SYNOPSIS...Low pressure and a trailing frontal system will move NE over the central and northern waters tonight and Wed with the low and front dissipating Wed night. A cold front will move into the far NW portion Wed and continue SE into the central waters Wed night. The front will then pass SE of the area Thu. A ridge of high pressure will build E into the central and southern waters Thu through Fri night, expand over the northern waters Sat and Sat night, then persist W and NW of the waters Sun and Sun night.