####018009702#### FZUS63 KMQT 051407 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 1007 AM EDT Sun May 5 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 at 30.1 inches returns across the lake today then shifts east as a broad 29.2 inch low pressure develops on the Northern Plains on Monday. A strong pressure gradient over western Lake Superior begins to set up Tuesday morning as a deepening 29.0 inch low pushes eastward against 30.0 inch ridging over far northern Ontario. This gradient loosens into Wednesday as the Northern Plains low weakens and a 29.5 and a 29.4 inch low ejecting out of the Plains move south of Lake Superior. After a brief window of height rises late in the day Wednesday, another 29.4 inch low moves from the Central Plains into the Lower Great Lakes early Thursday. LSZ162-052215- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 1007 AM EDT Sun May 5 2024 /907 AM CDT Sun May 5 2024/ .REST OF TODAY...West winds 5 to 15 knots backing southwest in the afternoon, then becoming south 10 to 20 knots late. Waves calm to 2 feet. .TONIGHT...South winds 5 to 15 knots. Waves calm to 2 feet. .MONDAY...East winds 5 to 15 knots increasing to 15 to 25 knots. Waves building to 3 to 6 feet occasionally to 8 feet. .MONDAY NIGHT...East winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. A slight chance of rain showers after midnight. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .TUESDAY...East winds 15 to 25 knots backing northeast by mid afternoon. Rain showers likely. Waves building to 4 to 8 feet occasionally to 10 feet. .TUESDAY NIGHT...Northeast winds 10 to 20 knots. Rain showers likely through midnight. A chance of rain showers after midnight. Waves subsiding to 1 to 3 feet. .WEDNESDAY...Northeast winds 10 to 20 knots increasing to 20 to 30 knots. A chance of rain showers. Waves building to 3 to 5 feet occasionally to 7 feet. .THURSDAY...Northeast winds 15 to 25 knots becoming north 10 to 20 knots. A chance of rain showers. Waves subsiding to 1 to 3 feet. $$ LSZ263-052215- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 1007 AM EDT Sun May 5 2024 .REST OF TODAY...West winds 5 to 15 knots backing southwest in the afternoon, then increasing to 10 to 20 knots late. Waves calm to 2 feet building to 2 to 4 feet. .TONIGHT...Southwest winds 5 to 15 knots diminishing to less than 10 knots late. Waves subsiding to calm to 2 feet. .MONDAY...South winds less than 10 knots becoming east 5 to 15 knots in the afternoon, then increasing to 10 to 20 knots late. Waves building to 1 to 3 feet. .MONDAY NIGHT...East winds 10 to 20 knots diminishing to 5 to 15 knots after midnight. A slight chance of rain showers after midnight. Waves 1 to 3 feet. .TUESDAY...East winds 15 to 25 knots. A chance of rain showers through early afternoon, then rain showers likely by mid afternoon. Waves building to 3 to 5 feet occasionally to 7 feet. .TUESDAY NIGHT...East winds 10 to 20 knots backing northeast after midnight. Rain showers likely through midnight, then a chance of rain showers after midnight. Waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. .WEDNESDAY...Northeast winds 10 to 20 knots increasing to 15 to 25 knots. A chance of rain showers. Waves building to 3 to 5 feet occasionally to 7 feet. .THURSDAY...Northeast winds 15 to 25 knots becoming north 10 to 20 knots. Waves subsiding to 2 to 4 feet. $$ LSZ264-052215- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 1007 AM EDT Sun May 5 2024 .REST OF TODAY...West winds 5 to 15 knots backing southwest late. Waves calm to 2 feet building to 1 to 3 feet. .TONIGHT...Southwest winds 5 to 15 knots. Waves subsiding to calm to 2 feet. .MONDAY...Southwest winds 5 to 15 knots backing southeast in the afternoon. Waves calm to 2 feet. .MONDAY NIGHT...East winds 10 to 20 knots becoming southeast 5 to 15 knots after midnight. Waves building to 1 to 3 feet. .TUESDAY...East winds 15 to 25 knots. A chance of rain showers. Waves building to 3 to 5 feet occasionally to 7 feet. .TUESDAY NIGHT...East winds 10 to 20 knots becoming northeast 15 to 25 knots after midnight. Rain showers likely through midnight, then a chance of rain showers after midnight. Waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. .WEDNESDAY...Northeast winds 15 to 25 knots. A chance of rain showers. Waves subsiding to 1 to 3 feet, then building to 3 to 5 feet occasionally to 7 feet. .THURSDAY...Northeast winds 15 to 25 knots becoming north 10 to 20 knots. Waves subsiding to 2 to 4 feet. $$ LSZ265-052215- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 1007 AM EDT Sun May 5 2024 .REST OF TODAY...West winds 10 to 20 knots diminishing to 5 to 15 knots in the afternoon. Waves calm to 2 feet. .TONIGHT...Southwest winds 5 to 15 knots backing south after midnight, then veering southwest late. Waves calm to 2 feet. .MONDAY...Southwest winds 5 to 15 knots backing east in the afternoon, then increasing to 10 to 20 knots late. Waves calm to 2 feet. .MONDAY NIGHT...Southeast winds 10 to 20 knots. Waves calm to 2 feet. .TUESDAY...East winds 10 to 20 knots increasing to 15 to 25 knots by mid afternoon. A chance of showers through early afternoon, then showers likely by mid afternoon. Waves building to 2 to 4 feet. .TUESDAY NIGHT...East winds 10 to 20 knots backing northeast after midnight. Rain showers likely through midnight, then a chance of rain showers after midnight. Waves subsiding to calm to 2 feet. .WEDNESDAY...North winds 10 to 20 knots becoming northeast 15 to 25 knots. A chance of rain showers. Waves building to 2 to 4 feet. .THURSDAY...North winds 20 to 30 knots diminishing to 15 to 25 knots. A chance of rain showers. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. $$ LSZ266-052215- 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- 1007 AM EDT Sun May 5 2024 .REST OF TODAY...West winds 10 to 20 knots diminishing to 5 to 15 knots in the afternoon. Waves 1 to 3 feet subsiding to calm to 2 feet. .TONIGHT...Southwest winds 5 to 15 knots. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. .MONDAY...South winds 5 to 15 knots backing east late. Waves calm to 2 feet. .MONDAY NIGHT...East winds 10 to 20 knots becoming southeast 5 to 15 knots after midnight. Waves calm to 2 feet. .TUESDAY...East winds 10 to 20 knots. A chance of rain showers. Waves building to 2 to 4 feet. .TUESDAY NIGHT...East winds 10 to 20 knots backing northeast after midnight. Rain showers likely through midnight, then a chance of rain showers after midnight. Waves subsiding to 1 to 3 feet. .WEDNESDAY...Northeast winds 10 to 20 knots increasing to 15 to 25 knots. A chance of rain showers. Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. .THURSDAY...North winds 20 to 30 knots diminishing to 15 to 25 knots. A chance of rain showers. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. $$ LSZ267-052215- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 1007 AM EDT Sun May 5 2024 .REST OF TODAY...West winds 10 to 20 knots diminishing to 5 to 15 knots late. Waves 2 to 4 feet subsiding to calm to 2 feet. .TONIGHT...West winds 5 to 15 knots backing south late. Waves calm to 2 feet. .MONDAY...South winds 5 to 15 knots backing east in the afternoon. Waves calm to 2 feet. .MONDAY NIGHT...East winds 5 to 15 knots becoming southeast 10 to 20 knots after midnight. Waves calm to 2 feet. .TUESDAY...East winds 10 to 20 knots. A chance of rain showers by mid afternoon. Waves building to 1 to 3 feet. .TUESDAY NIGHT...Southeast winds 10 to 20 knots backing east after midnight. Rain showers likely. Waves 1 to 3 feet. .WEDNESDAY...Northeast winds 15 to 25 knots. A chance of rain showers. Waves subsiding to calm to 2 feet, then building to 2 to 4 feet. .THURSDAY...North winds 20 to 30 knots diminishing to 15 to 25 knots. A chance of rain showers. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. $$ LSZ261-052215- MAFOR 0515/ Superior West 12510 11410 11400 12500 11400 11300. Waves 2 feet or less. Superior North Central 11610 11510 12520 12510 12500. Waves 1 to 3 feet this afternoon and tonight. Waves 2 feet or less Monday morning. Superior South Central 11610 12600 12400 12500 11400. Waves 2 feet or less. Superior East 12610 11600 13500 12400. Waves 2 to 4 feet this afternoon. Waves 1 to 2 feet tonight and Monday morning. $$ Voss Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes