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Weather & Water

Storm Warning

Technical visualThunderstorm over water
Thunderstorm over waterA boat lies ahead of an approaching thunderstorm cell, lightning, and a bounded warning area.APPROACHING CELLVESSEL
Thunderstorm over waterA boat lies ahead of an approaching thunderstorm cell, lightning, and a bounded warning area.121APPROACHING CELL2VESSEL
Treat thunderstorm hazards as a combined wind, wave, visibility and lightning problem; use official warnings and current observations.

For non-tropical marine conditions, Storm Warning criteria concern winds from 48 through 63 knots.

Hurricane Force Wind Warning and tropical cyclone products occupy still higher or different warning contexts.

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