852 FZUS63 KMQT 080201 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 1001 PM EDT Tue Jul 7 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... Pressure at 30.0 inches prevails over Lake Superior this evening as a 30.1 inch high over the Northern Plains extends over the Upper Great Lakes through tonight. A Hudson low moves into northern Quebec throughout Wednesday, sending a trough as low as 29.9 inches over the Upper Great Lakes. Weak high pressure to 30.0 inches then builds over Lake Superior and northern Ontario Thursday and Friday. Saturday, the high builds to 30.1 inches as it shifts towards southern Ontario. The high continues to shift south Sunday into Monday as low pressure of at least 29.7 inches moves across northern Ontario. LSZ162-080800- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 1001 PM EDT Tue Jul 7 2026 /901 PM CDT Tue Jul 7 2026/ .REST OF TONIGHT...South winds 5 to 15 knots veering west after midnight, then veering northwest late. A chance of showers. A slight chance of thunderstorms after midnight. Waves calm to 2 feet. .WEDNESDAY...North winds 5 to 15 knots veering south late. A chance of showers and a slight chance of thunderstorms through early afternoon. Waves calm to 2 feet. .WEDNESDAY NIGHT...North winds less than 10 knots. Waves calm to 2 feet. .THURSDAY...North winds less than 10 knots. Waves calm to 2 feet. .THURSDAY NIGHT...North winds less than 10 knots. Waves calm to 2 feet. .FRIDAY...East winds less than 10 knots becoming northeast 5 to 15 knots by mid afternoon. Waves calm to 2 feet. .FRIDAY NIGHT...Northeast winds less than 10 knots backing north after midnight. Waves calm to 2 feet. .SATURDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet. .SUNDAY...Southwest winds 10 to 20 knots. Waves building to 1 to 3 feet. $$ LSZ263-080800- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 1001 PM EDT Tue Jul 7 2026 .REST OF TONIGHT...Southwest winds 5 to 15 knots veering west after midnight, then diminishing to less than 10 knots late. A chance of showers after midnight. Waves calm to 2 feet. .WEDNESDAY...West winds less than 10 knots becoming northeast 5 to 15 knots in the afternoon, then veering southwest late. A slight chance of thunderstorms through early afternoon. A chance of showers. Waves calm to 2 feet. .WEDNESDAY NIGHT...West winds 5 to 15 knots diminishing to less than 10 knots after midnight, then backing southwest late. Waves calm to 2 feet. .THURSDAY...North winds less than 10 knots becoming northeast 5 to 15 knots by mid afternoon. Waves calm to 2 feet. .THURSDAY NIGHT...East winds less than 10 knots veering southeast after midnight. Waves calm to 2 feet. .FRIDAY...East winds less than 10 knots. Waves calm to 2 feet. .FRIDAY NIGHT...East winds less than 10 knots veering southwest after midnight. Waves calm to 2 feet. .SATURDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet. .SUNDAY...Southwest winds 15 to 25 knots. Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. $$ LSZ264-080800- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 1001 PM EDT Tue Jul 7 2026 .REST OF TONIGHT...Southwest winds 5 to 15 knots becoming west less than 10 knots late. A chance of showers after midnight. Waves calm to 2 feet. .WEDNESDAY...West winds less than 10 knots backing south in the afternoon, then becoming southwest 5 to 15 knots late. A chance of showers through early afternoon. Waves calm to 2 feet. .WEDNESDAY NIGHT...Southwest winds less than 10 knots veering northwest late. Waves calm to 2 feet. .THURSDAY...North winds less than 10 knots backing west by mid afternoon. Waves calm to 2 feet. .THURSDAY NIGHT...West winds less than 10 knots veering northwest after midnight. Waves calm to 2 feet. .FRIDAY...East winds less than 10 knots veering southeast by mid afternoon. Waves calm to 2 feet. .FRIDAY NIGHT...Southeast winds 5 to 15 knots becoming south less than 10 knots after midnight. Waves calm to 2 feet. .SATURDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet. .SUNDAY...Southwest winds 10 to 20 knots. Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. $$ LSZ265-080800- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 1001 PM EDT Tue Jul 7 2026 .REST OF TONIGHT...South winds 5 to 15 knots. A slight chance of showers after midnight. Waves calm to 2 feet. .WEDNESDAY...Southwest winds 5 to 15 knots backing east in the afternoon. Showers likely through early afternoon, then a chance of showers and thunderstorms by mid afternoon. Waves calm to 2 feet. .WEDNESDAY NIGHT...Southeast winds 5 to 15 knots backing northeast late. A slight chance of showers. Waves calm to 2 feet. .THURSDAY...North winds 5 to 15 knots. Waves calm to 2 feet. .THURSDAY NIGHT...Northwest winds 5 to 15 knots veering north after midnight. Waves calm to 2 feet. .FRIDAY...East winds 5 to 15 knots. Waves calm to 2 feet. .FRIDAY NIGHT...Southeast winds 5 to 15 knots veering south after midnight. Waves calm to 2 feet. .SATURDAY...Southeast winds 5 to 15 knots veering southwest. Waves calm to 2 feet. .SUNDAY...Southwest winds 10 to 20 knots. Waves building to 1 to 3 feet. $$ LSZ266-080800- 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 Tue Jul 7 2026 .REST OF TONIGHT...South winds 5 to 15 knots. A slight chance of showers after midnight. Waves calm to 2 feet. .WEDNESDAY...Southwest winds 5 to 15 knots backing northeast in the afternoon. Showers likely through early afternoon, then a chance of showers and a slight chance of thunderstorms by mid afternoon. Waves calm to 2 feet. .WEDNESDAY NIGHT...Northeast winds 5 to 15 knots backing north late. A chance of showers and a slight chance of thunderstorms through midnight. Waves calm to 2 feet. .THURSDAY...North winds 5 to 15 knots backing northwest by mid afternoon. Waves calm to 2 feet. .THURSDAY NIGHT...Northwest winds 5 to 15 knots veering north after midnight. Waves calm to 2 feet. .FRIDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet. .FRIDAY NIGHT...Southeast winds 5 to 15 knots veering south after midnight. Waves calm to 2 feet. .SATURDAY...South winds 5 to 15 knots. Waves calm to 2 feet. .SUNDAY...Southwest winds 5 to 15 knots increasing to 10 to 20 knots. Waves building to 1 to 3 feet. $$ LSZ267-080800- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 1001 PM EDT Tue Jul 7 2026 .REST OF TONIGHT...West winds less than 10 knots becoming east 5 to 15 knots after midnight. A slight chance of showers after midnight. Waves calm to 2 feet. .WEDNESDAY...North winds 5 to 15 knots. A chance of showers. A slight chance of thunderstorms by mid afternoon. Waves calm to 2 feet. .WEDNESDAY NIGHT...North winds 5 to 15 knots. A slight chance of thunderstorms through midnight. A chance of showers. Waves calm to 2 feet. .THURSDAY...Northwest winds 10 to 20 knots. Waves calm to 2 feet. .THURSDAY NIGHT...Northwest winds 5 to 15 knots. Waves calm to 2 feet. .FRIDAY...North winds 5 to 15 knots. Waves calm to 2 feet. .FRIDAY NIGHT...Northeast winds 5 to 15 knots veering south after midnight. Waves calm to 2 feet. .SATURDAY...Southeast winds 5 to 15 knots veering south. Waves calm to 2 feet. .SUNDAY...Southwest winds 5 to 15 knots backing south. Waves calm to 2 feet. $$ LSZ261-080800- MAFOR 0803/ Superior West 11500 11600 11706 11806 11800 12300 11800. Waves 1 foot or less. Superior North Central 13500 11606 11600 13500. Waves 1 foot or less. Superior South Central 11400 11300 11400 11406 11306 11100 11200 11300. A chance of thunderstorms Wednesday afternoon and Wednesday evening. Waves 1 foot or less. Superior East 11400 12300 11700 13800 11700. A chance of showers Wednesday and Wednesday evening. Waves 1 foot or less. $$ WFO MQT Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes  920 FZUS61 KBUF 080202 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1002 PM EDT Tue Jul 7 2026 For waters beyond five nautical miles of shore on Lake Ontario Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. .SYNOPSIS...A 29.9 inch low continues to move off the southern New England coast, while a broad 30.1 inch high builds across the lower Great Lakes tonight through Wednesday. A weak cold front will cross the Lake Thursday night through early Friday with another 30.1 inch high building across the upper Great Lakes Friday and the lower Great Lakes by Saturday night. LOZ062-080900- Lake Ontario open waters from the Niagara River to Hamlin Beach- 1002 PM EDT Tue Jul 7 2026 .OVERNIGHT...East winds 10 knots or less. Waves 2 feet or less. .WEDNESDAY...Southeast winds less than 10 knots. Waves 1 foot or less. .WEDNESDAY NIGHT...Southeast winds 10 knots or less becoming southwest. Waves 1 foot or less. .THURSDAY...Southwest winds 5 to 10 knots. A chance of showers and thunderstorms in the afternoon. Waves 2 feet or less. .THURSDAY NIGHT...Southwest winds 5 to 15 knots becoming west. Showers likely with a chance of thunderstorms in the evening, then showers likely overnight. Waves 1 to 2 feet. .FRIDAY...Northwest winds 10 knots or less becoming northeast. A chance of showers during the day. Waves 1 foot or less. .SATURDAY...Northeast winds 10 knots or less becoming east. Waves 1 foot or less. .SUNDAY...East winds 10 knots or less becoming southwest. Waves 1 foot or less. Winds and waves higher in and near thunderstorms. $$ LOZ063>065-080900- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 1002 PM EDT Tue Jul 7 2026 .OVERNIGHT...Southeast winds 5 to 10 knots. Waves 1 foot or less. .WEDNESDAY...South winds 10 knots or less becoming north. Waves 1 foot or less. .WEDNESDAY NIGHT...Southwest winds 10 knots or less. Waves 1 foot or less. .THURSDAY...Southwest winds 5 to 10 knots. Waves 1 foot or less. .THURSDAY NIGHT...Southwest winds 5 to 10 knots becoming west. Showers likely. Waves 2 feet or less. .FRIDAY...Northwest winds 5 to 10 knots becoming northeast. Showers likely during the day. Waves 2 feet or less. .SATURDAY...Northeast winds 10 knots or less becoming east. Waves 1 foot or less. .SUNDAY...Southeast winds 10 knots or less becoming southwest. Waves 1 foot or less. Winds and waves higher in and near thunderstorms. $$ LOZ061-080900- MAFOR 0803/ ONTARIO WEST 1/2 12200 12300 12100 11300 11400. Waves 1 foot or less. ONTARIO EAST 1/2 12300 13400 11800 11500 11400. Waves 1 foot or less. $$  961 FZUS61 KBUF 080203 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1003 PM EDT Tue Jul 7 2026 SLZ022-024-080900- Saint Lawrence River from Cape Vincent to Saint Regis 1003 PM EDT Tue Jul 7 2026 .OVERNIGHT...Light and variable winds. Partly cloudy. .WEDNESDAY...Southwest winds 10 knots or less. Sunny. .WEDNESDAY NIGHT...Southwest winds 10 knots or less. Partly cloudy. .THURSDAY...Southwest winds 10 knots or less becoming west. A chance of showers in the morning, then showers with a chance of thunderstorms in the afternoon. .THURSDAY NIGHT...Southwest winds 5 to 10 knots becoming light and variable. Showers with a chance of thunderstorms in the evening, then showers overnight. .FRIDAY...Northwest winds less than 10 knots becoming north. A chance of showers during the day. .SATURDAY...North winds less than 10 knots. Mainly clear. .SUNDAY...Light and variable winds. Mainly clear, then becoming partly cloudy. Winds and waves higher in and near thunderstorms. $$  980 FZUS61 KCLE 080203 GLFLE Open Lake Forecast for Lake Erie National Weather Service Cleveland OH 1003 PM EDT Tue Jul 7 2026 For waters beyond five nautical miles of shore on Lake Erie Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. .SYNOPSIS... A weak trough averaging 29.90 inches will linger near Lake Erie overnight. Weak high pressure 30.00 inches will build in Wednesday into Thursday. A cold front will cross the lake on Friday before high pressure 30.00 inches returns on Saturday. LEZ162-163-080815- Detroit River Lt. to Maumee Bay OH to Reno Beach OH beyond 5NM offshoreline to US-Canadian border- Reno Beach to The Islands OH beyond 5NM off shoreline to US- Canadian border- 1003 PM EDT Tue Jul 7 2026 .OVERNIGHT...East winds less than 10 knots. Waves 1 foot or less. .WEDNESDAY...North winds less than 10 knots. Waves 1 foot or less. .WEDNESDAY NIGHT...Southeast winds 10 knots or less becoming southwest. Waves 1 foot or less. .THURSDAY...Southwest winds 5 to 10 knots. Waves 1 foot or less. .THURSDAY NIGHT...West winds 5 to 10 knots. Showers with a chance of thunderstorms. Waves around 1 foot. .FRIDAY...West winds 5 to 10 knots becoming northeast. Showers likely with a chance of thunderstorms during the day, then a chance of showers Friday night. Waves 1 foot or less. .SATURDAY...Northeast winds 5 to 10 knots becoming east. Waves 1 foot or less. .SUNDAY...Northeast winds 5 to 10 knots becoming south. Waves 1 foot or less. Winds and waves higher in and near thunderstorms. $$ LEZ164>168-080815- 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- 1003 PM EDT Tue Jul 7 2026 .OVERNIGHT...North winds less than 10 knots becoming northeast. Waves 1 foot or less. .WEDNESDAY...Light and variable winds. Waves 1 foot or less. .WEDNESDAY NIGHT...Southwest winds 10 knots or less. Waves 1 foot or less. .THURSDAY...Southwest winds 5 to 10 knots. Waves 2 feet or less. .THURSDAY NIGHT...Southwest winds 5 to 10 knots becoming west. A chance of showers and thunderstorms in the evening, then showers with a chance of thunderstorms overnight. Waves 1 to 2 feet. .FRIDAY...West winds 5 to 10 knots becoming northeast. Showers likely with a chance of thunderstorms during the day, then a chance of showers Friday night. Waves 1 to 2 feet. .SATURDAY...Northeast winds 5 to 10 knots becoming east. Waves 2 feet or less. .SUNDAY...East winds 5 to 10 knots becoming south. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$ LEZ061-169-080815- Ripley to Buffalo NY extending from 5NM off shoreline to US- Canadian border- Conneaut OH to Ripley NY beyond 5 nm off shoreline to US- Canadian border- 1003 PM EDT Tue Jul 7 2026 .OVERNIGHT...Northeast winds 10 knots or less becoming east. Waves 1 foot or less. .WEDNESDAY...Light and variable winds. Waves 1 foot or less. .WEDNESDAY NIGHT...Southwest winds 10 knots or less. Waves 1 foot or less. .THURSDAY...Southwest winds 5 to 10 knots. Waves 2 feet or less. .THURSDAY NIGHT...West winds 5 to 10 knots becoming southwest. A chance of showers and thunderstorms in the evening, then showers with a chance of thunderstorms overnight. Waves 1 to 2 feet. .FRIDAY...West winds 10 knots or less becoming northeast. Showers likely with a chance of thunderstorms during the day. Waves 1 foot or less. .SATURDAY...Northeastwinds 10 knots or less becoming southeast. Waves 1 foot or less. .SUNDAY...East winds 10 knots or less becoming south. Waves 1 foot or less. Winds and waves higher in and near thunderstorms. $$ LEZ161-080815- MAFOR 0803/ ERIE WEST 1/3 13100 11700 12600 12400. Waves 1 foot or less. ERIE CENTRAL 1/3 11800 12100 11800 11700 11600 12500. Waves 1 foot or less. ERIE EAST 1/3 11100 11200 11300 11400 11700 11600 12500. Waves 1 foot or less. $$  206 FZUS63 KDTX 080208 GLFLH Open Lake Forecast for Lake Huron National Weather Service Detroit/Pontiac MI 1008 PM EDT Tue Jul 7 2026 For waters beyond five nautical miles off shore on Lake Huron Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. .SYNOPSIS...High pressure will wash out across the Appalachia region Wednesday which will veer winds to the south and southwest. A cold front will then push through the Great Lakes Thursday, bringing the likely chance for rain showers and embedded thunderstorms. Lingering shower and storm chances continue Friday across the southern Great Lakes. LHZ361-081015- Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore- 1008 PM EDT Tue Jul 7 2026 .REST OF TONIGHT...Light and variable winds. Waves 2 feet or less. .WEDNESDAY...Light and variable winds. A chance of showers. Waves 2 feet or less. .WEDNESDAY NIGHT...Light and variable winds becoming west 5 to 10 knots after midnight. A chance of showers. Waves 2 feet or less. .THURSDAY...North winds 5 to 10 knots backing to the west in the late morning and afternoon. A chance of showers. Waves 2 feet or less. .THURSDAY NIGHT...Northwest winds 5 to 10 knots. Waves 2 feet or less. .FRIDAY...North winds 5 to 10 knots in the morning becoming light and variable. Waves 2 feet or less. .SATURDAY...Light and variable winds becoming southeast 5 to 10 knots by midnight. Waves 2 feet or less. .SUNDAY...Southwest winds 5 to 10 knots. Waves 2 feet or less. $$ LHZ362-363-081015- 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- 1008 PM EDT Tue Jul 7 2026 .REST OF TONIGHT...Light and variable winds. Waves 2 feet or less. .WEDNESDAY...Light and variable winds becoming southeast 5 to 10 knots in the afternoon. A chance of showers in the afternoon. Waves 2 feet or less. .WEDNESDAY NIGHT...East winds 5 to 10 knots early in the evening becoming light and variable. A chance of showers after midnight. Waves 1 to 3 feet. .THURSDAY...Light and variable winds becoming southwest 5 to 10 knots in the late morning and afternoon. Showers likely. Waves 2 feet or less. .THURSDAY NIGHT...Light and variable winds becoming north 5 to 10 knots in the late evening and overnight. Waves 2 feet or less. .FRIDAY...North winds 5 to 10 knots becoming light and variable. Waves 2 feet or less. .SATURDAY...Light and variable winds. Waves 2 feet or less. .SUNDAY...Light and variable winds becoming south 5 to 10 knots. Waves 2 feet or less. $$ LHZ462>464-081015- Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore- Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore- Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore- 1008 PM EDT Tue Jul 7 2026 .REST OF TONIGHT...Light and variable winds. Patchy fog after midnight. Waves 2 feet or less. .WEDNESDAY...Light and variable winds becoming southeast 5 to 10 knots in the afternoon. Patchy fog in the morning. Waves 2 feet or less. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots veering to the southwest after midnight. Waves 2 feet or less. .THURSDAY...Southwest winds 5 to 10 knots. A chance of showers in the morning...then showers and a chance of thunderstorms in the afternoon. Waves 2 feet or less. .THURSDAY NIGHT...West winds 5 to 10 knots early in the evening becoming light and variable...then becoming north 5 to 10 knots after midnight. Showers likely and a chance of thunderstorms in the evening. Waves 2 feet or less. .FRIDAY...North winds 5 to 10 knots. Waves 2 feet or less. .SATURDAY...Northeast winds 5 to 10 knots early in the morningbecoming light and variable...then becoming northeast 5 to 10 knots . Waves 2 feet or less. .SUNDAY...Light and variable winds becoming east 5 to 10 knots until early evening...then veering to the southeast by midnight. Waves 2 feet or less. $$ LHZ461-081015- MAFOR 0803/ HURON NORTH 14500 11500 11400 11300 11806. Waves 2 feet or less. HURON SOUTH 11300 12400 11500 14400. Waves 2 feet or less. $$ BT 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)  646 FZUS63 KDTX 080212 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 1012 PM EDT Tue Jul 7 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 will wash out across the Appalachia region Wednesday which will veer winds to the south and southwest. A cold front will then push through the Great Lakes Thursday, bringing the likely chance for rain showers and embedded thunderstorms. Lingering shower and storm chances continue Friday across the southern Great Lakes. LCZ460-081015- Lake St Clair- 1012 PM EDT Tue Jul 7 2026 .REST OF TONIGHT...Northeast winds 5 to 10 knots this evening becoming light and variable. Mostly clear. Patchy fog early in the morning. Waves 2 feet or less. .WEDNESDAY...Light and variable winds becoming southeast 5 to 10 knots in the afternoon. Mostly sunny. Patchy fog early in the morning. Waves 2 feet or less. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Mostly clear. Waves 2 feet or less. .THURSDAY...Southwest winds 5 to 10 knots increasing to 10 to 15 knots early in the afternoon. Partly sunny. Light showers likely and a chance of thunderstorms early in the afternoon. Waves 2 feet or less. .THURSDAY NIGHT...West winds 10 to 15 knots diminishing to 5 to 10 knots in the late evening and overnight. Partly cloudy early in the evening becoming mostly cloudy. Light showers likely and a chance of thunderstorms ...then light showers likely after midnight. Waves 2 feet or less. .FRIDAY...North winds 5 to 10 knots becoming northeast 10 to 15 knots in the evening. Mostly cloudy with a chance of showers in the morning...then partly cloudy with a chance of showers and thunderstorms in the afternoon and evening. Waves 2 feet or less. .SATURDAY...East winds 5 to 10 knots. Mostly clear. Waves 2 feet or less. .SUNDAY...Southeast winds 5 to 10 knots. Mostly clear. Waves 2 feet or less. $$ BT Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes  837 FZUS63 KMKX 080216 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Milwaukee/Sullivan WI 916 PM CDT Tue Jul 7 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... High pressure around 30.0 inches over Lake MI and lower MI will shift southeast into the lower Great Lakes and the Ohio Valley for Wednesday. Modest south southwest winds will develop tonight and continue on Wednesday, as weak low pressure around 29.8 inches and an accompanying cold front approaches from the Northern Great Plains. Modest southwest winds Wednesday night will become northwest to north behind the frontal passage Thursday into Friday, with high pressure around 30.0 inches building into the the Upper Great Lakes region. LMZ261-362-364-366-563-565-567-868-080945- 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- 916 PM CDT Tue Jul 7 2026 SHEBOYGAN WI TO PENTWATER MI NORTH... .REST OF TONIGHT...Southwest winds 10 to 15 kt becoming south. Slight chance of showers overnight. Waves 1 to 2 ft. .WEDNESDAY...South winds 10 to 15 kt becoming southwest 10 to 20 kt. Chance of showers and slight chance of thunderstorms. Waves 1 to 2 ft. .WEDNESDAY NIGHT...South winds 10 to 20 kt veering to north 10 to 15 kt. Showers likely with a chance of thunderstorms in the evening, then chance of showers overnight. Waves 1 to 3 ft. .THURSDAY...North winds 10 to 15 kt increasing to 10 to 20 kt. Chance of showers in the morning. Waves 1 to 2 ft. .THURSDAY NIGHT...North winds 10 to 15 kt diminishing to 5 to 10 kt. Waves 1 to 2 ft. .FRIDAY...Northeast winds 10 to 15 kt becoming north 15 to 25 kt in the afternoon. Waves 1 to 2 ft building to 1 to 3 ft. .FRIDAY NIGHT...Northeast winds 10 to 20 kt becoming east 5 to 10 kt. Waves 1 to 3 ft subsiding to 1 to 2 ft. .SATURDAY...Southeast winds 5 to 10 kt veering to west 10 to 20 kt. Waves 1 ft or less. .SUNDAY...Southwest winds 10 to 20 kt. Waves 1 to 3 ft. $$ LMZ080-669-671-673-675-777-779-870-872-874-876-878-080945- Lake Michigan from Michigan City IN to St. Joseph MI 5 NM offshore to Mid Lake- Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore to Mid Lake- Lake Michigan from Port Washington to North Point Light WI 5 NM offshore to Mid Lake- Lake Michigan from North Point Light to Wind Point WI 5 NM offshore to Mid Lake- Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM offshore to Mid Lake- Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM offshore to Mid Lake- Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM offshore to Mid Lake- Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid Lake- Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to Mid Lake- Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid Lake- Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid Lake- Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to Mid Lake- 916 PM CDT Tue Jul 7 2026SHEBOYGAN WI TO PENTWATER MI SOUTH... .REST OF TONIGHT...South winds 5 to 10 kt becoming southwest. Waves 1 ft or less. .WEDNESDAY...Southwest winds 5 to 10 kt becoming south 10 to 20 kt. Waves 1 to 3 ft. .WEDNESDAY NIGHT...South winds 10 to 20 kt becoming southwest. Chance of showers. Waves 1 to 3 ft. .THURSDAY...Southwest winds 10 to 15 kt increasing to 10 to 20 kt. Chance of showers in the morning, then chance of showers and thunderstorms in the afternoon. Waves 1 to 2 ft. .THURSDAY NIGHT...North winds 10 to 15 kt. Chance of showers and thunderstorms in the evening, then chance of showers overnight. Waves 1 to 2 ft. .FRIDAY...Northeast winds 10 to 15 kt becoming north 10 to 20 kt. Waves 2 to 4 ft. .FRIDAY NIGHT...North winds 10 to 20 kt becoming northeast 10 to 15 kt. Waves 2 to 4 ft. .SATURDAY...East winds 5 to 10 kt becoming north 10 to 20 kt. Waves 1 to 2 ft. .SUNDAY...Northeast winds 5 to 10 kt backing to southwest 10 to 20 kt. Waves 1 ft or less. $$ LMZ761-080945- MAFOR 0804/ MICHIGAN NORTH 13410 13510 11516 11316. A chance of thunderstorms Wednesday evening. Waves 2 feet or less. MICHIGAN SOUTH 11410 11510 11500 11510 14410. A chance of showers Wednesday evening. Waves 2 feet or less. $$ DDV Experimental modernized open lake forecast is available online at weather.gov/mkx/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes