Marine Weather Statement issued February 12 at 8:45PM PST by NWS Los Angeles/Oxnard CA

A strong low pressure system with an associated cold front will
bring strong winds, large seas, and the potential for
strong thunderstorms to the coastal waters beginning Thursday
morning. Any thunderstorm that forms will be capable of producing
erratic, locally gale force winds and rough seas, dangerous
lightning, heavy rainfall with reduced visibility, and
waterspouts. The cold front passage will bring widespread
southwest gale force winds for the northern coastal waters. Local
gale force gusts are expected over the remaining waters prior to
the frontal passage. Seas will also increase significantly,
ranging from 10 to 18 feet for the waters off the Central Coast,
and 6 to 10 feet for the inner waters south of Point Conception.

Conditions will be exceptionally dangerous for all but the
largest vessels. Lightning, heavy rain, gales, low visibility and
steep, choppy seas will make navigation difficult, and may damage
and or capsize vessels. Boaters are strongly advised to remain in
safe harbor.