NORTHERN CALIFORNIA WATERS

SYNOPSIS...A low pressure trough along the central and northern California coast will will gradually weaken today. The trough will then drift south over the central California waters late today into tonight and dissipate Wed. An area of high pressure will build in from the W tonight into Wed, then gradually shift to the southern waters Wed night into Thu night. A weak cold front will move into the NW portion Thu, then reach the central waters Thu night into Fri. The front will then enter the southern waters Fri night. High pressure will rebuild W of the waters Thu night into Fri night. Later Fri night a cold front will approach the northern waters, then move E across those waters Sat and Sat night.