000
FXHW60 PHFO 221317
AFDHFO

Area Forecast Discussion
National Weather Service Honolulu HI
317 AM HST Mon Apr 22 2024

.SYNOPSIS...
Moderate to breezy northeast to east trade winds will prevail
through the week, with clouds and showers favoring windward and
mauka locations overnight through the morning periods as areas of
moisture move through. The trade winds may ease slightly next
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 continue today, then shift out of the east tonight
through Tuesday as a residual band of moisture settles southward
into the area. This band of moisture will stall in the area and
slowly diminish through midweek. This will support increasing
windward shower coverage, with some showers making it over to our
leeward sections of the smaller islands.

The breezy 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...
Moderate to breezy trade winds will prevail during the next
few days as a surface high builds north of the islands. SHRA and
some MVFR conds are possible for windward and mauka locations. VFR
conds will prevail over leeward areas.

AIRMET Sierra is in effect for mtn obsc for windward Big Island.
This may need canceled as conds improve this morning.

AIRMET Tango in effect for mod turb for all islands.

&&

.MARINE...
High pressure north of the state will slowly drift east and
strengthen over the next several days, resulting in strengthening
trade winds over the Hawaii region. A Small Craft Advisory remains
in effect through Tuesday for the typical windier waters around
Maui and the Big Island.

Surf heights along all shores will remain below advisory thresholds
through the end of this week. A moderate, medium period north
swell will decrease today before another medium period northwest
swell builds into the region from late Wednesday into Thursday.
Surf along east facing shores will rise and become choppy as trade
winds strengthen. South facing shores will continue to see small
background swell pulses through the week.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
Small Craft Advisory until 6 PM HST Tuesday for Maalaea Bay-
Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big
Island Southeast Waters.

&&
$$

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