FZUS53 KIWX 180740 NSHIWX Nearshore Marine Forecast National Weather Service Northern Indiana 340 AM EDT Mon May 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ046-181415- Michigan City IN to New Buffalo MI- 340 AM EDT Mon May 18 2026 .TODAY...South winds 10 to 15 knots becoming southwest 15 to 20 knots. Gusts up to 25 knots. A chance of showers and thunderstorms this morning, then showers likely with a chance of thunderstorms this afternoon. Waves 1 to 2 feet. .TONIGHT...South winds 10 to 15 knots increasing to 15 to 20 knots. Gusts up to 25 knots. A slight chance of showers and thunderstorms in the evening. Waves 1 to 2 feet. .TUESDAY...South winds 15 to 20 knots becoming southwest 10 to 15 knots. Gusts up to 25 knots. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet. .TUESDAY NIGHT...West winds 10 to 15 knots becoming north. Showers likely with a chance of thunderstorms in the evening. Waves 2 to 3 feet. Winds and waves higher in and near thunderstorms. The water temperature at St. Joseph is 53 degrees and at Michigan City is 51 degrees. $$ LMZ043-181415- New Buffalo MI to St Joseph MI- 340 AM EDT Mon May 18 2026 .TODAY...South winds 10 to 15 knots becoming southwest. Gusts up to 25 knots. A chance of showers and thunderstorms this morning, then showers likely with a chance of thunderstorms this afternoon. Waves 1 to 2 feet. .TONIGHT...South winds 10 to 15 knots increasing to 15 to 20 knots. Gusts up to 25 knots. A slight chance of showers and thunderstorms in the evening. Waves 1 to 2 feet. .TUESDAY...South winds 15 to 20 knots becoming southwest 10 to 15 knots. Gusts up to 30 knots. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Waves 2 to 4 feet. .TUESDAY NIGHT...West winds 10 to 15 knots becoming north. Showers likely with a chance of thunderstorms in the evening. Waves 2 to 4 feet. Winds and waves higher in and near thunderstorms. The water temperature at St. Joseph is 53 degrees and at Michigan City is 51 degrees. $$