Western Lake Superior

Western Lake Superior Marine Hazards

Last Updated: Thu May 29 04:05:03 GMT 2025.

Tonight

Thursday

Thursday Night

Friday

Sample points represent (from top to bottom): Wind Direction and Speed (kts), Wind Gust (kts), and Wave Height (ft)

Marine Hazards Legend
Threat	Sustained Wind Speed (kts)	Wind Gust (kts)	Wave Height (ft)
None	< 15	< 15	< 2
Limited	15-23 knots	15-23 knots	2-3.9 ft
Elevated	24-33 knots	24-33 knots	4-6.9 ft
Significant	≥ 34 knots	≥ 34 knots	≥ 7 ft

Eastern Lake Superior

Eastern Lake Superior Marine Hazards

Last Updated: Thu May 29 04:05:03 GMT 2025.

Tonight

Thursday

Thursday Night

Friday

Sample points represent (from top to bottom): Wind Direction and Speed (kts), Wind Gust (kts), and Wave Height (ft)

Marine Hazards Legend
Threat	Sustained Wind Speed (kts)	Wind Gust (kts)	Wave Height (ft)
None	< 15	< 15	< 2
Limited	15-23 knots	15-23 knots	2-3.9 ft
Elevated	24-33 knots	24-33 knots	4-6.9 ft
Significant	≥ 34 knots	≥ 34 knots	≥ 7 ft

Northwestern Lake Michigan

Lake Michigan Marine Hazards

Last Updated: Thu May 29 04:05:03 GMT 2025.

Tonight

Thursday

Thursday Night

Friday

Sample points represent (from top to bottom): Wind Direction and Speed (kts), Wind Gust (kts), and Wave Height (ft)

Marine Hazards Legend
Threat	Sustained Wind Speed (kts)	Wind Gust (kts)	Wave Height (ft)
None	< 15	< 15	< 2
Limited	15-23 knots	15-23 knots	2-3.9 ft
Elevated	24-33 knots	24-33 knots	4-6.9 ft
Significant	≥ 34 knots	≥ 34 knots	≥ 7 ft