Snow Across the Great Lakes, Central Appalachians, and Northeast; Unsettled Weather in the West

Light to moderate snow will continue into Saturday over the Great Lakes, Central Appalachians, and Northeast. This weekend into next week, a series of atmospheric rivers will bring gusty winds, periods of heavy rain, and mountain snow to northern California and the Pacific Northwest. Colder temperatures are in store for the weekend from the Great Lakes to East Coast. Read More >

Wave Heights in Gulf Stream Nomogram

gulf wind wave nomogram

Significant wave heights over the Gulf Stream for wind speed/direction with an 18 hour duration. Red contours trace the wave height. Note that a 20 knot northeast wind can build sea heights in the Gulf Stream to around 12 feet and a 15 knot northeast wind can build sea heights to about 9 feet!

Boaters sometimes complain that the Coastal Waters Forecast underestimates the wave heights, when in fact they actually ventured out into the Gulf Stream when there was a north to northeast wind! Additionally, wave theory predicts that wave heights will occasionally be higher.

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Snow Across the Great Lakes, Central Appalachians, and Northeast; Unsettled Weather in the West

NWS Melbourne Gulf Stream Nomogram