Excessive Rainfall Potential for the Southeast; Heat Expands for Center of the Nation; Critical Fire Weather for Pacific Northwest

Flash flooding threatens areas from the Tennessee Valley to the Carolinas as storms repeat along a stalled front. Monsoonal storms may trigger flooding in the Southwest. Dangerous heat expands across the Desert Southwest, Plains, mid-Mississippi Valley and Southern Tier. Critical fire weather for interior Pacific Northwest. Cooler, drier air brings brief relief to the Great Lakes and Northeast. Read More >

Coastal Waters Forecast for Lake Michigan from St Joseph to South Haven MI 5NM offshore to Mid Lake (LMZ878) (Text-Only)
NWS Forecast for: Lake Michigan from St Joseph to South Haven MI 5NM offshore to Mid Lake (LMZ878)
Issued by: National Weather Service Grand Rapids, MI
Last Update: 353 AM CDT Sun Jul 26 2026


Today: Southwest winds 10 to 15 kt becoming south 10 to 20 kt. Waves 1 to 2 ft.

Tonight: South winds 10 to 15 kt. Slight chance of showers and thunderstorms in the evening, then chance of showers and slight chance of thunderstorms overnight. Waves 1 to 3 ft.

Monday: South winds 10 to 15 kt increasing to 10 to 20 kt. Showers likely in the morning, then chance of showers in the afternoon. Waves 1 to 3 ft.

Monday Night: West winds 10 to 20 kt veering to north 15 to 25 kt. Chance of showers and thunderstorms in the evening, then chance of showers overnight. Waves 2 to 4 ft building to 4 to 7 ft occasionally to 9 ft.

Tuesday: North winds to 30 kt increasing to gales to 35 kt. Waves 6 to 9 ft occasionally to 12 ft building to 8 to 11 ft occasionally to 14 ft.

Tuesday Night: North gales to 35 kt diminishing to 10 to 20 kt. Waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to 8 ft occasionally to 10 ft.

Wednesday: North winds 10 to 20 kt increasing to 30 kt. Waves 3 to 5 ft.

Thursday: East winds 10 to 15 kt becoming northeast 10 to 20 kt. Waves 1 to 3 ft.







Zone Forecast: Lake Michigan from St Joseph to South Haven MI 5NM offshore to Mid Lake (LMZ878)

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