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Great Lakes Forecast
Issued by NWS
Issued by NWS
029 FZUS63 KMQT 061334 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 934 AM EDT Sat Jul 6 2024 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 weak high pressure ridge of 29.9 inches will settle over the western Great Lakes today. As the ridge builds to 30.1 inches while shifting to the Lower Great Lakes on Sunday, a 29.9 inch low pressure trough will move east to Minnesota. This trough will dissipate as it moves over Lake Superior on Monday. Then a weak high pressure of 29.9 inches setting up over Lake Superior on Tuesday will build to 30.1 inches on Wednesday. LSZ162-062100- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 934 AM EDT Sat Jul 6 2024 /834 AM CDT Sat Jul 6 2024/ .REST OF TODAY...Southwest winds 5 to 15 knots backing south late. A slight chance of showers and thunderstorms by mid afternoon. Waves calm to 2 feet. .TONIGHT...South winds 5 to 15 knots backing southeast late. A slight chance of showers and thunderstorms. Waves calm to 2 feet. .SUNDAY...East winds 5 to 15 knots backing northeast in the afternoon, then becoming east 10 to 20 knots late. A chance of showers and thunderstorms. Waves calm to 2 feet. .SUNDAY NIGHT...East winds 5 to 15 knots veering west after midnight. A chance of showers and a slight chance of thunderstorms. Waves calm to 2 feet. .MONDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet. .MONDAY NIGHT...West winds 5 to 15 knots veering northwest after midnight. A chance of showers through midnight. Waves calm to 2 feet. .TUESDAY...Southwest winds 5 to 15 knots veering west. Waves calm to 2 feet. .WEDNESDAY...East winds 5 to 15 knots. Waves calm to 2 feet. $$ LSZ263-062100- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 934 AM EDT Sat Jul 6 2024 .REST OF TODAY...Southwest winds 5 to 15 knots. Patchy fog. Waves calm to 2 feet. .TONIGHT...South winds 5 to 15 knots diminishing to less than 10 knots late. Waves calm to 2 feet. .SUNDAY...South winds less than 10 knots becoming northeast 5 to 15 knots in the afternoon, then veering east late. A chance of showers and a slight chance of thunderstorms. Waves calm to 2 feet. .SUNDAY NIGHT...East winds 5 to 15 knots becoming southwest less than 10 knots after midnight. A chance of showers and a slight chance of thunderstorms. Waves calm to 2 feet. .MONDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet. .MONDAY NIGHT...Southwest winds 5 to 15 knots becoming northwest less than 10 knots after midnight. Waves calm to 2 feet. .TUESDAY...Northwest winds 5 to 15 knots backing west. Waves calm to 2 feet. .WEDNESDAY...West winds 5 to 15 knots backing southwest. Waves calm to 2 feet. $$ LSZ264-062100- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 934 AM EDT Sat Jul 6 2024 .REST OF TODAY...Southwest winds 5 to 15 knots. Patchy fog. Waves calm to 2 feet. .TONIGHT...South winds 5 to 15 knots diminishing to less than 10 knots late. Waves calm to 2 feet. .SUNDAY...Southeast winds less than 10 knots becoming east 5 to 15 knots in the afternoon, then veering southeast late. A slight chance of showers. A slight chance of thunderstorms by mid afternoon. Waves calm to 2 feet. .SUNDAY NIGHT...Southeast winds 5 to 15 knots becoming southwest less than 10 knots after midnight. A chance of showers and a slight chance of thunderstorms. Waves calm to 2 feet. .MONDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet. .MONDAY NIGHT...Southwest winds less than 10 knots veering northwest after midnight. A chance of showers through midnight. Waves calm to 2 feet. .TUESDAY...Northwest winds 5 to 15 knots becoming west less than 10 knots. Waves calm to 2 feet. .WEDNESDAY...West winds 5 to 15 knots backing southwest. Waves calm to 2 feet. $$ LSZ265-062100- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 934 AM EDT Sat Jul 6 2024 .REST OF TODAY...West winds 5 to 15 knots backing east in the afternoon, then veering southeast late. Patchy fog. Waves calm to 2 feet. .TONIGHT...Southeast winds 5 to 15 knots. Waves calm to 2 feet. .SUNDAY...Southeast winds 5 to 15 knots backing east in the afternoon, then increasing to 10 to 20 knots late. A chance of showers. A slight chance of thunderstorms by mid afternoon. Waves calm to 2 feet. .SUNDAY NIGHT...South winds 5 to 15 knots veering southwest after midnight. A chance of showers and a slight chance of thunderstorms. Waves calm to 2 feet. .MONDAY...Southwest winds 5 to 15 knots backing east by mid afternoon. Waves calm to 2 feet. .MONDAY NIGHT...Southeast winds 5 to 15 knots veering northwest after midnight. Waves calm to 2 feet. .TUESDAY...North winds 5 to 15 knots backing west. Waves calm to 2 feet. .WEDNESDAY...Northeast winds 5 to 15 knots veering southwest. Waves calm to 2 feet. $$ LSZ266-062100- 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- 934 AM EDT Sat Jul 6 2024 .REST OF TODAY...Northwest winds 5 to 15 knots backing west in the afternoon. Patchy fog. Waves calm to 2 feet. .TONIGHT...Southeast winds 5 to 15 knots. Waves calm to 2 feet. .SUNDAY...Southeast winds 5 to 15 knots increasing to 10 to 20 knots late. A slight chance of showers. A slight chance of thunderstorms by mid afternoon. Waves calm to 2 feet. .SUNDAY NIGHT...South winds 10 to 20 knots diminishing to 5 to 15 knots after midnight. A chance of showers and thunderstorms. Waves calm to 2 feet. .MONDAY...Southwest winds 5 to 15 knots backing east by mid afternoon. Waves calm to 2 feet. .MONDAY NIGHT...Southeast winds 5 to 15 knots backing north after midnight. A chance of showers through midnight. Waves calm to 2 feet. .TUESDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet. .WEDNESDAY...Northwest winds 5 to 15 knots backing west. Waves calm to 2 feet. $$ LSZ267-062100- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 934 AM EDT Sat Jul 6 2024 .REST OF TODAY...Northwest winds 10 to 20 knots backing west in the afternoon, then diminishing to 5 to 15 knots late. Patchy fog. Waves calm to 2 feet. .TONIGHT...West winds 5 to 15 knots backing south after midnight, then backing southeast late. Waves calm to 2 feet. .SUNDAY...Southeast winds 5 to 15 knots increasing to 10 to 20 knots late. Waves calm to 2 feet. .SUNDAY NIGHT...South winds 10 to 20 knots. A chance of showers and a slight chance of thunderstorms. Waves calm to 2 feet. .MONDAY...South winds 5 to 15 knots backing southeast by mid afternoon. Waves calm to 2 feet. .MONDAY NIGHT...Southeast winds 5 to 15 knots backing north after midnight. A chance of showers. Waves calm to 2 feet. .TUESDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet. .WEDNESDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet. $$ LSZ261-062100- MAFOR 0615/ Superior West 12500 14400 12300. Waves 1 foot or less. Superior North Central 11610 11510 12500 13400 11300. Patchy fog today. Waves 2 feet or less. Superior South Central 11700 11200 15300. Patchy fog today. Waves 1 foot or less. Superior East 11700 13600 11400 13300. Patchy fog today. Waves 1 foot or less. $$ MZ Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes