A wildfire broke out near South Point on the Big Island.
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The episode as NWS HFO wrote it up.
A wildfire broke out near South Point on the Big Island.
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 Aug 18, 8:38 PM HST, 3 hours 22 minutes earlier.
Area Forecast Discussion National Weather Service Honolulu HI 838 PM HST Fri Aug 18 2023 .SYNOPSIS... Rather dry trade wind weather will prevail through the weekend, with brief showers favoring mainly windward and mauka areas. The trade wind speeds will increase slightly beginning late Sunday and become breezy Monday through Tuesday as the remnant trough of former Tropical Cyclone Fernanda passes by to the south of the state. Deep tropical moisture associated with Fernanda will move into the eastern islands late Sunday night, and spread to the rest of the state Monday and Monday night. Wet weather and locally heavy rainfall can be expected across windward areas, particularly windward Maui and the Big Island, with leeward portions of all islands seeing some rain as well. A drier and more typical trade wind pattern is expected Tuesday night through late next week. && .DISCUSSION... Currently at the surface, a 1033 mb high is centered around 1900 miles north-northeast of Honolulu, while the post-tropical remnant trough of Greg is located around 825 miles south-southwest of Kauai and the post-tropical remnant low of Fernanda is located around 950 miles east of the Big Island. The gradient locally continues to produce moderate to locally breezy trade winds this evening. Infrared satellite imagery shows mostly clear to partly cloudy conditions in most areas, with a bit more cloud cover over portions of leeward Maui and the Big Island. Radar imagery shows isolated to scattered showers moving into windward areas, with a a decaying shower or a few sprinkles reaching leeward areas at times. Main forecast focus continues to revolve around the potential for some heavier rainfall associated with the remnants of Fernanda early next week. Moderate trade winds will hold in place through the weekend, with a slight increase expected late Sunday as the remnant trough of former Tropical Cyclone Fernanda approaches from the east. The trades will strengthen to breezy levels Monday and Tuesday as the remnant trough of Fernanda slides by to the south of the state, then hold at breezy levels through late next week as strong high pressure builds to the distant north-northeast. As for the remaining weather details, very little change to the overall weather forecast is expected during the next couple days, with rather dry trade wind weather prevailing. There will be some light showers affecting windward and mauka areas, particularly at night and during the early morning hours each day, with mostly dry conditions persisting in leeward locales. The persistent dry pattern we've been experiencing for quite some time appears to come to an abrupt halt beginning late Sunday night over the eastern end of the state as deep tropical moisture associated with the remnant trough of Fernanda moves in. The deep tropical moisture will spread westward across the state Monday and Monday night. Periods of wet weather with locally heavy rainfall can be expected in windward areas as the remnants of Fernanda move through, and even leeward communities will see some rainfall, although the rain shadowing effects of the terrain should limit rainfall totals here. The deepest moisture and highest chances for heavy rainfall appear to be over windward sections of the Big Island and perhaps windward Maui at this time. Drier conditions are forecast to move in from east to west across the island chain on Tuesday, with typical trade wind weather featuring brief windward and mauka showers and the occasional leeward spillover then prevailing Tuesday night through late next week. && .AVIATION... Mostly dry conditions, with scattered clouds favoring north through east sections of the islands, will persist through the next several days. Cloud cover that formed along the Kona slopes of the Big Island this afternoon should diminish overnight. Although a diurnal increase in shower activity is possible tonight through early Saturday across windward locations, VFR conditions will prevail through the forecast period for most locations. Moderate trade winds will continue through Sunday. There are currently no AIRMETs, and none are anticipated at this time. && .MARINE... Surface high pressure moving far north and northeast of the islands will result in moderate to locally fresh trade winds through Sunday. As what is left of once Tropical Cyclone Fernanda passes south of the islands Monday, the pressure gradient created between her and high pressure to the north will restrengthen trades to generally fresh to locally strong magnitudes through the remainder of next week. This will likely prompt Small Craft Advisories for the typical windier waters around Maui County and Big Island. A small northwest swell will keep north shore surf just above typical summertime flat levels through this evening, then slowly fade out this weekend. South shore surf will remain small through Saturday with a small, medium period swell arriving early next week. East-facing shore surf will remain below normal through the weekend due to lighter trades upstream of the state. Short period east wind wave swell generated by remnants of Fernanda, along with long period east swell generated from Hurricane Hilary just southwest of the southern tip of Baja California Sur tonight, will likely impact eastern exposures from Monday night through Wednesday. East-facing shore surf heights will likely peak out just below surf advisory thresholds Tuesday night into Wednesday morning due to this triple shot of locally-generated trade wind wave swell and swells from both Fernanda and Hilary. && .HFO WATCHES/WARNINGS/ADVISORIES... None. && DISCUSSION...Jelsema AVIATION...Powell MARINE...Blood
The national radar mosaic for the moment the first event began.
1 wildfire. Local standard time, as filed.
A brush fire was reported near South Point on the Big Island.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Hawaii in 2023Every state in 2023This day in weather historyWarnings in Hawaii, August 2023
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: 1122365.