Sinlaku Continues to Impact the Marianas; Severe Weather for the Central Plains and Northeast; Record Warmth for mid-Atlantic to Southeast
Sinlaku continues to affect the Marianas as it moves north through Friday. Meanwhile, severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley today and for the Central/Southern Plains on Friday. Considerable flooding impacts are ongoing in the Upper Great Lakes, and expected to continue through the weekend. Fire weather concerns persist in the Plains. Read More >
Last Update: 500 PM EDT Thu Apr 16 2026
For More Weather Information:
3NM WNW Copper Harbor MI
Marine Zone Forecast
Late This Afternoon
East wind less than 10 knots. Partly cloudy. Patchy dense fog. Waves calm to 1 foot.
Tonight
Southeast wind 10 to 20 knots becoming 15 to 20 knots late. Partly cloudy. Patchy fog through late evening, then widespread dense fog by midnight. Areas of dense fog late. Waves building to 2 to 4 feet.
Friday
Southeast wind up to 30 knots. Mostly cloudy. Areas of dense fog through mid morning. A slight chance of rain showers late. Waves building to 6 to 9 feet occasionally to 11 feet.
Friday Night
South wind up to 30 knots veering west 15 to 25 knots after midnight. Cloudy. Rain showers and a chance of thunderstorms in the evening, then a chance of rain showers possibly mixed with freezing rain, snow showers and sleet after midnight. Waves building to 7 to 10 feet occasionally to 13 feet, then subsiding to 3 to 6 feet occasionally to 8 feet.
Saturday
West wind up to 30 knots with gale force gusts up to 40 knots. Mostly cloudy. A slight chance of snow showers possibly mixed with rain showers and sleet in the morning, then a slight chance of snow showers in the afternoon. Waves building to 7 to 10 feet occasionally to 13 feet.
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