marine weather discussion for N Pacific Ocean NWS ocean prediction center Washington DC 134 PM PDT Thu may 25 2017
.Forecast discussion...Major features/winds/seas/significant .Weather for the North Pacific N of 30n and E of 150w.
At 18z a weakening cold front was located across the southern pz6 waters while a high pressure ridge was located across the remainder of the pz5 and pz6 waters. Latest ascat high resolution pass revealed mainly 15-25 kt winds over the pz6 and northern pz6 waters with pockets of 30 kt winds in the northern pz5 waters and northeast pz6 waters. 5-15 kt winds were noted over the southern pz6 waters east of 120w. With the 12z guidance in fairly good agreement over the forecast period decided to populate grids with the 12z GFS through Mon 12z, allowing prior grids from last night to remain in place Mon night through the end of the period Tue night. Currently no warning headlines are expected over the forecast period at this moment. Anticipate fairly tranquil pattern over much of the forecast period with a series of high pressure ridges over the waters allowing for winds mainly 20 kt or less through Sun night. Come Mon guidance is in agreement with a low pressure trough strengthening along the central and southern CA coast and interacting with high pressure ridging allowing winds to increase to around 25 kt Mon through Tue night in the parts of the adjacent central and southern pz6 waters.
.Seas...Favored 50/50 blend of 12z nww3 and ECMWF wam through Fri 12z, transitioning to the 12z nww3 only through Mon 12z, then leaving in prior wave grids from last night's forecast.
.Extratropical storm surge guidance...N/A.
.Pz5 Washington/Oregon waters... None.
.Pz6 California waters... None.
.Forecaster Holley. Ocean prediction center.