859
FXHW60 PHFO 121349
AFDHFO

Area Forecast Discussion
National Weather Service Honolulu HI
349 AM HST Fri Jul 12 2024

.SYNOPSIS...
Strong trade winds will persist into next week, bringing brief
showers to windward and mauka areas. Fewer leeward clouds are
expected over the weekend, while the Kona slopes will receive
their typical summertime afternoon/evening clouds and showers.

&&

.DISCUSSION...
A westward-moving mid-level trough at 700 mb will continue to
enhance windward and mauka low clouds and showers this morning.
Guidance continues to show the trough dissipating tonight into
Saturday. Breezy to locally windy trades will prevail into next
week as the surface ridge remains far north of the islands. ENE
trade winds will deliver low clouds and brief showers to windward
and mauka areas through the forecast period as the atmosphere
stabilizes. Leeward areas will remain mostly dry, but Kona slopes
of the Big Island will see their typical summertime afternoon and
evening clouds and showers. May see an uptick in windward clouds
and showers late next week as a weak upper level disturbance
develops north of the state.

&&

.AVIATION...
A weak disturbance moving through the islands will enhance low
clouds, and windward showers. Breezy to locally windy trades will
continue for the next few of days, with passing showers favoring
windward and mountain areas. Mostly VFR conditions will prevail,
with brief periods of MVFR in showers/low clouds mainly in the
overnight to early morning hours.

AIRMET Sierra for tempo mountain obscuration remains in effect
for north through east sections of Kauai, Oahu, Molokai, Maui and
the Big Island. These low cloud ceilings will improve later this
morning.

AIRMET Tango for low-level turbulence over and in the lee of
island terrain will remain in effect for the next several days due
to the strong trades.

&&

.MARINE...
Strong- to near gale-force east to northeast trades with seas up
to the 10 ft advisory level will continue through early next week
as the ridge holds strong to the north. The strong trades could
ease slightly later next week as the ridge weakens.

Surf along east facing shores will remain rough through early next
week due to the strong trades locally and upstream of the state. A
downward trend is possible around midweek as the upstream fetch
weakens and the local trades begin to ease.

Surf along south facing shores will remain up as overlapping
south-southwest swells move through. A fresh south-southwest that
has filled in will result in an gradually upward trend through
Saturday. A more significant south swell will gradually fill in
late Saturday night into Sunday, then likely reach the advisory
level late Sunday through Monday. A gradual downward trend is
expected Tuesday through midweek.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
Small Craft Advisory until 6 PM HST Saturday for all Hawaiian
waters-

&&

$$

DISCUSSION...Ahue
AVIATION...Bohlin
MARINE...Gibbs