####018010667#### FZUS63 KMQT 071346 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 946 AM EDT Tue May 7 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 29.1 inch low rotates over the Northern Plains today, extending 29.6 inch troughing over Lake Superior. This sets up a strong pressure gradient over western Lake Superior this morning as the 29.1 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 inch low ejecting out of the Plains moves east along the southern end of the Great Lakes Basin. After a brief window of height rises late in the day Wednesday, another 29.5 inch low moves from the Central Plains to the Ohio River Valley early Thursday. Weak 30.0 inch ridging briefly builds in Thursday night through early Friday before another 29.7 inch low pressure trough drops through later in the day. This will be followed by weak height rises Saturday as a weak ridge briefly builds to 29.8 inches. LSZ162-072200- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 946 AM EDT Tue May 7 2024 /846 AM CDT Tue May 7 2024/ .REST OF TODAY...East winds 15 to 25 knots increasing to 20 to 30 knots in the afternoon, then becoming northeast 15 to 25 knots late. A chance of rain showers by late morning, then rain showers likely by mid afternoon. Waves 4 to 8 feet occasionally to 10 feet, then subsiding to 4 to 7 feet occasionally to 9 feet. .TONIGHT...Northeast winds 10 to 20 knots. A chance of rain showers. Waves subsiding to 2 to 4 feet. .WEDNESDAY...Northeast winds 10 to 20 knots becoming east 15 to 25 knots in the afternoon, then diminishing to 10 to 20 knots late. Patchy fog through early afternoon. A chance of rain showers. Waves building to 4 to 7 feet occasionally to 9 feet. .WEDNESDAY NIGHT...Northeast winds 15 to 25 knots. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .THURSDAY...Northeast winds 15 to 25 knots. Waves subsiding to 2 to 4 feet. .THURSDAY NIGHT...Northwest winds 5 to 15 knots becoming west 10 to 20 knots after midnight. Waves subsiding to calm to 2 feet. .FRIDAY...Southwest winds 10 to 20 knots veering northwest. A chance of rain showers. Waves calm to 2 feet. .SATURDAY...West winds 10 to 20 knots. Waves calm to 2 feet. $$ LSZ263-072200- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 946 AM EDT Tue May 7 2024 .REST OF TODAY...East winds 10 to 20 knots increasing to 15 to 25 knots in the afternoon. A chance of rain showers. Waves 3 to 6 feet occasionally to 8 feet, then subsiding to 3 to 5 feet occasionally to 7 feet. .TONIGHT...East winds 5 to 15 knots backing northeast after midnight, then increasing to 10 to 20 knots late. A chance of rain showers. Waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. .WEDNESDAY...Northeast winds 15 to 25 knots diminishing to 10 to 20 knots in the afternoon. Patchy fog through early afternoon. A chance of rain showers. Waves building to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 5 feet occasionally to 7 feet. .WEDNESDAY NIGHT...Northeast winds 10 to 20 knots increasing to 15 to 25 knots after midnight. Waves subsiding to 2 to 4 feet, then building to 3 to 6 feet occasionally to 8 feet. .THURSDAY...Northeast winds 15 to 25 knots diminishing to 10 to 20 knots by mid afternoon. Waves subsiding to 2 to 4 feet. .THURSDAY NIGHT...Northwest winds 5 to 15 knots backing west after midnight. Waves subsiding to calm to 2 feet. .FRIDAY...Southwest winds 5 to 15 knots veering northwest. Waves calm to 2 feet. .SATURDAY...West winds 5 to 15 knots. Waves calm to 2 feet. $$ LSZ264-072200- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 946 AM EDT Tue May 7 2024 .REST OF TODAY...East winds 10 to 20 knots increasing to 15 to 25 knots in the afternoon, then diminishing to 10 to 20 knots late. A slight chance of rain showers by mid afternoon. Waves 1 to 3 feet building to 3 to 5 feet occasionally to 7 feet. .TONIGHT...Southeast winds 10 to 20 knots becoming east 5 to 15 knots after midnight, then becoming northeast 15 to 25 knots late. A chance of rain showers. Waves subsiding to 1 to 3 feet, then building to 3 to 5 feet occasionally to 7 feet. .WEDNESDAY...Northeast winds 20 to 30 knots diminishing to 5 to 15 knots. Patchy fog through early afternoon. A slight chance of rain showers. Waves subsiding to 2 to 4 feet. .WEDNESDAY NIGHT...Northeast winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. Waves subsiding to 1 to 3 feet, then building to 3 to 6 feet occasionally to 8 feet. .THURSDAY...Northeast winds 10 to 20 knots becoming north 5 to 15 knots by mid afternoon. Waves subsiding to 1 to 3 feet. .THURSDAY NIGHT...Northwest winds 5 to 15 knots. Waves subsiding to calm to 2 feet. .FRIDAY...Southwest winds 5 to 15 knots backing south. Waves calm to 2 feet. .SATURDAY...West winds 5 to 15 knots. Waves calm to 2 feet. $$ LSZ265-072200- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 946 AM EDT Tue May 7 2024 .REST OF TODAY...East winds 10 to 20 knots increasing to 15 to 25 knots in the afternoon, then diminishing to 10 to 20 knots late. A chance of rain showers by mid afternoon. Waves 1 to 3 feet building to 2 to 4 feet. .TONIGHT...East winds 10 to 20 knots backing northeast late. Rain showers likely. Waves subsiding to 1 to 3 feet. .WEDNESDAY...Northeast winds 15 to 25 knots backing north in the afternoon, then diminishing to 10 to 20 knots late. Patchy fog through early afternoon. A chance of rain showers. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. .WEDNESDAY NIGHT...North winds 10 to 20 knots veering northeast after midnight. Waves subsiding to 1 to 3 feet. .THURSDAY...Northeast winds 10 to 20 knots backing north by mid afternoon. Waves building to 2 to 4 feet. .THURSDAY NIGHT...Northwest winds 10 to 20 knots backing west after midnight. Waves subsiding to calm to 2 feet. .FRIDAY...West winds 10 to 20 knots becoming southeast 5 to 15 knots. Waves calm to 2 feet. .SATURDAY...Northwest winds 10 to 20 knots backing west. Waves calm to 2 feet. $$ LSZ266-072200- 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 Tue May 7 2024 .REST OF TODAY...East winds 10 to 20 knots increasing to 15 to 25 knots in the afternoon, then diminishing to 10 to 20 knots late. A chance of rain showers by mid afternoon. Waves 1 to 3 feet building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. .TONIGHT...Southeast winds 10 to 20 knots backing northeast late. A chance of rain showers through midnight, then rain showers likely after midnight. Waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. .WEDNESDAY...Northeast winds 20 to 30 knots diminishing to 15 to 25 knots in the afternoon, then becoming north 10 to 20 knots late. Patchy fog through early afternoon. A chance of rain showers. Waves building to 3 to 6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet. .WEDNESDAY NIGHT...Northeast winds 15 to 25 knots. Waves subsiding to 1 to 3 feet, then building to 3 to 5 feet occasionally to 7 feet. .THURSDAY...Northeast winds 10 to 20 knots backing north by mid afternoon. Waves subsiding to 2 to 4 feet. .THURSDAY NIGHT...North winds 10 to 20 knots backing northwest after midnight. Waves subsiding to 1 to 3 feet. .FRIDAY...Northwest winds 10 to 20 knots backing south. Waves subsiding to calm to 2 feet. .SATURDAY...Northwest winds 10 to 20 knots. Waves calm to 2 feet. $$ LSZ267-072200- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 946 AM EDT Tue May 7 2024 .REST OF TODAY...East winds 10 to 20 knots becoming southeast 15 to 25 knots late. Waves calm to 2 feet building to 2 to 4 feet. .TONIGHT...Southeast winds 10 to 20 knots backing northeast late. A chance of rain showers through midnight, then rain showers likely after midnight. Waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. .WEDNESDAY...Northeast winds 15 to 25 knots becoming north 10 to 20 knots late. Patchy fog through early afternoon. Rain showers likely through early afternoon, then a chance of rain showers by mid afternoon. Waves subsiding to 1 to 3 feet. .WEDNESDAY NIGHT...Northeast winds 10 to 20 knots increasing to 15 to 25 knots after midnight. Waves building to 3 to 5 feet occasionally to 7 feet. .THURSDAY...Northeast winds 15 to 25 knots backing north by mid afternoon. Waves subsiding to 2 to 4 feet, then building to 3 to 5 feet occasionally to 7 feet. .THURSDAY NIGHT...North winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. Waves subsiding to 1 to 3 feet. .FRIDAY...Northwest winds 10 to 20 knots backing south. Waves subsiding to calm to 2 feet. .SATURDAY...Northwest winds 10 to 20 knots. Waves calm to 2 feet. $$ LSZ261-072200- MAFOR 0715/ Superior West 11240 11246 11136 13120 12130. Waves 5 to 8 feet this afternoon. Waves 4 to 7 feet subsiding to 3 to 6 feet tonight. Waves 2 to 4 feet Wednesday morning. Superior North Central 11330 12230 11320 11210 11120 11130 11140. A chance of rain showers tonight and Wednesday morning. Waves 2 to 5 feet this afternoon and tonight. Waves 3 to 6 feet Wednesday morning. Superior South Central 11220 11230 11320 11210 12216 11126 11130. Waves 2 to 5 feet. Superior East 12220 12320 11310 11226 11126 11130. Waves 1 to 4 this afternoon and tonight, building to 3 to 5 feet Wednesday morning. $$ GS Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes