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000
FXHW60 PHFO 171319
AFDHFO

Area Forecast Discussion
National Weather Service Honolulu HI
319 AM HST Wed Apr 17 2024

.SYNOPSIS...
Mostly dry and pleasant conditions will prevail through the
weekend as high pressure builds to the north. Light to moderate
northerly winds will shift out of a more typical northeast trade
wind direction today, then remain in place through the weekend. As
the trades return, clouds and light showers will favor the
typical windward and mauka locations overnight through the morning
hours.

&&

.DISCUSSION...
The latest model guidance has initialized well with the current
pattern and depicts mostly dry conditions prevailing through the
weekend as high pressure builds north of the state. The northerly
winds will linger this morning, then shift out of the northeast
through the rest of the day (light enough for localized land and
sea breeze conditions). Although mostly dry conditions will
prevail, a weak upper trough moving in today through Thursday,
combined with a remnant low-level moisture boundary settling
south into the area may be enough for a few light showers over
north through northeast facing slopes. The light northeast flow
will become breezy Thursday, briefly weaken late Friday through
Saturday as a weak system passes to the north, then shift out of
the east and return to breezy levels Sunday into early next week
as high pressure builds to the north.

&&

.AVIATION...
Light north to northeast flow will allow local sea breeze
development across sheltered areas today. Expect brief MVFR
conditions across windward and mauka locations, especially within
sparse showers. Otherwise, VFR conditions should prevail through
the TAF period.

No AIRMETS are in effect and none are expected today and tonight.

&&

.MARINE...
Light to moderate northerlies will veer to the northeast today.
High pressure will build north of the region and drift east as
trades persist into next week, becoming moderate to fresh by this
weekend.

Surf along south facing shores came in notably higher and will
hold through Thursday as overlapping south swells will keep
elevated surf through the end of the week. The current northwest
swell will become increasingly north as it gradually lowers
through Thursday. Surf along east facing shores remains small
through late week before trending up slightly as trade strengthen
late this week.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
None.

&&
$$

DISCUSSION...Gibbs
AVIATION...Powell
MARINE...Shigesato