WASHINGTON AND OREGON WATERS

SYNOPSIS...High pressure SW of the region tonight will become a N to S oriented ridge situated just W of the waters from Fri through Sun night. The ridge will weaken W of the area Sun night through Tue . A weak low pressure trough will persist along the Vancouver Island coast tonight through Sat night then dissipated. A stronger coastal trough will also develop along the S Oregon coast tonight and persist through Sat, then build N along the rest of the Oregon coast Sat night and persist through Tue night.