Marine Weather for HS 102


marine weather discussion for N Pacific Ocean NWS ocean prediction center Washington DC 1250 PM PST Wed Dec 13 2017

.Forecast discussion...Major features/winds/seas/significant .Weather for the North Pacific N of 30n and E of 150w.

12z model analysis continues to show relatively good agreement. Late in the forecast, a few differences arise, but with good consistency with the GFS, will continue to use it throughout.

Confidence is increasing for gales Saturday and Saturday night. The UKMET and the GFS have both indicated gales, while the ECMWF keeps the winds below gale. With the strengthening high pressure and coastal trough, the GFS/UKMET seem like more reasonable solutions.

Will populate with the 12z GFS throughout; however, will decrease the area of gales on Saturday and Saturday night to more closely resemble the UKMET and the area of 30 kt winds in the ECMWF.

.Seas...Will populate with the wavewatch, decreasing the seas in the areas where winds were decreased Saturday and Saturday night.

.Extratropical storm surge guidance...N/A


.Pz5 Washington/Oregon waters... None.

.Pz6 California waters... .pzz820...inner waters from point St. George to Point Arena... gale possible Saturday night into Sunday. .Pzz825...Inner waters from Point Arena to Pigeon Point... gale possible Saturday into Saturday night. .Pzz830...Inner waters from Pigeon Point to Point Piedras Blancas... gale possible Saturday.


.Forecaster Sommerville. Ocean prediction center.

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