Issued for average wind speeds of 20 knots to 33 knots, and/or forecast seas of 7 feet or greater. Either condition must occur for at least 2 hours. (locally defined criteria)
An advisory to alert mariners of expected or occurring conditions which are considered potentially hazardous to small weather sensitive boats. This statement is highlighted in the marine forecast when winds are expected to be greater than 20 knots or seas 7 feet or higher.
a type of warning issued by the National Weather Service in the United States , most frequently in coastal areas
a marine advisory issued for sustained winds and/or frequent gusts greater than twenty knots.
Wind of 21 knots to 33 knots sustained or frequent gusts.
Winds in excess of 22 knots (25 mph), and less than 34 knots (39 mph), that may cause hazardous conditions for operators of small vessels.
A warning of winds from 20 to 33 knots or for sea conditions either forecasted or occurring that are considered potentially hazardous to small boats in coastal waters.
A marine advisory generally issued for winds greater than 23 mph (20 knots) but less than 38 mph (33 knots).
An advisory issued for marine interests, especially for operators of small boats or other vessels. Conditions include wind speeds between 20 knots (23 mph) and 34 knots (39 mph).
See Severe weather terminology for a comprehensive article on related weather terms.