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fzhw52 phfo 201339

surf zone forecast
national weather service honolulu hi
339 am hst mon nov 20 2017

339 am hst mon nov 20 2017

...high surf advisory for north facing shores...

surf along north facing shores will be 15 to 20 feet this morning 
lowering to 10 to 14 feet late this afternoon. surf will be 8 to 12 
feet tuesday.

surf along west facing shores will be 6 to 10 feet this morning,
lowering to 5 to 8 feet this afternoon. surf will be 3 to 6 feet 

surf along east facing shores will be 3 to 6 feet today with locally 
higher sets along shores exposed to the north swell. surf will be 
2 to 4 feet tuesday.

surf along south facing shores will be 1 to 3 feet today, and 2 to 4 
feet tuesday.

outlook through monday november 27:
the current north swell is on its way down. another large north swell
is expected to reach our northern shores wednesday, peak thursday,
followed by a slow decline into the weekend. a high surf warning is
likely with this swell for all islands with a northern exposure.
forecast models are showing another large north swell slated to arrive
sunday. locally generated swell from the strong gusty trade winds
during the second half of the work week may warrant a high surf
advisory for the east facing shores as well. waters will turn
dangerously very rough and choppy along with the elevated surf. a
series of small but long period swells will keep surf from going flat
along the south facing shores this week.

surf heights are forecast heights of the face, or front, of waves. the
surf forecast is based on the significant wave height, the average
height of the one third largest waves, at the locations of the largest
breakers. some waves may be more than twice as high as the
significant wave height. expect to encounter rip currents in or near
any surf zone.


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