Expires:202101172300;;058995 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. LSZ267-172300- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 956 AM EST Sun Jan 17 2021 .REST OF TODAY...Northeast winds 10 to 20 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet. .TONIGHT...Northeast winds 10 to 20 knots veering east by midnight, then diminishing to 5 to 15 knots late. Waves subsiding to calm to 2 feet. .MONDAY...East winds 5 to 15 knots veering south by mid afternoon. A slight chance of snow showers in the afternoon. Waves calm to 2 feet. .MONDAY NIGHT...South winds 5 to 15 knots becoming northwest 15 to 25 knots after midnight. A chance of snow showers in the evening, then snow showers likely after midnight. Waves building to 3 to 5 feet occasionally to 7 feet. .TUESDAY...Northwest winds 15 to 25 knots. Freezing spray. Snow showers likely. Waves building to 3 to 6 feet occasionally to 8 feet. .TUESDAY NIGHT...Northwest winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. Freezing spray in the evening. Snow showers likely. Waves subsiding to 2 to 4 feet. .WEDNESDAY...South winds 20 to 30 knots. Snow showers likely. Waves building to 5 to 8 feet occasionally to 10 feet. .THURSDAY...West winds 20 to 30 knots veering northwest. Snow showers likely. Waves building to 7 to 10 feet occasionally to 13 feet, then subsiding to 5 to 8 feet occasionally to 10 feet. $$