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000
FXHW60 PHFO 230652
AFDHFO

Area Forecast Discussion
National Weather Service Honolulu HI
852 PM HST Mon Apr 22 2024

.SYNOPSIS...
Breezy and showery trade wind conditions will prevail through the
week, 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 through the week and depicts
mostly benign conditions persisting with the subtropical ridge
remaining in place to the north. Moderate to breezy northeast
trades will shift out of the east overnight through Tuesday as a
band of moisture settles southward into the area. This band of
moisture will linger in the area Tuesday, then slowly diminish
through midweek. This will support showery conditions for windward
and mountain areas, with some showers making it over to our
leeward sections of the smaller islands overnight through morning
periods. Accumulations over windward/mauka locations could reach
the 1-2 inch range over the next couple of days as steady, mostly
light, showers continue to develop and move through.

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

&&

.AVIATION...
A healthy band of clouds moving in will bring a higher
probability of MVFR cigs/vsbys and SHRA over windward and mauka
areas this evening.

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 several days, resulting in fresh to
strong trade winds over the islands. A Small Craft Advisory
remains in effect for higher winds through Tuesday night 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 AM 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