Coastal Waters Forecast for Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border (LSZ264) (Text-Only)
NWS Forecast for: Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border (LSZ264)
Issued by: National Weather Service Marquette, MI
Last Update: 1000 PM EDT Thu Apr 2 2026
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Rest Of Tonight: Northeast gales to 35 knots becoming north 20 to 30 knots late. Snow by midnight. A slight chance of sleet. A chance of snow, possibly mixed with freezing rain after midnight. Waves 10 to 14 feet occasionally to 18 feet subsiding to 7 to 10 feet occasionally to 13 feet.

Friday: North winds 20 to 30 knots diminishing to 15 to 25 knots in the afternoon, then becoming northeast 10 to 20 knots late. A slight chance of snow showers through early afternoon. Waves subsiding to 2 to 4 feet.

Friday Night: East winds 15 to 25 knots increasing to gales to 35 knots after midnight. A slight chance of rain, snow and sleet through midnight, then snow, possibly mixed with sleet, rain likely and freezing rain after midnight. Waves building to 7 to 10 feet occasionally to 13 feet.

Saturday: East gales to 35 knots diminishing to 20 to 30 knots by mid afternoon. Sleet through early afternoon. Snow. A slight chance of rain showers by mid afternoon. Waves building to 8 to 11 feet occasionally to 14 feet, then subsiding to 6 to 9 feet occasionally to 11 feet.

Saturday Night: North winds 20 to 30 knots becoming northwest gales to 35 knots after midnight. Snow showers likely through midnight, then a slight chance of snow showers after midnight. Waves subsiding to 5 to 8 feet occasionally to 10 feet, then building to 7 to 10 feet occasionally to 13 feet.

Sunday: Northwest gales to 35 knots becoming west 15 to 25 knots by mid afternoon. Waves subsiding to 1 to 3 feet.

Sunday Night: West winds 5 to 15 knots becoming north 10 to 20 knots after midnight. Waves building to 2 to 4 feet.

Monday: North winds 15 to 25 knots. A chance of snow showers. Waves building to 4 to 7 feet occasionally to 9 feet, then subsiding to 2 to 4 feet.

Tuesday: West winds 10 to 20 knots becoming south gales to 35 knots. Waves subsiding to calm to 2 feet, then building to 6 to 9 feet occasionally to 11 feet.







Zone Forecast: Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border (LSZ264)

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