NWS Bulletins for NPAC - MKWC
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Hawaiian Islands Synoptic Discussion and Guidance
639
FXHW60 PHFO 101302
AFDHFO
Area Forecast Discussion
National Weather Service Honolulu HI
302 AM HST Sat Jun 10 2023
.SYNOPSIS...
High pressure north of the islands will keep moderate to breezy
trade winds in place through the middle of next week, with only
minor fluctuations in strength from day to day. Rather dry trade
wind weather will prevail through the weekend, with light showers
favoring windward and mauka areas. A disturbance aloft will begin
to influence the weather Sunday night through late next week,
bringing an increase in trade wind showers to the island chain.
Some old frontal remnants could bring periods of wet weather as
they move through during the early to middle part of next week.
&&
.DISCUSSION...
Currently at the surface, a 1027 mb high is centered around 1350
miles northeast of Honolulu, and is driving moderate to locally
breezy trade winds across the island chain early this morning.
Infrared satellite imagery shows scattered high clouds moving
overhead across the islands and some low clouds getting carried
along with the trades. Partly cloudy conditions prevail in most
areas, with a bit more cloud cover in some windward areas. Radar
imagery shows scattered showers moving into windward areas, with
a few showers spilling into leeward areas at times. Main short
term focus revolves around rain chances.
High pressure will remain anchored to the northeast of the island
chain through the middle of next week, keeping moderate to breezy
trade winds in place with only minor fluctuations in strength
from day to day. The trades may ease a bit late next week as the
high weakens slightly.
As for the remaining weather details, rather dry and stable
trade wind weather will continue through the weekend, with light
showers favoring windward and mauka areas, mainly during nights
and mornings. Ridging aloft is forecast to break down Sunday night
and Monday, with a disturbance aloft then holding over or near
the islands Tuesday through Friday. This should bring an increase
in trade wind showers to the islands beginning Sunday night, with
some old frontal remnants potentially bringing periods of wet
weather as they move through during the early to middle part of
next week.
&&
.AVIATION...
A high pressure ridge north of the Hawaii region will keep
moderate to breezy trade winds in the forecast at least through
Sunday. Stable conditions will allow for brief showers mainly over
the north and east sections of each island, favoring the
overnight to early morning hours.
AIRMET Tango remains in effect for moderate low-level turbulence
downwind of terrain of most islands. This AIRMET will likely
remain in effect for the next several days.
&&
.MARINE...
Moderate to strong easterly trades will continue through most of
next week as a surface ridge remains anchored north of the
islands. A Small Craft Advisory (SCA) is in effect for the windier
waters and channels from Molokai to the Big Island. The SCA will
likely be extended through next week, and trade winds may increase
slightly late Monday into Wednesday. A downward trend is possible
late next week as the ridge settles southward into the area.
An out of season west-northwest swell will maintain surf just
above June average along exposed north and west facing shores
today. This swell will move out Sunday and Monday with little to
no northwest swell energy noted by the middle of next week. In
the extended, Typhoon Guchol will likely become extratropical in
the northwest Pacific during the middle of next week and may send
a larger northwest swell to Hawaii next weekend.
Surf along east facing shores will gradually build through early
next week with the fresh trades in place, especially Tuesday
through Wednesday as a short-period northeast groundswell mixes
in.
Surf along south facing shores will remain small each day as a
mix of long-period background south and southwest (170-220 degree)
swells move through.
&&
.HFO WATCHES/WARNINGS/ADVISORIES...
Small Craft Advisory until 6 PM HST Monday for Maalaea Bay-
Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big
Island Southeast Waters.
&&
$$
DISCUSSION...Jelsema
AVIATION...Bohlin
MARINE...Gibbs
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
639
FXHW60 PHFO 101302
AFDHFO
Area Forecast Discussion
National Weather Service Honolulu HI
302 AM HST Sat Jun 10 2023
.SYNOPSIS...
High pressure north of the islands will keep moderate to breezy
trade winds in place through the middle of next week, with only
minor fluctuations in strength from day to day. Rather dry trade
wind weather will prevail through the weekend, with light showers
favoring windward and mauka areas. A disturbance aloft will begin
to influence the weather Sunday night through late next week,
bringing an increase in trade wind showers to the island chain.
Some old frontal remnants could bring periods of wet weather as
they move through during the early to middle part of next week.
&&
.DISCUSSION...
Currently at the surface, a 1027 mb high is centered around 1350
miles northeast of Honolulu, and is driving moderate to locally
breezy trade winds across the island chain early this morning.
Infrared satellite imagery shows scattered high clouds moving
overhead across the islands and some low clouds getting carried
along with the trades. Partly cloudy conditions prevail in most
areas, with a bit more cloud cover in some windward areas. Radar
imagery shows scattered showers moving into windward areas, with
a few showers spilling into leeward areas at times. Main short
term focus revolves around rain chances.
High pressure will remain anchored to the northeast of the island
chain through the middle of next week, keeping moderate to breezy
trade winds in place with only minor fluctuations in strength
from day to day. The trades may ease a bit late next week as the
high weakens slightly.
As for the remaining weather details, rather dry and stable
trade wind weather will continue through the weekend, with light
showers favoring windward and mauka areas, mainly during nights
and mornings. Ridging aloft is forecast to break down Sunday night
and Monday, with a disturbance aloft then holding over or near
the islands Tuesday through Friday. This should bring an increase
in trade wind showers to the islands beginning Sunday night, with
some old frontal remnants potentially bringing periods of wet
weather as they move through during the early to middle part of
next week.
&&
.AVIATION...
A high pressure ridge north of the Hawaii region will keep
moderate to breezy trade winds in the forecast at least through
Sunday. Stable conditions will allow for brief showers mainly over
the north and east sections of each island, favoring the
overnight to early morning hours.
AIRMET Tango remains in effect for moderate low-level turbulence
downwind of terrain of most islands. This AIRMET will likely
remain in effect for the next several days.
&&
.MARINE...
Moderate to strong easterly trades will continue through most of
next week as a surface ridge remains anchored north of the
islands. A Small Craft Advisory (SCA) is in effect for the windier
waters and channels from Molokai to the Big Island. The SCA will
likely be extended through next week, and trade winds may increase
slightly late Monday into Wednesday. A downward trend is possible
late next week as the ridge settles southward into the area.
An out of season west-northwest swell will maintain surf just
above June average along exposed north and west facing shores
today. This swell will move out Sunday and Monday with little to
no northwest swell energy noted by the middle of next week. In
the extended, Typhoon Guchol will likely become extratropical in
the northwest Pacific during the middle of next week and may send
a larger northwest swell to Hawaii next weekend.
Surf along east facing shores will gradually build through early
next week with the fresh trades in place, especially Tuesday
through Wednesday as a short-period northeast groundswell mixes
in.
Surf along south facing shores will remain small each day as a
mix of long-period background south and southwest (170-220 degree)
swells move through.
&&
.HFO WATCHES/WARNINGS/ADVISORIES...
Small Craft Advisory until 6 PM HST Monday for Maalaea Bay-
Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big
Island Southeast Waters.
&&
$$
DISCUSSION...Jelsema
AVIATION...Bohlin
MARINE...Gibbs
Bulletins, Forecasts and Observations are courtesy of Honolulu National Weather Service Forecast Office