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What is a Small Craft Advisory?

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Definition:

Small craft advisories are issued to alert mariners to sustained (more than two hours) weather or sea conditions, either present or forecast, that might be hazardous to small boats. The threshold conditions for the Small Craft Advisory are usually 18 knots of wind (less than 18 knots in some dangerous waters) or hazardous wave conditions, usually waves 4 feet or higher.

Further reading about small craft advisories:

Marine Weather Advisories, Watches and Warnings

Before Boating Know Your Marine Weather Forecast

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