NORTHERN CALIFORNIA WATERS

SYNOPSIS...A low pressure trough along the central and N coast of California tonight will weaken through Sat. A high pressure ridge will move SE into the northern waters tonight through Sat while weakening. The low pressure trough will redevelop over the central and N California coast Sat night through Mon night, then persist through Tue night. High pressure NW of the region will build E Sat night through Mon night, and remain through Tue night.