398 FZUS61 KCLE 200738 GLFLE Open Lake Forecast for Lake Erie National Weather Service Cleveland OH 338 AM EDT Wed May 20 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 cold front exits to the southeast this morning. High pressure 30.40 inches slides across the northern Great Lakes tonight and Thursday before shifting into New England on Friday. Low pressure 30.00 inches approaches from the southwest Friday night into Saturday, lifting a warm front across the lake early Saturday. A weak cold front is expected to cross the lake on Sunday. LEZ162-163-201415- 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- 338 AM EDT Wed May 20 2026 .TODAY...North winds 5 to 15 knots becoming northeast. A chance of showers early, then a slight chance of showers late this morning. Waves 1 to 3 feet. .TONIGHT...Northeast winds 10 to 15 knots increasing to 15 to 20 knots. Waves 1 to 3 feet building to 2 to 4 feet. .THURSDAY...Northeast winds 15 to 20 knots. Waves 2 to 4 feet building to 3 to 5 feet. .THURSDAY NIGHT...East winds 15 to 20 knots. Waves 3 to 5 feet. .FRIDAY...East winds 15 to 25 knots. Rain likely during the day, then rain with a chance of thunderstorms Friday night. Waves 3 to 5 feet. .SATURDAY...Southeast winds 15 to 20 knots becoming south 5 to 15 knots. Rain likely with a chance of thunderstorms during the day. Waves 2 to 4 feet subsiding to 1 foot or less. .SUNDAY...Southwest winds 10 knots or less becoming north. A chance of showers. Waves 1 foot or less. Winds and waves higher in and near thunderstorms. $$ LEZ164>168-201415- The Islands to Vermilion OH beyond 5 nm off shoreline to US- Canadian border- Vermilion to Avon Point OH beyond 5 nm off shoreline to US- Canadian border- Avon Point to Willowick OH beyond 5 nm off shoreline to US- Canadian border-Willowick to Geneva-on-the- Lake OH beyond 5NM off shoreline to US-Canadian border-Geneva-on- the-Lake to Conneaut OH beyond 5 nm off shoreline to US- Canadian border- 338 AM EDT Wed May 20 2026 .TODAY...North winds 15 to 20 knots diminishing to 10 to 15 knots. A slight chance of showers through early afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet. .TONIGHT...North winds 10 to 15 knots becoming northeast 15 to 20 knots. Waves 2 to 4 feet. .THURSDAY...Northeast winds 15 to 20 knots. Waves 2 to 4 feet building to 3 to 6 feet. .THURSDAY NIGHT...Northeast winds 15 to 20 knots becoming east. Waves 3 to 6 feet. .FRIDAY...East winds 15 to 20 knots. A chance of rain during the day, then rain with a chance of thunderstorms Friday night. Waves 3 to 6 feet. .SATURDAY...Southeast winds 15 to 20 knots becoming south 10 to 15 knots. Rain with a chance of thunderstorms during the day, then a chance of showers Saturday night. Waves 3 to 5 feet subsiding to 1 to 3 feet. .SUNDAY...South winds 10 knots or less becoming southwest. A chance of showers. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$ LEZ061-169-201415- 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- 338 AM EDT Wed May 20 2026 .TODAY...Northwest winds 5 to 15 knots becoming west. A slight chance of showers this morning. Waves 1 to 3 feet. .TONIGHT...Northwest winds 5 to 15 knots becoming northeast. Waves 1 to 3 feet. .THURSDAY...Northeast winds 15 to 20 knots. Waves 2 to 4 feet building to 3 to 5 feet. .THURSDAY NIGHT...Northeast winds 15 to 20 knots becoming east. Waves 2 to 4 feet subsiding to 1 to 3 feet. .FRIDAY...Northeast winds 10 to 15 knots becoming east 15 to 20 knots. A chance of rain during the day, then rain Friday night. Waves 1 to 3 feet. .SATURDAY...East winds 15 to 20 knots becoming southeast 10 to 15 knots. Rain with a chance of thunderstorms during the day, then showers likely Saturday night. Waves 1 to 3 feet. .SUNDAY...South winds 10 knots or less. A chance of showers during the day, then showers likely Sunday night. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$ LEZ161-201415- MAFOR 2009/ ERIE WEST 1/3 11810 12110 11100 13110 11120. A chance of showers this morning. Waves 1 to 3 feet today. Waves 1 to 3 feet building to 2 to 4 feet tonight. ERIE CENTRAL 1/3 15810 11810 11110. A chance of showers early this morning. Waves 2 to 4 feet subsiding to 1 to 3 feet today. Waves 2 to 4 feet tonight. ERIE EAST 1/3 11710 11800 11700 11600 11610 11710 11810 11110. A chance of showers early this morning. Waves 1 to 3 feet. $$  633 FZUS63 KDTX 200743 GLFLH Open Lake Forecast for Lake Huron National Weather Service Detroit/Pontiac MI 343 AM EDT Wed May 20 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...High pressure, 30.40 inches, will start to build in over the Great Lakes this morning then slowly move east across the region through Friday morning. As this occurs, northwest flow will veer to the northeast and persist into Friday. LHZ361-201600- Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore- 343 AM EDT Wed May 20 2026 .TODAY...Northwest winds 20 to 25 knots with gusts to around 30 knots decreasing to 15 to 20 knots in the late morning and afternoon. Waves 4 to 6 feet. .TONIGHT...Northwest winds 15 to 20 knots becoming north 10 to 15 knots by midnight...then decreasing to 5 to 10 knots early in the morning. Waves 2 to 4 feet subsiding to 1 to 3 feet early in the morning. Waves occasionally around 8 feet. .THURSDAY...East winds 5 to 10 knots veering to the southeast early in the afternoon. Waves 2 feet or less. .THURSDAY NIGHT...East winds 5 to 10 knots early in the evening becoming light and variable...then becoming east 5 to 10 knots after midnight. Waves 2 feet or less. .FRIDAY...East winds 5 to 10 knots increasing to 20 to 25 knots with gusts to around 30 knots. A chance of showers late in the evening. Waves 1 to 3 feet building to 6 to 9 feet. Waves occasionally around 12 feet. .SATURDAY...East winds to 30 knots with gusts to 35 knot gales decreasing to 15 to 20 knots by midnight. Showers likely early in the morning...then a chance of showers. Waves 8 to 12 feet. Waves occasionally around 15 feet. .SUNDAY...East winds 10 to 15 knots becoming southeast 5 to 10 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet. $$ LHZ362-363-201600- Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore- Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore- 343 AM EDT Wed May 20 2026 .TODAY...Northwest winds 15 to 20 knots veering to the north late in the afternoon. Waves 5 to 7 feet. Waves occasionally around 10 feet. .TONIGHT...North winds 15 to 20 knots decreasing to 10 to 15 knots after midnight. Waves 3 to 5 feet. .THURSDAY...Northeast winds 10 to 15 knots decreasing to 5 to 10 knots in the late morning and afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and afternoon. .THURSDAY NIGHT...Northeast winds 5 to 10 knots. Waves 1 to 3 feet. .FRIDAY...East winds 10 to 15 knots becoming northeast 15 to 20 knots late in the afternoon. A chance of showers late in the evening. Waves 1 to 3 feet building to 5 to 7 feet. Waves occasionally around 10 feet. .SATURDAY...East winds 20 to 25 knots with gusts to around 30 knots decreasing to 10 to 15 knots. Showers likely early in the morning...then a chance of showers. Waves 8 to 12 feet. Waves occasionally around 15 feet. .SUNDAY...Southeast winds 10 to 15 knots becoming light and variable. Waves 3 to 5 feet subsiding to 1 to 3 feet. $$ LHZ462>464-201600- 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- 343 AM EDT Wed May 20 2026 .TODAY...North winds 10 to 15 knots. Waves 3 to 5 feet. .TONIGHT...North winds 10 to 15 knots. Waves 3 to 5 feet. .THURSDAY...Northeast winds 10 to 15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and early afternoon...then building to 2 to 4 feet early in the afternoon. .THURSDAY NIGHT...North winds 10 to 15 knots veering tothe east after midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. .FRIDAY...East winds 10 to 15 knots increasing to 15 to 20 knots with gusts to around 30 knots late in the afternoon. A chance of showers late in the afternoon. Rain showers likely late in the evening. Waves 3 to 5 feet building to 5 to 7 feet late in the evening. Waves occasionally around 10 feet. .SATURDAY...East winds 20 to 25 knots with gusts to around 30 knots becoming southeast 10 to 15 knots. Showers likely early in the morning. Rain showers in the late morning and early afternoon...then a chance of showers early in the evening. Waves 5 to 7 feet. Waves occasionally around 10 feet. .SUNDAY...Southeast winds 5 to 10 knots backing to the east by midnight. Waves 1 to 3 feet. $$ LHZ461-201600- MAFOR 2009/ HURON NORTH 15720 11710 11100. Waves 4 to 6 feet subsiding to 3 to 5 feet. Occasional wave height around 8 feet today. Waves 3 to 5 feet subsiding to 1 to 3 feet tonight. HURON SOUTH 12710 11820 11810 11820 13810. Waves 3 to 5 feet today. Waves 3 to 5 feet subsiding to 2 to 4 feet tonight. $$ TF 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)  648 FZUS63 KDTX 200743 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 343 AM EDT Wed May 20 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...High pressure, 30.40 inches, will start to build in over the Great Lakes this morning then slowly move east across the region through Friday morning. As this occurs, northwest flow will veer to the northeast and persist into Friday. LCZ460-201600- Lake St Clair- 343 AM EDT Wed May 20 2026 .TODAY...North winds 15 to 20 knots diminishing to 10 to 15 knots late in the morning...then diminishing to 5 to 10 knots early in the afternoon becoming northeast 10 to 15 knots late in the afternoon. Mostly cloudy. Waves 2 feet or less. .TONIGHT...Northeast winds 15 to 20 knots. Mostly cloudy this evening becoming partly cloudy. Waves 1 to 3 feet. .THURSDAY...Northeast winds 10 to 15 knots. Mostly sunny. Waves 2 feet or less. .THURSDAY NIGHT...Northeast winds 10 to 15 knots increasing to 15 to 20 knots after midnight. Partly cloudy becoming mostly cloudy. Waves 1 to 3 feet. .FRIDAY...East winds 20 to 25 knots increasing to 30 knots in the evening. Mostly cloudy. A chance of light showers in the afternoon. Rain showers likely in the evening. Waves 2 to 4 feet. A Small Craft Advisory may be needed. .SATURDAY...Southeast winds to 30 knots. Showers and a chance of thunderstorms. Waves 2 to 4 feet. .SUNDAY...Northeast winds 10 to 15 knots. Mostly cloudy. Waves 2 feet or less. $$ TF Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes  308 FZUS63 KMQT 200757 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 356 AM EDT Wed May 20 2026 For waters beyond 5 nautical miles of shore on Lake Superior. Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. .SYNOPSIS... A 30.3 inch high over the Northern Plains shifts over Lake Superior today and builds to 30.4 inches tonight. The high pressure shifts east Thursday night while leaving lingering ridging of at least 30.3 inches over Lake Superior through Friday. A 29.9 inch low then lifts into the Lower Great Lakes from the Southern Plains Friday night and Saturday, but 30.1 inch ridging persists over Lake Superior the remainder of the weekend. LSZ162-202000- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 356 AM EDT Wed May 20 2026 /256 AM CDT Wed May 20 2026/ .EARLY THIS MORNING...Northwest winds 5 to 15 knots. Waves calm to 2 feet. .TODAY...West winds 5 to 15 knots backing south in the afternoon. Waves calm to 2 feet. .TONIGHT...Southeast winds 5 to 15 knots backing northeast late. Waves calm to 2 feet. .THURSDAY...East winds 5 to 15 knots. Waves calm to 2 feet. .THURSDAY NIGHT...Northeast winds 5 to 15 knots. Waves calm to 2 feet. .FRIDAY...East winds 10 to 20 knots becoming northeast 15 to 25 knots by mid afternoon. Waves building to 2 to 4 feet. .FRIDAY NIGHT...Northeast winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. Waves subsiding to 1 to 3 feet. .SATURDAY...Northeast winds 10 to 20 knots diminishing to 5 to 15 knots. A chance of rain showers. Waves building to 2 to 4 feet, then subsiding to calm to 2 feet. .SUNDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet. $$ LSZ263-202000- 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- 356 AM EDT Wed May 20 2026 .EARLY THIS MORNING...Northwest winds 5 to 15 knots. Waves calm to 2 feet. .TODAY...Northwest winds 5 to 15 knots backing southwest in the afternoon, then backing south late. Waves calm to 2 feet. .TONIGHT...Southeast winds 5 to 15 knots diminishing to less than 10 knots after midnight, then becoming south 5 to 15 knots late. Waves calm to 2 feet. .THURSDAY...South winds 5 to 15 knots backing east late. Waves calm to 2 feet. .THURSDAY NIGHT...East winds 5 to 15 knots veering southeast after midnight. Waves calm to 2 feet. .FRIDAY...East winds 5 to 15 knots increasing to 10 to 20 knots by mid afternoon. Waves building to 2 to 4 feet. .FRIDAY NIGHT...East winds 10 to 20 knots diminishing to 5 to 15 knots after midnight. Waves subsiding to 1 to 3 feet. .SATURDAY...East winds 10 to 20 knots diminishing to 5 to 15 knots. A chance of rain showers. Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. .SUNDAY...Southwest winds 5 to 15 knots. Waves subsiding to calm to 2 feet. $$ LSZ264-202000- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 356 AM EDT Wed May 20 2026 .EARLY THIS MORNING...Northwest winds 5 to 15 knots. Waves 1 to 3 feet. .TODAY...Northwest winds 5 to 15 knots backing southwest late. Waves subsiding to calm to 2 feet. .TONIGHT...Southwest winds 5 to 15 knots becoming south less than 10 knots after midnight. Waves calm to 2 feet. .THURSDAY...South winds 5 to 15 knots backing southeast in the afternoon. Waves calm to 2 feet. .THURSDAY NIGHT...Southeast winds 5 to 15 knots. Waves calm to 2 feet. .FRIDAY...Southeast winds 5 to 15 knots becoming east 10 to 20 knots by mid afternoon. Waves calm to 2 feet. .FRIDAY NIGHT...East winds 10 to 20 knots diminishing to 5 to 15 knots after midnight. Waves building to 1 to 3 feet. .SATURDAY...East winds 10 to 20 knots becoming southeast 5 to 15 knots. A chance of rain showers. Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. .SUNDAY...Southwest winds 5 to 15 knots. Waves subsiding to calm to 2 feet. $$ LSZ265-202000- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 356 AM EDT Wed May 20 2026 .EARLY THIS MORNING...Northwest winds 5 to 15 knots. Waves 1 to 3 feet. .TODAY...Northwest winds 5 to 15 knots veering north in the afternoon, then veering southeast late. Waves subsiding to calm to 2 feet. .TONIGHT...Southeast winds 5 to 15 knots veering south after midnight. Waves calm to 2 feet. .THURSDAY...South winds 5 to 15 knots becoming east 10 to 20 knots in the afternoon, then increasing to 15 to 25 knots late. Waves calm to 2 feet. .THURSDAY NIGHT...Southeast winds 10 to 20 knots diminishing to 5 to 15 knots after midnight. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. .FRIDAY...East winds 10 to 20 knots increasing to 15 to 25 knots by mid afternoon. Waves building to 2 to 4 feet. .FRIDAY NIGHT...East winds 15 to 25 knots. Waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. .SATURDAY...East winds 15 to 25 knots becoming southeast 10 to 20 knots. A chance of rain showers. Waves building to 3 to 6 feet occasionally to 8 feet, then subsiding to 1 to 3 feet. .SUNDAY...Southwest winds 10 to 20 knots backing south. Waves subsiding to calm to 2 feet. $$ LSZ266-202000- Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore- 356 AM EDT Wed May 20 2026 .EARLY THIS MORNING...Northwest winds 15 to 25 knots. Waves 3 to 6 feet occasionally to 8 feet. .TODAY...Northwest winds 10 to 20 knots diminishing to 5 to 15 knots in the afternoon, then backing west late. Waves subsiding to calm to 2 feet. .TONIGHT...West winds 5 to 15 knots backing south after midnight. Waves calm to 2 feet. .THURSDAY...South winds 5 to 15 knots backing southeast in the afternoon, then becoming east 10 to 20 knots late. Waves calm to 2 feet. .THURSDAY NIGHT...Southeast winds 10 to 20 knots becoming south 5 to 15 knots after midnight. Waves calm to 2 feet. .FRIDAY...Southeast winds 5 to 15 knots becoming east 10 to 20 knots by mid afternoon. Waves building to 1 to 3 feet. .FRIDAY NIGHT...East winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. Waves building to 2 to 4 feet. .SATURDAY...East winds 15 to 25 knots becoming southeast 10 to 20 knots. A chance of rain showers. Waves building to 3 to 6 feet occasionally to 8 feet, then subsiding to 1 to 3 feet. .SUNDAY...Southwest winds 5 to 15 knots backing south. Waves subsiding to calm to 2 feet. $$ LSZ267-202000- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 356 AM EDT Wed May 20 2026 .EARLY THIS MORNING...Northwest winds 20 to 30 knots. Waves 4 to 7 feet occasionally to 9 feet subsiding to 3 to 6 feet occasionally to 8 feet. .TODAY...Northwest winds 15 to 25 knots diminishing to 10 to 20 knots late. Waves subsiding to 1 to 3 feet. .TONIGHT...Northwest winds 5 to 15 knots veering north after midnight, then veering south late. Waves subsiding to calm to 2 feet. .THURSDAY...South winds 5 to 15 knots backing northeast in the afternoon, then veering east late. Waves calm to 2 feet. .THURSDAY NIGHT...Southeast winds 5 to 15 knots. Waves calm to 2 feet. .FRIDAY...East winds 5 to 15 knots. Waves calm to 2 feet. .FRIDAY NIGHT...East winds 10 to 20 knots increasing to 15 to 25 knots after midnight. Waves building to 2 to 4 feet. .SATURDAY...East winds 15 to 25 knots becoming southeast 10 to20 knots. A chance of rain showers. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to calm to 2 feet. .SUNDAY...South winds 5 to 15 knots. Waves calm to 2 feet. $$ LSZ261-201400- MAFOR 2009/ Superior West 12700 11500 11410 11400 13300. Waves 1 foot or less. Superior North Central 13710 11500 12510 12400. Waves 1 to 3 feet today. Waves 1 foot or less tonight. Superior South Central 11720 12710 11800 11300 13400. Waves 2 to 4 feet subsiding to 1 to 3 feet today. Waves 1 foot or less tonight. Superior East 11730 13720 11610 11710 11700 11200. Waves 4 to 7 feet subsiding to 2 to 3 feet today. Waves 1 to 3 feet subsiding to 1 foot or less tonight. $$ 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  410 FZUS63 KMKX 200759 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Milwaukee/Sullivan WI 259 AM CDT Wed May 20 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 will come around from northwesterly to northeasterly through the first half of the day as high pressure around 30.4 inches builds into the Upper Great Lakes region today and then lingers into Thursday. Still looking at gusty northeast winds through midweek, especially over the southern half of the lake and building waves along the western lakeshore. High pressure continues to build to around 30.5 inches as it lifts northeastward across Ontario and Quebec Friday through the weekend with easterly winds persisting across Lake Michigan. Expecting winds to increase during this timeframe as well with a broad low pressure trough around 29.8 inches setting up over the Plains. LMZ261-362-364-366-563-565-567-868-201515- 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- 259 AM CDT Wed May 20 2026 SHEBOYGAN WI TO PENTWATER MI NORTH... .TODAY...North winds 10 to 20 kt becoming northeast 15 to 25 kt. Waves 2 to 4 ft. .TONIGHT...Northeast winds 10 to 20 kt diminishing to 10 to 15 kt. Waves 2 to 4 ft. .THURSDAY...Northeast winds 10 to 15 kt increasing to 10 to 20 kt. Waves 1 to 3 ft. .THURSDAY NIGHT...Northeast winds 10 to 20 kt becoming east 10 to 15 kt. Waves 1 to 3 ft. .FRIDAY...East winds 10 to 20 kt becoming northeast 15 to 25 kt. Waves 1 to 3 ft building to 3 to 5 ft. .FRIDAY NIGHT...East winds 15 to 25 kt increasing to 30 kt. Chance of showers. Waves 4 to 6 ft occasionally to 8 ft. .SATURDAY...East winds to 30 kt becoming northeast. Chance of showers. Waves 4 to 7 ft occasionally to 9 ft. .SUNDAY...Southwest winds 10 to 15 kt. Waves 1 to 2 ft. $$ LMZ080-669-671-673-675-777-779-870-872-874-876-878-201515- Lake Michigan from Michigan City IN to St. Joseph MI 5 NM offshore to Mid Lake- Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore to Mid Lake- Lake Michigan from Port Washington to North Point Light WI 5 NM offshore to Mid Lake- Lake Michigan from North Point Light to Wind Point WI 5 NM offshore to Mid Lake- Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM offshore to Mid Lake- Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM offshore to Mid Lake- Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM offshore to Mid Lake- Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid Lake- Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to Mid Lake- Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid Lake- Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid Lake- Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to Mid Lake- 259 AM CDT Wed May 20 2026 SHEBOYGAN WI TO PENTWATER MI SOUTH... .TODAY...North winds 10 to 20 kt increasing to 15 to 25 kt. Waves 3 to 5 ft building to 4 to 6 ft occasionally to 8 ft. .TONIGHT...North winds 15 to 25 kt becoming northeast 10 to 20 kt. Waves 4 to 6 ft occasionally to 8 ft. .THURSDAY...East winds 10 to 20 kt becoming north. Waves 3 to 5 ft subsiding to 2 to 4 ft. .THURSDAY NIGHT...Northeast winds 10 to 20 kt becoming east. Waves 3 to 5 ft. .FRIDAY...East winds 10 to 20 kt becoming northeast 15 to 25 kt. Chance of showers in the afternoon. Waves 3 to 5 ft. .FRIDAY NIGHT...East winds 15 to 25 kt. Showers likely. Waves 4 to 6 ft occasionally to 8 ft. .SATURDAY...East winds 10 to 20 kt becoming north 10 to 15 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. .SUNDAY...South winds 5 to 10 kt. Waves 1 ft or less. $$ LMZ761-201515- MAFOR 2010/ MICHIGAN NORTH 13820 11130 12120 12110. Waves 1 to 3 feet. MICHIGAN SOUTH 12820 13830 11130 12120. Waves 2 to 4 feet building to 3 to 6 feet today. Waves 3 to 6 feet tonight. $$ CMiller Experimental modernized open lake forecast is available online at weather.gov/mkx/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes