Expires:202207032145;;610069 FZUS63 KMQT 031339 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 939 AM EDT Sun Jul 3 2022 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...Broad sfc high pressure of 30.2 inches will drift over the Great Lakes region today. As the high moves to the Mid- Atlantic states tonight, a 29.8 inch low pressure trough will develop northeast across the Northern Plains toward the Upper Mississippi Valley. This trough will develop farther into the northern Great Lakes on Monday. As the trough then aligns from the Central Plains to the Lower Great Lakes region during Tuesday, a broad 30.1 inch high pressure will build southeast across northern Ontario. As this high shifts toward southern Quebec on Wednesday, a 29.9 inch low pressure trough will move east to the Dakotas. This trough will cross Lake Superior on Thursday or Friday. In its wake, 30.2 inch high pressure will build southeast to northern Ontario. && LSZ265-032145- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 939 AM EDT Sun Jul 3 2022 .REST OF TODAY...West winds 5 to 15 knots backing east in the afternoon, then becoming southeast 10 to 20 knots late. Waves calm to 2 feet. .TONIGHT...Southeast winds 10 to 20 knots. Showers. A chance of thunderstorms after midnight. Patchy fog after midnight. Waves calm to 2 feet. .MONDAY...Southeast winds 10 to 20 knots backing east late. Showers likely and a chance of thunderstorms. Waves calm to 2 feet. .MONDAY NIGHT...East winds 10 to 20 knots backing northeast after midnight. A chance of showers and thunderstorms. Waves calm to 2 feet. .TUESDAY...North winds 10 to 20 knots diminishing to 5 to 15 knots by mid afternoon. Waves calm to 2 feet. .TUESDAY NIGHT...North winds 5 to 15 knots veering east after midnight. Waves calm to 2 feet. .WEDNESDAY...East winds 5 to 15 knots becoming southeast 10 to 20 knots. Waves calm to 2 feet. .THURSDAY...North winds 10 to 20 knots diminishing to 5 to 15 knots. Waves calm to 2 feet. $$