266
FXHW60 PHFO 210152
AFDHFO

Area Forecast Discussion
National Weather Service Honolulu HI
352 PM HST Thu Jun 20 2024

.SYNOPSIS...
High pressure far north of the islands will support locally strong
trade winds through the weekend. Brief, passing showers will favor
windward areas, especially during nights and mornings, with a few
sprinkles occasionally spreading leeward.

&&

.DISCUSSION...
Locally strong trade winds will continue through the weekend,
with potential for some modest easing in trade wind speeds mid to
late next week as the high to the north moves northeast. Increased
precipitable water arriving tonight will mark the onset of a
somewhat wetter trade wind pattern, with increased dew points also
making it feel more humid. Clouds and showers pushing through with
the trade winds will favor windward and mauka areas, with
isolated showers spilling to leeward sides of the smaller islands
at times. Diurnal maximums for showers coverage will occur during
the nighttime and early morning hours, with breaks occurring the
middle of each day. An upper low over the area will slowly drift
westward, funneling periodic high clouds into the area for the
next several days.


&&

.AVIATION...
Breezy to locally strong trade winds will persist through the
next couple of days and usher in bands of showers to the island
chain`s windward areas. Isolated spillover showers will be
possible along leeward slopes, especially during the late night
and early morning hours. VFR conditions will generally prevail
except for in passing showers where brief MVFR conditions will be
possible.

AIRMET Tango remains in effect for low level turbulence lee of
mountains due to the breezy trade winds.

AIRMET Sierra may return across windward areas especially Big
Island later this afternoon or evening as we see a brief increase
of clouds and passing showers.

&&

.MARINE...
Surface high pressure centered around 850 nm northeast of Hawaii
will slowly expand westward this weekend into early next week and
maintain fresh to strong trades across the islands and
surrounding waters. Thus, a Small Craft Advisory remains in effect
for all local waters through Saturday night, but will likely need
to be expanded further in time.

Small background south swell energy can be noted on several of
the near shore buoys this afternoon. This should lead to minimal
south shore surf into Friday, below seasonal norms. A mix of a
small, long- period south swell and a shorter period southeast
swell may push surf close to seasonal average this weekend. As
these swells slowly decline early next week, another small, long
period south- southwest swell is expected to fill in.

Fresh to strong trades will bring elevated, but choppy, surf
along east facing beaches through this weekend and into early next
week.

Surf along north facing shores will remain tiny through this
weekend with small pulses of northwest swell possible early next
week.

&&

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


&&

$$


DISCUSSION...Foster
AVIATION...Kino
MARINE...Thomas