Hickam Housing, Hawaii 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

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FXHW60 PHFO 080134
AFDHFO

Area Forecast Discussion
National Weather Service Honolulu HI
334 PM HST Mon Apr 7 2025

.SYNOPSIS...
Breezy trade winds will persist through the week, with clouds and
showers favoring windward and mauka areas overnight and during
the morning hours. A band of moisture associated with a remnant
front drifting south over the islands, along with a developing
upper-level trough later in the week, will lead to periods of
enhanced windward showers from tonight through the second half of
the week.

&&

.DISCUSSION...

Short-term guidance remains in good agreement, indicating a
weakness forming in the surface ridge through Tuesday night as a
cold front passes well north of the islands. This will lead to the
pressure gradient relaxing slightly, causing breezy trade winds
to ease into the moderate to locally breezy range tonight through
Tuesday. While showers will remain limited today, coverage may
increase from tonight through Tuesday night as a shallow band of
moisture moves into the area. Given the shallow nature of this
boundary, rainfall totals should be light, with little reaching
leeward areas, especially as trades weaken.

Wednesday through the end of the week, guidance shows the surface
ridge restrengthening as a 1035 mb high builds to the north. This
will lead to the return of breezy northeast trade winds across
most of the state, particularly over the western end, where the
remnant boundary may continue to linger. Windward areas can expect
periodic showers, driven by this lingering shallow moisture and
an evolving broad upper trough over the region.

&&

.AVIATION...

Locally strong trades persist through tonight then slightly weaken
on Tuesday. Clouds and showers favor windward and mauaka where
isolated pockets of MVFR can be expected, especially as a remannt
front drifts south over the islands tonight into tomorrow. Periods
of MVFR, or even brief IFR, expected in heavier showers.
Otherwise, VFR prevails.

AIRMET Tango remains in effect for low level turb aob 8kft.

&&

.MARINE...

A strong ridge of high pressure north of the state will continue
to drive fresh to strong trade winds through tonight. The ridge will
briefly weaken on Tuesday, then strengthen north of the islands
by late Wednesday. The current large north swell will steadily
decline through Wednesday. Small Craft Advisory (SCA) conditions
are expected across all Hawaiian waters through tonight and will
be at borderline levels on Tuesday. Winds and seas should drop
below advisory thresholds by late Tuesday.

Due to the current large northerly swell (340-360 degrees),
moderate to heavy harbor surges are anticipated to continue in
north facing harbors through tonight. A marine weather statement
remains posted for this hazard, and this statement will continue
through the tonight time period.

The current large north swell will continue to decrease tonight
and tomorrow, with advisory level surf affecting most north, east
and west facing shores through tonight. A High Surf Advisory
remains in effect for these affected areas. The latest nearshore
and offshore buoy observations continue to show a gradual decline
in swell heights this afternoon and it remains fairly in line
with ECMWF wave guidance. Surf heights will likely drop below
advisory levels along north, east and west facing shores by
Tuesday. A small medium period swell may slightly boost north and
west shore surf late Thursday into Friday, with small surf heights
expected for next weekend.

The current long-period south-southwest swell continue to fill in
this afternoon and will peak on Tuesday near or slightly above
the summer average. This swell should be on its downward trend on
Wednesday and surf should return to small mostly background levels
from Friday into the weekend.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
High Surf Advisory until 6 AM HST Tuesday for Niihau-Kauai
Leeward-Waianae Coast-Oahu North Shore-Olomana-Maui Windward
West-Maui Leeward West-Kauai North-Kauai East-Koolau Windward-
Molokai Windward-Molokai North-Molokai West-Maui Central Valley
North-Windward Haleakala-Big Island East-Big Island North.

Small Craft Advisory until 6 AM HST Tuesday for all Hawaiian
waters-


&&

$$


DISCUSSION...JVC
AVIATION...JVC
MARINE...Kino