Expires:202306071615;;698246 FZUS63 KMQT 070802 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 402 AM EDT Wed Jun 7 2023 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...High pressure of 30.3 inches over Hudson Bay will extend a 30.0 inch ridge into the western Great Lakes today through Thursday. As the ridge weakens to 29.9 inches while drifting southeast during Thursday night and Friday, a 29.8 inch low pressure trough will approach Lake Superior from the northwest. This trough will cross Lake Superior Friday night and then stall out from southern Ontario to the Mid-Mississippi Valley late Saturday through Sunday. In its wake, 30.1 inch high pressure will build across northern Ontario during the weekend. Late Sunday, 29.7 inch low pressure will track east into Indiana. LSZ265-071615- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 402 AM EDT Wed Jun 7 2023 .EARLY THIS MORNING...Northeast winds 5 to 15 knots. Waves calm to 2 feet. .TODAY...Northeast winds 5 to 15 knots becoming north 10 to 20 knots in the afternoon, then becoming northwest 5 to 15 knots late. Waves calm to 2 feet. .TONIGHT...Northwest winds 5 to 15 knots. Waves calm to 2 feet. .THURSDAY...Northwest winds 5 to 15 knots veering north in the afternoon, then backing northwest late. Waves calm to 2 feet. .THURSDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet. .FRIDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet. .FRIDAY NIGHT...South winds 5 to 15 knots backing north after midnight. A chance of showers. Waves calm to 2 feet. .SATURDAY...North winds 10 to 20 knots. Waves building to 1 to 3 feet. .SUNDAY...North winds 10 to 20 knots backing northwest. Waves subsiding to calm to 2 feet. $$