Marine Weather for HS 102


marine weather discussion for N Pacific Ocean NWS ocean prediction center Washington DC 106 PM PDT Fri Jul 21 2017

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

The latest surface analysis indicates that a high pressure ridge west of the pz6 waters continues to combine with an inland thermal trof to produce northwest winds up to 30 knots across portions of the central and southern pz6 waters. The strongest conditions will remain west of Point Conception through tonight, then begin to weaken Saturday. The strongest conditions will then shift north to off of Point Saint George by late Saturday and Saturday night as the thermal trof strengthens, with gales mainly confined to the coastal waters. By Sunday the gales are still expected to extend into the offshore waters and then continue into Sunday night. Conditions will then weaken later Monday. Farther north, a weak cold front currently approaching the pz5 waters will move across the area later today and tonight. The latest runs of the GFS and ECMWF look to be in reasonable agreement across the eastern Pacific through Wednesday. For wind grids will continue to use the GFS 10m winds throughout. Current warnings look reasonable and few changes should be needed on the next offshore waters forecast.

The nww3 looks reasonable with the seas and will be followed fairly closely during the forecast period.

Extratropical storm surge guidance...N/A.


.Pz5 Washington/Oregon waters... .pzz815...inner waters from Florence or to point St. George... gale Sunday. Gale possible Sunday night.

.Pz6 California waters... .pzz820...inner waters from point St. George to Point Arena... gale Saturday night into Sunday. Gale possible Sunday night.


.Forecaster nolt. Ocean prediction center.

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