Great Lakes Forecast
Issued by NWS
Issued by NWS
329 FZUS63 KMQT 081346 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 946 AM EDT Sat Jun 8 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...Weak troughing at 29.7 inches remains in place over Lake Superior before ridging near 30.0 inches shifts over Lake Superior late Sunday as high pressure moves into the Canadian Prairies. The ridge builds to 30.1 inches over Lake Superior Monday morning as the high moves overhead and gradually weakens to 30.0 inches Tuesday afternoon. A 29.6 inch low pressure system north of International Falls Minnesota Tuesday evening moves to near James Bay by Wednesday evening. LSZ162-082200- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 946 AM EDT Sat Jun 8 2024 /846 AM CDT Sat Jun 8 2024/ .REST OF TODAY...West winds 10 to 20 knots backing southwest in the afternoon, then veering west late. A slight chance of showers. A slight chance of thunderstorms by mid afternoon. Waves calm to 2 feet building to 1 to 3 feet, then subsiding to calm to 2 feet. .TONIGHT...West winds 10 to 20 knots. A slight chance of showers and thunderstorms through midnight. Waves building to 1 to 3 feet. .SUNDAY...West winds 10 to 20 knots veering northwest in the afternoon. Waves subsiding to calm to 2 feet. .SUNDAY NIGHT...West winds 5 to 15 knots veering north after midnight. Waves calm to 2 feet. .MONDAY...North winds 5 to 15 knots veering south by mid afternoon. Waves calm to 2 feet. .MONDAY NIGHT...East winds 5 to 15 knots. Waves calm to 2 feet. .TUESDAY...South winds 5 to 15 knots becoming west 10 to 20 knots. A chance of showers. Waves calm to 2 feet. .WEDNESDAY...Southwest winds 10 to 20 knots. A chance of showers. Waves calm to 2 feet. $$ LSZ263-082200- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 946 AM EDT Sat Jun 8 2024 .REST OF TODAY...West winds 5 to 15 knots becoming southwest 10 to 20 knots in the afternoon, then veering west late. A chance of showers. A slight chance of thunderstorms by mid afternoon. Waves 1 to 3 feet. .TONIGHT...West winds 5 to 15 knots. A slight chance of thunderstorms through midnight. A slight chance of showers. Waves building to 2 to 4 feet. .SUNDAY...Northwest winds 5 to 15 knots increasing to 10 to 20 knots in the afternoon, then diminishing to 5 to 15 knots late. A slight chance of showers through early afternoon. Waves subsiding to calm to 2 feet. .SUNDAY NIGHT...West winds 5 to 15 knots veering north after midnight. Waves calm to 2 feet. .MONDAY...North winds 5 to 15 knots backing southwest by mid afternoon. Waves calm to 2 feet. .MONDAY NIGHT...Southwest winds 5 to 15 knots backing south after midnight. Waves calm to 2 feet. .TUESDAY...South winds 5 to 15 knots veering southwest. A chance of showers. Waves calm to 2 feet. .WEDNESDAY...Southwest winds 10 to 20 knots diminishing to 5 to 15 knots. A chance of showers. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. $$ LSZ264-082200- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 946 AM EDT Sat Jun 8 2024 .REST OF TODAY...West winds 5 to 15 knots becoming southwest 10 to 20 knots in the afternoon, then veering west late. A slight chance of showers and thunderstorms by mid afternoon. Waves calm to 2 feet building to 1 to 3 feet. .TONIGHT...West winds 5 to 15 knots becoming northwest 10 to 20 knots late. A slight chance of thunderstorms through midnight. A chance of showers. Waves building to 2 to 4 feet. .SUNDAY...Northwest winds 10 to 20 knots veering north in the afternoon. Waves 2 to 4 feet. .SUNDAY NIGHT...Northwest winds 5 to 15 knots veering north after midnight. Waves subsiding to 1 to 3 feet. .MONDAY...North winds 5 to 15 knots backing west by mid afternoon. Waves subsiding to calm to 2 feet. .MONDAY NIGHT...West winds 5 to 15 knots backing south after midnight. Waves calm to 2 feet. .TUESDAY...South winds 5 to 15 knots veering southwest. A chance of showers. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. .WEDNESDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet. $$ LSZ265-082200- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 946 AM EDT Sat Jun 8 2024 .REST OF TODAY...West winds 10 to 20 knots. A slight chance of showers by late morning. Waves calm to 2 feet. .TONIGHT...West winds 10 to 20 knots. A slight chance of thunderstorms through midnight. A slight chance of showers. Waves building to 1 to 3 feet. .SUNDAY...Northwest winds 15 to 25 knots. A slight chance of showers. Waves building to 2 to 4 feet. .SUNDAY NIGHT...Northwest winds 10 to 20 knots. Waves subsiding to 1 to 3 feet. .MONDAY...North winds 10 to 20 knots backing northwest by mid afternoon. Waves subsiding to calm to 2 feet. .MONDAY NIGHT...West winds 5 to 15 knots backing south after midnight. Waves calm to 2 feet. .TUESDAY...South winds 5 to 15 knots becoming southwest 10 to 20 knots. A chance of showers. Waves calm to 2 feet. .WEDNESDAY...West winds 10 to 20 knots backing southwest. Waves calm to 2 feet. $$ LSZ266-082200- 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- 946 AM EDT Sat Jun 8 2024 .REST OF TODAY...West winds 10 to 20 knots. A slight chance of showers. Waves calm to 2 feet building to 1 to 3 feet. .TONIGHT...West winds 10 to 20 knots. A chance of showers. Waves subsiding to calm to 2 feet, then building to 2 to 4 feet. .SUNDAY...Northwest winds 15 to 25 knots increasing to 20 to 30 knots in the afternoon, then diminishing to 15 to 25 knots late. A slight chance of showers. Waves building to 3 to 6 feet occasionally to 8 feet. .SUNDAY NIGHT...Northwest winds 15 to 25 knots becoming north 10 to 20 knots after midnight. Waves subsiding to 2 to 4 feet. .MONDAY...North winds 10 to 20 knots backing northwest by mid afternoon. Waves subsiding to 1 to 3 feet. .MONDAY NIGHT...West winds 5 to 15 knots backing south after midnight. Waves subsiding to calm to 2 feet. .TUESDAY...South winds 5 to 15 knots increasing to 10 to 20 knots. A chance of showers. Waves calm to 2 feet. .WEDNESDAY...West winds 10 to 20 knots backing south. Waves calm to 2 feet. $$ LSZ267-082200- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 946 AM EDT Sat Jun 8 2024 .REST OF TODAY...Southwest winds 10 to 20 knots veering west in the afternoon. A slight chance of showers. Waves calm to 2 feet. .TONIGHT...West winds 5 to 15 knots increasing to 10 to 20 knots after midnight. A chance of showers. Waves building to 1 to 3 feet. .SUNDAY...Northwest winds 15 to 25 knots. A slight chance of showers. Waves building to 3 to 6 feet occasionally to 8 feet. .SUNDAY NIGHT...Northwest winds 15 to 25 knots becoming north 10 to 20 knots after midnight. Waves subsiding to 2 to 4 feet. .MONDAY...Northwest winds 10 to 20 knots. Waves subsiding to 1 to 3 feet. .MONDAY NIGHT...Northwest winds 5 to 15 knots backing southwest after midnight. Waves subsiding to calm to 2 feet. .TUESDAY...Southeast winds 5 to 15 knots becoming south 10 to 20 knots. A chance of showers. Waves calm to 2 feet. .WEDNESDAY...West winds 10 to 20 knots backing south. Waves calm to 2 feet. $$ LSZ261-082200- MAFOR 0815/ Superior West 12520 11620 12610 12620 11610. Waves 1 to 3 feet this afternoon and tonight. Waves 2 to 4 feet Sunday morning. Superior North Central 11620 11520 11620 13610 12720. A chance of showers this evening. Waves 1 to 3 feet this afternoon and tonight. Waves 2 to 4 feet Sunday morning. Superior South Central 15610 11620 11720. A chance of showers late this morning. Waves 1 to 3 feet this afternoon and tonight. Waves 2 to 4 feet Sunday morning. Superior East 15610 11620 11720. A chance of showers tonight and Sunday morning. Waves 1 to 3 feet this afternoon and tonight. Waves 2 to 4 feet building to 3 to 5 feet Sunday morning. $$ 07 Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes