SYNOPSIS...A high pressure ridge will drift SE across the northern and into the central waters today and tonight, and weaken Thu and Thu night as another cold front approaches the N waters. The front will move across the N and central waters Fri into Fri night, and move into the S waters Sat and dissipate. Yet another strong cold front will approach the waters Sat and Sat night. A low pressure trough will strengthen along the southern and central California coast today, then slowly weaken tonight into Thu. A high pressure ridge will build across the SE portion Sat into Sun night.