Expires:202101172300;;058993 FZUS63 KMQT 171456 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 956 AM EST Sun Jan 17 2021 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 29.9 inch surface trough will linger over Lake Superior through Monday. On Monday night, a weak 29.8 inch low will develop over eastern Lake Superior. A 30.2 inch low over North Dakota Tuesday morning will drop southeast into the upper Mississippi River Valley on Tuesday evening. A broad 29.2 inch low over northern Saskatchewan Wednesday morning will move southeast into Ontario by Thursday while weakening to 29.4 inches. LSZ265-172300- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 956 AM EST Sun Jan 17 2021 .REST OF TODAY...North winds 10 to 20 knots. Scattered snow showers. Waves 2 to 4 feet subsiding to 1 to 3 feet. .TONIGHT...North winds 10 to 20 knots diminishing to 5 to 15 knots by midnight, then backing northwest late. Scattered snow showers. Waves subsiding to calm to 2 feet. .MONDAY...Northwest winds 5 to 15 knots backing west by late morning, then increasing to 10 to 20 knots by mid afternoon. A chance of snow showers. Waves calm to 2 feet. .MONDAY NIGHT...North winds 15 to 25 knots backing northwest after midnight. Snow showers likely. Freezing spray after midnight. Waves building to 3 to 5 feet occasionally to 7 feet. .TUESDAY...Northwest winds 15 to 25 knots. Freezing spray. A chance of snow showers in the morning. Snow showers likely in the afternoon. Waves building to 3 to 6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet. .TUESDAY NIGHT...Northwest winds 15 to 25 knots becoming west 10 to 20 knots after midnight. Freezing spray in the evening. A chance of snow showers. Waves subsiding to 1 to 3 feet. .WEDNESDAY...South winds 20 to 30 knots veering southwest. A chance of snow showers. Waves subsiding to calm to 2 feet, then building to 3 to 6 feet occasionally to 8 feet. .THURSDAY...West gales to 35 knots becoming northwest 20 to 30 knots. A chance of snow showers, then snow showers likely. Freezing spray. Waves building to 3 to 6 feet occasionally to 8 feet. $$