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Grand Portage to Grand Marais MN

LSZ140 · Nearshore Marine Forecast · National Weather Service Duluth MN · Issued 156 PM CDT Sat Oct 3 2026
Small Craft Advisory In Effect From 5 PM This Afternoon To 1 AM CDT Sunday
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Forecast
Rest Of Today
Southeast wind 10 to 15 knots. Gusts up to 25 knots late. Rain showers likely. Waves 1 to 2 feet building to 1 to 3 feet late.
Tonight
South wind 20 to 25 knots with gales to around 35 knots becoming west 10 to 15 knots with gusts to around 20 knots after midnight, then becoming northwest 15 to 20 knots with gusts to around 30 knots early in the morning. Rain showers in the evening. Waves 4 to 6 feet subsiding to 2 to 4 feet early in the morning. Waves occasionally to 8 feet. A gale warning may be needed.
Sunday
Northwest wind 15 to 20 knots with gusts to around 30 knots. Sunny. Waves 2 to 4 feet.
Sunday Night
Northwest wind 10 to 15 knots. Gusts up to 25 knots. Mostly clear. Waves 1 to 2 feet.
Source: National Weather Service Nearshore Marine Forecast (NSH), issued 156 PM CDT Sat Oct 3 2026, valid until Sat, 03 Oct 2026 22:00 UTC. Original text · All zones