Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Coastal Waters Forecast for Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park (LSZ263) (Text-Only)
NWS Forecast for: Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park (LSZ263)
Issued by: National Weather Service Marquette, MI
Last Update: 1000 AM EDT Sun Apr 19 2026




Rest Of Today: Northwest winds 10 to 20 knots. Flurries by mid afternoon. Waves 3 to 6 feet occasionally to 8 feet subsiding to 1 to 3 feet.

Tonight: Northwest winds 10 to 20 knots becoming north 5 to 15 knots after midnight, then backing northwest late. Flurries through midnight. Waves subsiding to calm to 2 feet.

Monday: Southwest winds 5 to 15 knots increasing to 15 to 25 knots in the afternoon, then backing south late. Waves building to 2 to 4 feet.

Monday Night: Southwest winds 15 to 25 knots veering west after midnight. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet.

Tuesday: Northwest winds 5 to 15 knots backing southwest by mid afternoon. Waves subsiding to calm to 2 feet.

Tuesday Night: Southwest winds less than 10 knots backing southeast after midnight. Waves calm to 2 feet.

Wednesday: Southeast winds 5 to 15 knots becoming east 15 to 25 knots. Waves building to 3 to 6 feet occasionally to 8 feet.

Thursday: East winds 15 to 25 knots becoming southeast 20 to 30 knots. A chance of rain showers. Waves building to 7 to 10 feet occasionally to 13 feet.







Zone Forecast: Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park (LSZ263)

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