Offshore Forecast
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465
FZPN23 KWNM 181704
OFFN08

NAVTEX Marine Forecast for northern California waters
NWS Ocean Prediction Center Washington DC
1004 AM PDT Sat Oct 18 2025

Conditions given represent the highest within that period.

...Please refer to Coastal Waters Forecasts (CWF) available
through NOAA Weather Radio and other means for detailed coastal
waters forecasts...

.SYNOPSIS...A trough along the California coast will persist
today. A weak high pressure ridge will build S into the outer
northern waters today, followed by a cold front moving SE across
the northern waters tonight through Sun. The front will then move
SW away from the central waters Sun night, as ridging returns to
the outer northern waters, and the coastal trough rebuilds along
the northern and central California coast. The coastal trough
will persist through Mon night then gradually weaken Tue through
Wed. It will dissipate Wed night as a cold front moves SE into
the northern waters.

Point Saint George to Point Arena

.TODAY...N winds 10 to 20 kt. Seas 9 to 13 ft.
.TONIGHT...W to NW winds 15 to 25 kt. Seas 8 to 12 ft.
.SUN...N winds 15 to 25 kt. Seas 11 to 18 ft. Slight chance of
rain.
.SUN NIGHT...N winds 20 to 30 kt. Seas 13 to 18 ft.
.MON...N winds 20 to 30 kt. Seas 11 to 18 ft.
.MON NIGHT...N winds 20 to 30 kt. Seas 9 to 13 ft.
.TUE...N winds 15 to 25 kt. Seas 9 to 15 ft.
.TUE NIGHT...N winds 10 to 20 kt. Seas 11 to 17 ft.
.WED...N to NW winds 5 to 15 kt. Seas 8 to 14 ft.
.WED NIGHT...S to SW winds 10 to 20 kt. Seas 7 to 11 ft.

Point Arena to Point Piedras Blancas

.TODAY...N winds 10 to 20 kt. Seas 9 to 13 ft.
.TONIGHT...N winds 10 to 20 kt. Seas 7 to 12 ft.
.SUN...N winds 15 to 25 kt. Seas 7 to 10 ft.
.SUN NIGHT...N winds 20 to 30 kt. Seas 10 to 17 ft.
.MON...N winds 20 to 30 kt. Seas 11 to 18 ft.
.MON NIGHT...N winds 15 to 25 kt. Seas 8 to 13 ft.
.TUE...N winds 15 to 25 kt. Seas 7 to 13 ft.
.TUE NIGHT...N to NW winds 10 to 20 kt. Seas 10 to 14 ft.
.WED...N to NW winds 5 to 15 kt. Seas 7 to 13 ft.
.WED NIGHT...N to NW winds 5 to 15 kt. Seas 6 to 10 ft.