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Hawaiian Islands Synoptic Discussion and Guidance |
FXHW60 PHFO 300130
Area Forecast Discussion
National Weather Service Honolulu HI
330 PM HST Fri May 29 2020
Breezy trade winds with limited windward showers are expected
through the weekend. Increasing shower coverage is possible early
next week as enhanced moisture rides in with the trades.
A high pressure ridge to the north will maintain breezy trade
winds into next week. Through the weekend, limited showers will
focus over windward and mountain areas as the trades push moisture
into the windward mountain slopes. Some brief showers will reach
leeward locations as well with the best chances overnight and into
the early morning hours. Models are anticipating an old frontal
boundary to bring increased trade winds showers Tuesday into
Wednesday as the boundary works through the island terrain.
A rather benign trade weather pattern will persist into Saturday,
with moderate ENE trade winds delivering stable (and a few
showery) low clouds that will primarily affect windward areas.
Additionally, expect evening clouds to drop a few showers over
leeward slopes of the Big Island, with gradual overnight clearing.
While these showers may result in brief MVFR VIS/CIG, no AIRMETs
are expected as VFR conditions will prevail.
High pressure ridging north of the islands will maintain moderate
to locally breezy trade winds over Hawaiian coastal waters.
However, winds this afternoon have eased sufficiently to be able
to cancel the Small Craft Advisory (SCA) that had been posted
over the windier areas around Maui County and the Big Island. If
trades become a bit stronger over the next day or two, an SCA may
again be warranted for those typically windy zones.
A series of swells from the southern hemisphere will maintain
moderate surf along south facing shores through the weekend. A
large south swell building early next week could produce surf
above the High Surf Advisory (HSA) level by Wednesday.
Surf will remain well below HSA levels along other shores. A small
north swell will build Saturday, then fade out Sunday. A small
northwest swell is expected through the middle of next week. Surf
along east facing shores will remain small.
Bulletins, Forecasts and Observations are courtesy of Honolulu National Weather Service Forecast Office
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It was last modified on: Wed, Dec 17 2014 - 1841 UTC
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