Great Lakes Forecast
Issued by NWS
Issued by NWS
416 FZUS63 KMQT 241353 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 953 AM EDT Tue Sep 24 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...Today, a 29.8 inch low pressure will track northeast to lower Michigan while a weakening 29.8 inch trough lifts from northern Minnesota into Ontario. 30.0 inch high pressure builds over the Lower MS Valley Wednesday, building to 30.1 inches Thursday. High pressure continues over the Great Lakes at 30.0 inches Friday into Saturday despite the remnants of a 29.7 inch tropical system over the Southeast and a 29.6 inch low over Hudson Bay. LSZ162-242200- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 953 AM EDT Tue Sep 24 2024 /853 AM CDT Tue Sep 24 2024/ .REST OF TODAY...South winds 5 to 15 knots backing east in the afternoon. Waves calm to 2 feet. .TONIGHT...East winds 5 to 15 knots backing northwest after midnight, then backing west late. Waves calm to 2 feet. .WEDNESDAY...West winds 5 to 15 knots becoming southwest 10 to 20 knots in the afternoon, then diminishing to 5 to 15 knots late. Waves calm to 2 feet. .WEDNESDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet. .THURSDAY...Southwest winds 5 to 15 knots backing east by mid afternoon. Waves calm to 2 feet. .THURSDAY NIGHT...East winds 5 to 15 knots veering southwest after midnight. Waves calm to 2 feet. .FRIDAY...Southwest winds 5 to 15 knots backing northeast. Waves calm to 2 feet. .SATURDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet. $$ LSZ263-242200- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 953 AM EDT Tue Sep 24 2024 .REST OF TODAY...South winds 5 to 15 knots backing southeast in the afternoon, then backing northeast late. Waves calm to 2 feet. .TONIGHT...East winds 5 to 15 knots becoming west less than 10 knots after midnight. Waves calm to 2 feet. .WEDNESDAY...West winds 5 to 15 knots becoming southwest 10 to 20 knots late. Waves calm to 2 feet. .WEDNESDAY NIGHT...Southwest winds 5 to 15 knots diminishing to less than 10 knots after midnight. Waves calm to 2 feet. .THURSDAY...Southwest winds 5 to 15 knots backing south by mid afternoon. Waves calm to 2 feet. .THURSDAY NIGHT...Southeast winds 5 to 15 knots veering south after midnight. Waves calm to 2 feet. .FRIDAY...Southwest winds 5 to 15 knots backing southeast. Waves calm to 2 feet. .SATURDAY...Northeast winds 5 to 15 knots veering east. Waves calm to 2 feet. $$ LSZ264-242200- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 953 AM EDT Tue Sep 24 2024 .REST OF TODAY...Southeast winds 5 to 15 knots. Waves calm to 2 feet. .TONIGHT...Southeast winds 5 to 15 knots becoming south less than 10 knots after midnight, then veering west late. Waves calm to 2 feet. .WEDNESDAY...West winds 5 to 15 knots. Waves calm to 2 feet. .WEDNESDAY NIGHT...West winds 5 to 15 knots diminishing to less than 10 knots after midnight. Waves calm to 2 feet. .THURSDAY...South winds 5 to 15 knots. Waves calm to 2 feet. .THURSDAY NIGHT...Southeast winds 5 to 15 knots veering south after midnight. Waves calm to 2 feet. .FRIDAY...Southwest winds 5 to 15 knots backing southeast. Waves calm to 2 feet. .SATURDAY...South winds 5 to 15 knots backing east. Waves calm to 2 feet. $$ LSZ265-242200- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 953 AM EDT Tue Sep 24 2024 .REST OF TODAY...Southeast winds 5 to 15 knots increasing to 10 to 20 knots in the afternoon, then backing east late. Waves calm to 2 feet. .TONIGHT...East winds 5 to 15 knots veering southwest after midnight, then veering west late. Waves calm to 2 feet. .WEDNESDAY...West winds 10 to 20 knots diminishing to 5 to 15 knots late. Waves calm to 2 feet. .WEDNESDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet. .THURSDAY...West winds 5 to 15 knots backing southeast by mid afternoon. Waves calm to 2 feet. .THURSDAY NIGHT...Southeast winds 5 to 15 knots veering south after midnight. Waves calm to 2 feet. .FRIDAY...East winds 5 to 15 knots veering southeast. Waves calm to 2 feet. .SATURDAY...East winds 5 to 15 knots. Waves calm to 2 feet. $$ LSZ266-242200- 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- 953 AM EDT Tue Sep 24 2024 .REST OF TODAY...Southeast winds 5 to 15 knots becoming east 10 to 20 knots late. Waves calm to 2 feet. .TONIGHT...East winds 5 to 15 knots backing northwest late. Waves calm to 2 feet. .WEDNESDAY...Northwest winds 10 to 20 knots becoming west 5 to 15 knots late. Waves calm to 2 feet. .WEDNESDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet. .THURSDAY...West winds 5 to 15 knots backing southeast by mid afternoon. Waves calm to 2 feet. .THURSDAY NIGHT...Southeast winds 5 to 15 knots veering south after midnight. Waves calm to 2 feet. .FRIDAY...South winds 5 to 15 knots backing southeast. Waves calm to 2 feet. .SATURDAY...Southeast winds 5 to 15 knots backing east. Waves calm to 2 feet. $$ LSZ267-242200- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 953 AM EDT Tue Sep 24 2024 .REST OF TODAY...Southeast winds 10 to 20 knots becoming east 5 to 15 knots in the afternoon, then increasing to 10 to 20 knots late. A slight chance of showers by mid afternoon. Waves calm to 2 feet. .TONIGHT...East winds 5 to 15 knots backing northeast after midnight, then backing northwest late. A slight chance of showers. Waves calm to 2 feet. .WEDNESDAY...Northwest winds 10 to 20 knots backing west late. Waves calm to 2 feet. .WEDNESDAY NIGHT...West winds 10 to 20 knots diminishing to 5 to 15 knots after midnight. Waves calm to 2 feet. .THURSDAY...West winds 5 to 15 knots veering north by mid afternoon. Waves calm to 2 feet. .THURSDAY NIGHT...Southeast winds 5 to 15 knots veering south after midnight. Waves calm to 2 feet. .FRIDAY...Southeast winds 5 to 15 knots increasing to 10 to 20 knots. Waves calm to 2 feet. .SATURDAY...East winds 10 to 20 knots. Waves calm to 2 feet. $$ LSZ261-242200- MAFOR 2415/ Superior West 11400 13200 11100 11700 11600 11610. Waves 2 feet or less. Superior North Central 13310 11300 11400 12600 11610. Waves 1 to 2 feet. Superior South Central 11310 12210 11200 11300 11600 12700. Waves around 1 foot. Superior East 11310 11200 11210 12200 11800 12700. Waves 2 feet or less. $$ GS Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes