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000
FXHW60 PHFO 231300
AFDHFO

Area Forecast Discussion
National Weather Service Honolulu HI
300 AM HST Tue Apr 23 2024

.SYNOPSIS...
Breezy and showery trade wind conditions will continue through
Thursday, with clouds and showers favoring windward and mauka
locations. Trade winds may ease slightly this weekend as the ridge
weakens to the north.

&&

.DISCUSSION...
Guidance remains in good agreement and depicts the wet trade wind
pattern persisting through Thursday as bands of low-level
moisture move through. The initial band that has moved in
overnight has led to an increase in windward shower coverage,
with some spilling over into leeward sections of the smaller
islands. Observations at the gauges reflect this uptick in
showers with accumulations reaching a quarter to three quarters
of an inch with localized higher amounts above two inches over
the past six hours. Expect this showery trend to persist through
midweek, with the next band approaching from the northeast. The
shower coverage should trend down by Friday as this second band
moves out and some drier air moves in.

The breezy easterly trades may ease slightly next weekend as the
ridge weakens to the north in response to deep low pressure
developing far northwest of the state near Midway.

&&

.AVIATION...
Bands of clouds will bring a MVFR cigs/vsbys and SHRA over
windward and mauka areas this morning. A few SHRA will make it to
leeward sides with lowering cigs/vsbys as well.

AIRMET Sierra is in effect for mtn obsc for all islands.

AIRMET Tango is also in effect for moderate turb below 080 for S
and W of all islands.

&&

.MARINE...
High pressure north of the state will slowly drift east and
strengthen over the next few days, resulting in fresh to strong
trade winds over the islands. A Small Craft Advisory remains in
effect for higher winds through Wednesday covering most Hawaiian
coastal waters from Oahu to Big Island.

Surf heights along all shores will remain below advisory thresholds
through the weekend. A small, medium period northwest swell
will arrive late Wednesday and continue through Saturday. Choppy,
rough surf expected all week along east facing shores due to the
trade winds. South facing shores will continue to see small
background swell pulses through rest of the the week.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
Small Craft Advisory until 6 PM HST Wednesday for Oahu Leeward
Waters-Kaiwi Channel-Maui County Windward Waters-Maalaea Bay-
Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big
Island Southeast Waters.

&&
$$

DISCUSSION...Gibbs
AVIATION...Walsh
MARINE...Bohlin