NWS Bulletins for NPAC - MKWC
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Hawaiian Islands Synoptic Discussion and Guidance
552
FXHW60 PHFO 131326
AFDHFO
Area Forecast Discussion
National Weather Service Honolulu HI
326 AM HST Fri Sep 13 2024
.SYNOPSIS...
Gradually strengthening trade winds will become locally breezy by
the weekend, delivering just a few showers, mainly to windward
areas.
&&
.DISCUSSION...
Persistent troughing far N of the islands will continue to gradually
diminish, allowing a pair of surface high pressure centers to
consolidate over the weekend. End result will be strengthening trade
winds, becoming locally breezy later today into Saturday, then
persisting into the middle of next week. Atmospheric stability will
remain high, so any showers arriving on the trades will be brief,
and favor windward areas during nights and mornings. Moisture
associated with a weak tropical disturbance passing far S of the
islands may bring increased showers Sunday night and Monday, mainly
to the Big Island.
&&
.AVIATION...
Moderate to locally breezy trades expected through the weekend.
Low cigs and SHRA should be confined to windward and mauka
locations. Brief MVFR conds can be expected in SHRA. VFR conds
should generally prevail.
No AIRMETs currently in effect.
&&
.MARINE...
Moderate to locally strong winds will fill in today then persist
into the weekend as a broad high develops over much of the
central and eastern half of the Pacific. A Small Craft Advisory
(SCA) for the typically windy waters around Maui County and the
Big Island has been issued through the weekend. The high pressure
will meander just north-northeast of the state through the first
half of next week that may keep SCA conditions in place through
this time.
Tiny surf along north facing shores will linger through today as
a short period north swell fades. Mostly flat conditions will
return tonight then hold through the first half of next week.
Surf along east facing shores will gradually become rough and
choppy today. Near seasonal average surf will return for east
facing shores over the weekend and persist through the first half
of next week as trades build locally and upstream. A mix of
background southwest and southeast swells will produce small surf
for south facing shores over the next few days. No signs of any
forerunners from a new small, long period south-southwest swell
at the offshore buoys early this morning. Thus, have delayed the
onset to later this afternoon and evening. This new swell should
refresh some small surf along south facing shores over the weekend
with a gradual downtrend early next week.
&&
.HFO WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
DISCUSSION...Birchard
AVIATION...Walsh
MARINE...Almanza
Bulletins, Forecasts and Observations are courtesy of Honolulu National Weather Service Forecast Office
Narrow the Menu List
Select Time Limit: 12 hours | 24 hours | 48 hours | 72 hours | No time limit
Select Product Type: All | Routine Bulletins/FCSTS | Warnings/Watches/Advisories | HAWN Weather | Tropical | Marine | Aviation | Daily Obs | Special
Hawaiian Islands Synoptic Discussion and Guidance
552
FXHW60 PHFO 131326
AFDHFO
Area Forecast Discussion
National Weather Service Honolulu HI
326 AM HST Fri Sep 13 2024
.SYNOPSIS...
Gradually strengthening trade winds will become locally breezy by
the weekend, delivering just a few showers, mainly to windward
areas.
&&
.DISCUSSION...
Persistent troughing far N of the islands will continue to gradually
diminish, allowing a pair of surface high pressure centers to
consolidate over the weekend. End result will be strengthening trade
winds, becoming locally breezy later today into Saturday, then
persisting into the middle of next week. Atmospheric stability will
remain high, so any showers arriving on the trades will be brief,
and favor windward areas during nights and mornings. Moisture
associated with a weak tropical disturbance passing far S of the
islands may bring increased showers Sunday night and Monday, mainly
to the Big Island.
&&
.AVIATION...
Moderate to locally breezy trades expected through the weekend.
Low cigs and SHRA should be confined to windward and mauka
locations. Brief MVFR conds can be expected in SHRA. VFR conds
should generally prevail.
No AIRMETs currently in effect.
&&
.MARINE...
Moderate to locally strong winds will fill in today then persist
into the weekend as a broad high develops over much of the
central and eastern half of the Pacific. A Small Craft Advisory
(SCA) for the typically windy waters around Maui County and the
Big Island has been issued through the weekend. The high pressure
will meander just north-northeast of the state through the first
half of next week that may keep SCA conditions in place through
this time.
Tiny surf along north facing shores will linger through today as
a short period north swell fades. Mostly flat conditions will
return tonight then hold through the first half of next week.
Surf along east facing shores will gradually become rough and
choppy today. Near seasonal average surf will return for east
facing shores over the weekend and persist through the first half
of next week as trades build locally and upstream. A mix of
background southwest and southeast swells will produce small surf
for south facing shores over the next few days. No signs of any
forerunners from a new small, long period south-southwest swell
at the offshore buoys early this morning. Thus, have delayed the
onset to later this afternoon and evening. This new swell should
refresh some small surf along south facing shores over the weekend
with a gradual downtrend early next week.
&&
.HFO WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
DISCUSSION...Birchard
AVIATION...Walsh
MARINE...Almanza
Bulletins, Forecasts and Observations are courtesy of Honolulu National Weather Service Forecast Office