NWS Bulletins for NPAC - MKWC
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Hawaiian Islands Synoptic Discussion and Guidance
501
FXHW60 PHFO 161952
AFDHFO
Area Forecast Discussion
National Weather Service Honolulu HI
952 AM HST Tue Apr 16 2024
.SYNOPSIS...
Mostly dry and pleasant conditions will prevail through the week
as high pressure builds to the north. Light to moderate northerly
winds will shift out of a more typical northeast trade wind
direction Wednesday through the second half of the week. As the
trades return, clouds and light showers will favor the typical
windward and mauka locations overnight through the morning hours.
&&
.DISCUSSION...
An area of low pressure centered north of the state will be moving
northeast and further away from the state today. Moisture
continues to linger near the Big Island with precipitable water
values of 1.46 inches on the 12Z Hilo sounding compared to the
0.94 inches on the Lihue sounding. For rest of the day today, we
should see scattered showers over the Big Island, especially
during the afternoon along the slopes. For the rest of the state,
light northerly winds this morning will likely be overtaken by the
sea breezes which should lead to afternoon clouds and some light
showers over leeward areas.
Over on the summits of the Big Island, a High Wind Warning is in
effect due to subtropical jet moving through the area. The jet
should be moving out the area soon and winds should steadily drop
this afternoon.
Starting Wednesday, a ridge of high pressure will build north of
the region and our typical trade winds will make its return.
Bands of moisture is expected to ride in with the trade winds and
passing showers are expected over windward areas through rest of
the week. A slight uptick in moisture is anticipated Wednesday
night into Thursday, which could bring an increase of shower
coverage across the state. Otherwise, fair trade wind weather is
expected through the weekend with trades holding at moderate
speeds.
&&
.AVIATION...
A weak front near the Big Island will shift SE today, with light
northerly flow filling in across the island chain. The winds will
be light enough to allow for daytime sea breezes and overnight
land breezes in many areas. VFR conditions are expected during
the next 24 hours.
AIRMET Sierra remains in effect for mtn obsc across windward
Big Island. Conds should improve by the afternoon.
AIRMET Tango remains in effect for moderate turbulence N through
NE of the mountains on the Big Island. This AIRMET will likely be
cancelled later this morning.
&&
.MARINE...
Remnants of the old front near the Big Island will dissipate and
drift southeast today. Light to moderate northwest to north winds
have filled in behind the front except moderate south to southwest
winds over the far east Big Island waters. Winds look to veer
through the day with light northwest to north winds, before
moderate to fresh northeast winds will fill in by late Wednesday
through Friday.
Surf along north and west facing shores has filled in overnight
as a mixed- period northwest swell continues to build at nearshore
PacIOOS Waimea Buoy, bringing elevated surf to exposed shores. A
Small Craft Advisory for Kauai waters for seas is in effect
through 6 pm HST today. This swell will hold through the day then
gradually diminish as it becomes increasingly north Wednesday.
Otherwise, a combination of southeast and southwest swells will
support small to moderate surf along south facing shores the next
couple of days. Surf along east facing shores will remain very
small, then gradually trend up as the northeast trade winds
increase later in the week.
&&
.HFO WATCHES/WARNINGS/ADVISORIES...
High Wind Warning until 6 PM HST this evening for Big Island
Summits.
Small Craft Advisory until 6 PM HST this evening for Kauai
Northwest Waters-Kauai Windward Waters-Kauai Leeward Waters.
&&
$$
DISCUSSION...Kino
AVIATION...Walsh
MARINE...JVC
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
501
FXHW60 PHFO 161952
AFDHFO
Area Forecast Discussion
National Weather Service Honolulu HI
952 AM HST Tue Apr 16 2024
.SYNOPSIS...
Mostly dry and pleasant conditions will prevail through the week
as high pressure builds to the north. Light to moderate northerly
winds will shift out of a more typical northeast trade wind
direction Wednesday through the second half of the week. As the
trades return, clouds and light showers will favor the typical
windward and mauka locations overnight through the morning hours.
&&
.DISCUSSION...
An area of low pressure centered north of the state will be moving
northeast and further away from the state today. Moisture
continues to linger near the Big Island with precipitable water
values of 1.46 inches on the 12Z Hilo sounding compared to the
0.94 inches on the Lihue sounding. For rest of the day today, we
should see scattered showers over the Big Island, especially
during the afternoon along the slopes. For the rest of the state,
light northerly winds this morning will likely be overtaken by the
sea breezes which should lead to afternoon clouds and some light
showers over leeward areas.
Over on the summits of the Big Island, a High Wind Warning is in
effect due to subtropical jet moving through the area. The jet
should be moving out the area soon and winds should steadily drop
this afternoon.
Starting Wednesday, a ridge of high pressure will build north of
the region and our typical trade winds will make its return.
Bands of moisture is expected to ride in with the trade winds and
passing showers are expected over windward areas through rest of
the week. A slight uptick in moisture is anticipated Wednesday
night into Thursday, which could bring an increase of shower
coverage across the state. Otherwise, fair trade wind weather is
expected through the weekend with trades holding at moderate
speeds.
&&
.AVIATION...
A weak front near the Big Island will shift SE today, with light
northerly flow filling in across the island chain. The winds will
be light enough to allow for daytime sea breezes and overnight
land breezes in many areas. VFR conditions are expected during
the next 24 hours.
AIRMET Sierra remains in effect for mtn obsc across windward
Big Island. Conds should improve by the afternoon.
AIRMET Tango remains in effect for moderate turbulence N through
NE of the mountains on the Big Island. This AIRMET will likely be
cancelled later this morning.
&&
.MARINE...
Remnants of the old front near the Big Island will dissipate and
drift southeast today. Light to moderate northwest to north winds
have filled in behind the front except moderate south to southwest
winds over the far east Big Island waters. Winds look to veer
through the day with light northwest to north winds, before
moderate to fresh northeast winds will fill in by late Wednesday
through Friday.
Surf along north and west facing shores has filled in overnight
as a mixed- period northwest swell continues to build at nearshore
PacIOOS Waimea Buoy, bringing elevated surf to exposed shores. A
Small Craft Advisory for Kauai waters for seas is in effect
through 6 pm HST today. This swell will hold through the day then
gradually diminish as it becomes increasingly north Wednesday.
Otherwise, a combination of southeast and southwest swells will
support small to moderate surf along south facing shores the next
couple of days. Surf along east facing shores will remain very
small, then gradually trend up as the northeast trade winds
increase later in the week.
&&
.HFO WATCHES/WARNINGS/ADVISORIES...
High Wind Warning until 6 PM HST this evening for Big Island
Summits.
Small Craft Advisory until 6 PM HST this evening for Kauai
Northwest Waters-Kauai Windward Waters-Kauai Leeward Waters.
&&
$$
DISCUSSION...Kino
AVIATION...Walsh
MARINE...JVC
Bulletins, Forecasts and Observations are courtesy of Honolulu National Weather Service Forecast Office