Great Lakes Forecast
Issued by NWS
Issued by NWS
233 FZUS63 KMQT 100733 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 333 AM EDT Mon Jun 10 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...Ridging builds to 30.1 inches this morning as the high moves overhead and gradually weakens to 30.0 inches Tuesday afternoon. A 29.4 inch low pressure system over western Ontario Tuesday evening moves to near James Bay by Wednesday evening, dragging a 29.6 inch trough over Lake Superior Thursday. 30.0 inch ridging moves into Lake Superior on Friday. LSZ162-101545- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 333 AM EDT Mon Jun 10 2024 /233 AM CDT Mon Jun 10 2024/ .EARLY THIS MORNING...North winds 5 to 15 knots. Waves calm to 2 feet. .TODAY...North winds 5 to 15 knots veering south in the afternoon, then veering southwest late. Waves calm to 2 feet. .TONIGHT...South winds 5 to 15 knots backing southeast after midnight. Waves calm to 2 feet. .TUESDAY...Southeast winds 5 to 15 knots increasing to 10 to 20 knots in the afternoon. A chance of rain showers through early afternoon, then rain showers likely and a slight chance of thunderstorms by mid afternoon. Waves calm to 2 feet. .TUESDAY NIGHT...Southwest winds 10 to 20 knots. A slight chance of showers through midnight. Waves calm to 2 feet. .WEDNESDAY...Southwest winds 10 to 20 knots increasing to 15 to 25 knots by mid afternoon. Waves building to 1 to 3 feet. .WEDNESDAY NIGHT...Southwest winds 10 to 20 knots. A chance of showers and thunderstorms. Waves subsiding to calm to 2 feet. .THURSDAY...West winds 10 to 20 knots veering northwest. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. .FRIDAY...Southwest winds 10 to 20 knots becoming north 5 to 15 knots. Waves calm to 2 feet. $$ LSZ263-101545- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 333 AM EDT Mon Jun 10 2024 .EARLY THIS MORNING...North winds 5 to 15 knots. Waves calm to 2 feet. .TODAY...North winds 5 to 15 knots backing southwest in the afternoon. Waves calm to 2 feet. .TONIGHT...West winds 5 to 15 knots backing south late. Waves calm to 2 feet. .TUESDAY...South winds 5 to 15 knots increasing to 10 to 20 knots late. A chance of rain showers. Waves calm to 2 feet. .TUESDAY NIGHT...South winds 5 to 15 knots veering southwest after midnight. A slight chance of showers and thunderstorms through midnight. Waves calm to 2 feet. .WEDNESDAY...Southwest winds 10 to 20 knots. Waves building to 1 to 3 feet. .WEDNESDAY NIGHT...Southwest winds 5 to 15 knots. A chance of showers and thunderstorms. Waves subsiding to calm to 2 feet. .THURSDAY...West winds 10 to 20 knots diminishing to 5 to 15 knots. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. .FRIDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet. $$ LSZ264-101545- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 333 AM EDT Mon Jun 10 2024 .EARLY THIS MORNING...North winds 5 to 15 knots. Waves calm to 2 feet. .TODAY...North winds 5 to 15 knots backing west in the afternoon. Waves calm to 2 feet. .TONIGHT...West winds 5 to 15 knots backing southwest late. Waves calm to 2 feet. .TUESDAY...South winds 5 to 15 knots backing southeast in the afternoon. A slight chance of rain showers by mid afternoon. Waves calm to 2 feet. .TUESDAY NIGHT...South winds 5 to 15 knots veering southwest after midnight. A slight chance of showers through midnight. Waves building to 1 to 3 feet. .WEDNESDAY...Southwest winds 10 to 20 knots. Waves 1 to 3 feet. .WEDNESDAY NIGHT...South winds 5 to 15 knots veering southwest after midnight. A chance of showers and thunderstorms. Waves subsiding to calm to 2 feet. .THURSDAY...West winds 10 to 20 knots becoming northwest 5 to 15 knots. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. .FRIDAY...West winds 5 to 15 knots backing southwest. Waves calm to 2 feet. $$ LSZ265-101545- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 333 AM EDT Mon Jun 10 2024 .EARLY THIS MORNING...North winds 10 to 20 knots. Waves calm to 2 feet building to 1 to 3 feet. .TODAY...North winds 10 to 20 knots backing west late. Waves subsiding to calm to 2 feet. .TONIGHT...West winds 5 to 15 knots backing south late. Waves calm to 2 feet. .TUESDAY...Southeast winds 5 to 15 knots increasing to 10 to 20 knots in the afternoon. A slight chance of showers by mid afternoon. Waves building to 1 to 3 feet. .TUESDAY NIGHT...South winds 10 to 20 knots veering southwest after midnight. A chance of showers and a slight chance of thunderstorms through midnight. Waves subsiding to calm to 2 feet. .WEDNESDAY...Southwest winds 10 to 20 knots backing south by mid afternoon. Waves calm to 2 feet. .WEDNESDAY NIGHT...South winds 10 to 20 knots veering southwest after midnight. A chance of showers and thunderstorms. Waves calm to 2 feet. .THURSDAY...West winds 10 to 20 knots. Waves calm to 2 feet. .FRIDAY...Northwest winds 10 to 20 knots becoming west 5 to 15 knots. Waves calm to 2 feet. $$ LSZ266-101545- 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- 333 AM EDT Mon Jun 10 2024 .EARLY THIS MORNING...North winds 10 to 20 knots. Waves 1 to 3 feet. .TODAY...North winds 10 to 20 knots backing northwest in the afternoon. Waves 1 to 3 feet. .TONIGHT...Northwest winds 5 to 15 knots backing south late. Waves subsiding to calm to 2 feet. .TUESDAY...South winds 5 to 15 knots backing southeast in the afternoon, then increasing to 10 to 20 knots late. A slight chance of rain showers by mid afternoon. Waves building to 1 to 3 feet. .TUESDAY NIGHT...South winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. A chance of showers. Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. .WEDNESDAY...Southwest winds 10 to 20 knots backing south by mid afternoon. Waves subsiding to calm to 2 feet. .WEDNESDAY NIGHT...South winds 10 to 20 knots veering southwest after midnight. A chance of showers. Waves calm to 2 feet. .THURSDAY...West winds 10 to 20 knots veering northwest. A chance of showers. Waves calm to 2 feet. .FRIDAY...Northwest winds 10 to 20 knots diminishing to 5 to 15 knots. Waves calm to 2 feet. $$ LSZ267-101545- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 333 AM EDT Mon Jun 10 2024 .EARLY THIS MORNING...North winds 10 to 20 knots. Waves 1 to 3 feet. .TODAY...North winds 10 to 20 knots backing northwest in the afternoon. Waves building to 2 to 4 feet. .TONIGHT...Northwest winds 10 to 20 knots diminishing to 5 to 15 knots after midnight, then backing west late. Waves subsiding to calm to 2 feet. .TUESDAY...Southeast winds 5 to 15 knots increasing to 10 to 20 knots late. Waves calm to 2 feet. .TUESDAY NIGHT...South winds 10 to 20 knots. A chance of showers. Waves building to 1 to 3 feet. .WEDNESDAY...Southwest winds 10 to 20 knots backing south by mid afternoon. Waves subsiding to calm to 2 feet. .WEDNESDAY NIGHT...South winds 10 to 20 knots. A chance of showers and thunderstorms. Waves calm to 2 feet. .THURSDAY...West winds 10 to 20 knots. A chance of showers. Waves calm to 2 feet. .FRIDAY...Northwest winds 10 to 20 knots diminishing to 5 to 15 knots. Waves calm to 2 feet. $$ LSZ261-101545- MAFOR 1009/ Superior West 12810 11200 12500 12400 11300. Waves 1 foot or less. Superior North Central 12810 11710 13610 12600. Waves 1 to 2 feet. Superior South Central 12810 13710 12700 11600. Waves 1 to 3 feet today. Waves 2 feet or less tonight. Superior East 11820 11810 13720 12710 11700. Waves 2 to 3 feet. $$ 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