Marine Weather for HS 102


marine weather discussion for N Pacific Ocean NWS ocean prediction center Washington DC 139 am PDT Tue Jun 27 2017

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

The main impact for this forecast will be high pressure building west of the waters with an intensifying California coastal trough. This will likely be enough to cause some gales; however, expect those to remain in the coastal waters.

There is still some possibility that gales expected to the north of the waters could reach into the Washington waters Tuesday, but with very little confidence, will not add them to the forecast. Will continue monitoring this area for gale potential.

Will use the 10m GFS through 00z Sunday, then will edit the forecast to adjust some of the stronger winds more towards the ECMWF. Warning headlines will not change from the previous forecast.

Hurricane Dora is located well south and southeast of the offshore waters, near 18.8n 109.2w. It is forecast to move mainly west and is expected to weaken over the next few days with no major impact on the offshore zones. For additional information on Dora, please see the latest advisory issued by the National Hurricane Center.

.Seas...ECMWF seems to have better agreement with the observations so will use it through 12z Wed, then will use the wavewatch through the end of the forecast. Will adjust the seas down late in the forecast as the wavewatch seems a bit too high.

.Extratropical storm surge guidance...N/A


.Pz5 Washington/Oregon waters... None.

.Pz6 California waters... None.


.Forecaster Sommerville. Ocean prediction center.

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