National Weather Service United States Department of Commerce

Cold Temperatures for the Eastern U.S.; Lake Effect Snow in the Great Lakes; Heavy Rain in the Pacific Northwest

Cold temperatures will continue across much of the eastern U.S. into today. Heavy lake effect snow continues into today east of Lakes Erie and Ontario. Two Pacific cold fronts will cross the Pacific Northwest early this week followed by another atmospheric river. Heavy rain and gusty winds are expected through midweek, with the potential for renewed urban and river flooding. Read More >

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Eastern Lake Superior

Eastern Lake Superior Marine Hazards

Last Updated: Mon Dec 15 22:05:03 GMT 2025.

Tonight Tuesday Tuesday Night Wednesday
8p 9p 10p 11p 12a 1a 2a 3a 4a 5a 6a 7a 8a 9a 10a 11a 12p 1p 2p 3p 4p 5p 6p 7p 8p 9p 10p 11p 12a 1a 2a 3a 4a 5a 6a 7a 8a 9a 10a 11a 12p 1p 2p 3p 4p 5p 6p 7p
Hour 0

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: Mon Dec 15 22:05:03 GMT 2025.

Tonight Tuesday Tuesday Night Wednesday
8p 9p 10p 11p 12a 1a 2a 3a 4a 5a 6a 7a 8a 9a 10a 11a 12p 1p 2p 3p 4p 5p 6p 7p 8p 9p 10p 11p 12a 1a 2a 3a 4a 5a 6a 7a 8a 9a 10a 11a 12p 1p 2p 3p 4p 5p 6p 7p
Hour 0

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