White squall
From Freepedia
The definition of a squall requires the gust to be an increase in wind velocity of at least 16 knots (~25MPH or ~11 meters per second), last for one minute or more and then diminish. A white squall is a sudden, violent windstorm, that comes unexpectedly and without the black cloud generally charactaristic of a squall. It is so named for the white-capped waves and broken water that are its meager warning to the unlucky seaman caught in its path. The sailing vessel Albatross was alleged to have been sunk by a white squall on May 3, 1961. The film, White Squall (1996) is based on its last voyage.
Sudden, violent storms on the North American Great Lakes are also called white squalls, as related in the song "White Squall" written by Stan Rogers.
