10 to 20 kt becoming southeast. Waves 3 to 5 ft. $$ LMZ761-160315- MAFOR 1522/ MICHIGAN NORTH 11104 11206 19204 11104 11114 11804 11814 11820 11810. Waves 2 feet or less. MICHIGAN SOUTH 12426 19424 11436 19434 11434 11634 11620 19624 11720 11710. A chance of thunderstorms tonight. Waves 1 to 2 feet. $$ CMiller Experimental modernized open lake forecast is available online at weather.gov/mkx/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes