Hawaii, 2023

Wildfire in Hawaii, September 24, 2023

September 24, 2023 · NWS HFO · 1 event in 1 county or zone

A brushfire started near Dillingham airfield around 2 pm and burned approximately 30 acres.

Where it happened

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS HFO wrote it up.

A brushfire started near Dillingham airfield around 2 pm and burned approximately 30 acres.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Honolulu, HI wrote its last area forecast discussion before the first event at Sep 24, 9:34 AM HST, 4 hours 26 minutes earlier.

Area forecast discussion, Sep 24, 9:34 AM HST, 4 hours 26 minutes before
Area Forecast Discussion
National Weather Service Honolulu HI
934 AM HST Sun Sep 24 2023

.SYNOPSIS...
High pressure far northwest of the islands will keep moderate to
breezy trade winds in place through late next week, with only
minor fluctuations in strength. Fairly typical trade wind weather
will prevail, with showers favoring windward and mauka areas and a
stray shower reaching leeward communities at times.

&&

.DISCUSSION...
A 1028 mb surface high is located far northwest of Hawaii this
morning driving moderate to breezy trade winds across the state.
Visible satellite and radar show low clouds and isolated showers
carried in by the by the trade winds over the windward slopes and
waters this morning. 12Z soundings show a fairly typical 8 kft
inversion over the islands and precipitable water values of 1.2
inches at Lihue to 1.4 inches at Hilo. MIMIC total precipitable
waters shows a large swath of relatively dry air (PW 1.1 to 1.2
inches moving in from upstream) which will likely limit shower
activity over the next few days. Model guidance suggests the best
chance will be over the windward sides of Big Island and Maui
during the nighttime and early morning hours, but elsewhere
conditions will be mostly dry.

Trade winds speeds will weaken slightly around Monday as a front
to the north of the islands moves closer and then weakens. High
pressure filling in behind this feature will again boost winds
speeds back to current levels from Tuesday to the end of the week.
Windward and mauka showers may also increase beginning around
Tuesday night as moisture funnels in with a breezier trades.

&&

.AVIATION...
High pressure far north-northwest of the island chain will
continue to produce moderate to locally breezy trade winds today.
Although trades may ease slightly on Monday, locally breezy
speeds will be maintained. AIRMET Tango for moderate low level
turbulence remains in effect over and south through west of all
island mountains. This AIRMET will likely continue through the
forecast period.

Latest satellite and radar imagery this morning shows scattered
clouds and showers embedded within the trades moving into north
through east sections of the islands, particularly over the
eastern end of the state. Clouds and showers have diminished a bit
over the western islands over the past few hours, so AIRMET
Sierra for tempo mountain obscuration has been cancelled for
Kauai, Oahu, and Molokai, but remains in effect for windward
sections of Maui and the Big Island. Expect decreasing windward
shower trends through the rest of the morning, becoming more
isolated this afternoon. In addition, cloud buildups and a few
showers will also be possible over the Kona slopes of the Big
Island from late this morning through early evening. Regardless,
VFR flight conditions are expected to prevail at most locations,
though occasional MVFR ceilings and visibilities cannot be ruled
out within any passing showers that occur.

&&

.MARINE...
A surface high pressure system located far northwest of the state
will maintain locally strong trade winds early this week. As a
result, the Small Craft Advisory (SCA) has been extended through
Tuesday night for the typically windier waters adjacent to the
islands of Maui County and the Big Island. The latest forecast
indicates the trade winds should remain locally strong throughout
the week. Therefore, the SCA will eventually need to be extended
for the same typically windier waters in the vicinity of the
eastern islands. Note that SCA conditions may develop over
additional waters by mid-week as high pressure builds far north of
the state, and the trade winds strengthen slightly.

The current small, long-period southwest (210 degrees) swell will
continue to spread over the area today. This southwest swell
energy combined with a lingering southeast trade wind swell will
likely maintain small surf along south facing shores early this
week. Mainly background energy is expected by the middle of the
week. A small southeast swell is possible next weekend.

The nearshore buoys exposed to the small north-northwest (330
degrees) swell are showing a wave height of around 2 feet and a
wave period near 11 seconds. This swell will produce a small bump
in surf heights along along exposed north and west facing shores
through early Monday. In addition, a small north (350-360
degrees) swell may arrive around Tuesday, followed by a modest
north-northeast (020 degrees) swell from Thursday through Friday.

Moderate, rough surf will likely persist along east facing shores
this morning. The surf may lower slightly along east facing
shores from later today and tonight into Tuesday due to a subtle
weakening of the trade winds. Moderate, rough surf may return
along east facing shores by mid-week due to strengthening of the
trade winds.

&&

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

&&

DISCUSSION...Foster
AVIATION...Vaughan
MARINE...Kino

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

1 wildfire. Local standard time, as filed.

Wildfire, Oahu North Shore

When
September 24, 2:00 PM HST to 8:00 PM HST
Where
Oahu North Shore forecast zone
Reported by
Fire Department/Rescue
Coordinates
21.455, -157.961 (the zone’s center; the record gives no point)

A brush fire near Dillingham airfield burned approximately 30 acres of land. There were no reports of damage or injuries.

What these are

Wildfire
A fire burning in wildland vegetation, with its acreage and damage where known.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Hawaii in 2023Every state in 2023This day in weather historyWarnings in Hawaii, September 2023

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1130882.