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 30, 8:38 PM HST, 3 hours 22 minutes earlier.
Area Forecast Discussion National Weather Service Honolulu HI 838 PM HST Wed Aug 30 2023 .SYNOPSIS... Breezy to locally windy trades will persist through Thursday with mostly dry conditions. The trades will ease slightly Thursday night with a few more showers expected as some moisture works in from the east. Moderate to locally breezy trade winds are then expected Friday through Saturday, with fairly typical trade wind weather with showers favoring windward slopes and coasts expected through early Saturday, before drier conditions build back in by Saturday afternoon. Rather dry trade wind weather is then expected to continue through Sunday, with the trades gradually easing to moderate levels. Light and variable winds are expected early next week, with land and sea breezes common statewide. A disturbance aloft could bring an increase in showers and potentially a few downpours to the smaller islands early next week as well, while the Big Island should remain mostly dry. && .DISCUSSION... Currently at the surface, a 1031 high is centered around 1300 miles northeast of Honolulu, and is driving breezy trade winds across the island chain this evening. Meanwhile, the remnant low of former tropical cyclone Irwin is located around 1250 miles east of Hilo, and another broad area of low pressure is embedded in the ITCZ around 900 miles south of the Big Island. Infrared satellite imagery shows partly to mostly cloudy conditions across windward areas, and mostly clear to partly cloudy skies in most leeward locales. Radar imagery shows a few showers moving into windward areas, with a decaying shower or sprinkles reaching leeward communities from time to time. Main short term focus revolves around Wind and Fire Weather headlines. High pressure northeast of the state will continue to drive breezy to locally windy trades through Thursday, with the trades easing Thursday night as the high shifts further north. A Wind Advisory remains in effect for much of Maui County and the Big Island through 6 PM Thursday. Moderate to locally breezy conditions will then hold in place Friday and Saturday, with the trades easing moderate levels Sunday as broad troughing develops north of the islands. The trough will hold in place north of the islands early next week, with light and variable winds expected to result in a land/sea breeze pattern statewide. The trades could begin to return around the middle of next week as the troughing north of the islands begins to break down. As for the remaining weather details, drier and more stable conditions with precipitable water values at or below 1 inch are moving into eastern islands this evening, and will spread westward to the remaining islands overnight into early Thursday morning. Rather dry trade wind weather will prevail with showers limited mainly to windward slopes and coasts, and a few decaying showers or sprinkles reaching leeward communities at times. Dry trade wind weather is expected statewide on Thursday as inversion heights lower to around 5-6 kft, with nothing more than isolated showers affecting windward areas. Moisture appears to increase a bit from east to west across the state Thursday night, so a return to more typical trade wind weather is expected, which should hold in place through Friday night. Drier trade wind weather is then expected to build back over the islands Saturday and Sunday, with limited showers affecting mainly windward/mauka locales. A mid/upper level trough pivoting southward just to the north of the western islands Sunday night through Tuesday, may bring a better shot for rainfall to both windward and leeward sections of the smaller islands, particularly Kauai and Oahu. The added instability along with sea breezes could result in a few downpours as well. Meanwhile drier conditions should prevail over the Big Island as the deeper moisture doesn't appear to make it this far south. The deeper moisture and forcing from the upper low appears to lift north of the island chain next Wednesday, with rather dry conditions expected to return. However, some deeper moisture with a connection to the tropics may pivot far enough northward to increase rain chances over the Big Island next Wednesday. && .AVIATION... A robust area of surface high pressure positioned north of the state will help generate breezy tradewinds through the forecast period. Some low level moisture caught up in the flow will bring scattered showers to the windward locations tonight. However, by Thursday morning, drier air is expected to filter in from east and lead to much drier conditions with partly cloudy skies. AIRMET Tango remains in effect for low level turbulence over and downwind of the terrain across all islands. This AIRMET will likely continue through Thursday. && .MARINE... Surface high pressure northeast of the state drifts slowly west resulting in fresh to strong easterly trades for all Hawaiian waters through Thursday night. Winds are expected to ease slightly Friday through Saturday as the ridge begins to weaken and a broad trough approaches from the east. Guidance continues to advertise light to gentle east-southeast winds Sunday night through early next week as the trough moves closer to the area. Small Craft Advisory conditions has been expanded to include all waters through Thursday night. Seas will respond and become rough, with some of the windier channels and waters exceeding the 10 ft advisory level Thursday. Surf along east facing shores will continue through the second half of the week as the trades remain strong. Additionally, expect some groundswell mixed in with 9-10 second periods for the upcoming weekend from former Tropical Cyclone Irwin tracking westward across the eastern Pacific. Surf heights should stay below the 10 ft (faces) High Surf Advisory (HSA) criteria through the peak of this event Thursday through Saturday. A downward trend is expected Sunday into early next week as the trades weaken. Surf along south facing shores will remain small through the weekend as overlapping background level long-period southerly pulses move through. For the extended, guidance is advertising a south swell arriving next week (Monday night through midweek) originating from an area of gales east of New Zealand. Expect a late season event with heights potentially nearing the HSA level during the peak late Tuesday through Wednesday. Surf along exposed north and west facing shores will trend up again this weekend as a small west-northwest (300-310 degree) swell arrives. This will be in response to a storm-force low (former TC Damrey) racing eastward toward the Date Line from Japan over the past couple of days. && .FIRE WEATHER... The combination of dry fuels, strong and gusty winds and low humidity levels will result in high fire danger and an the risk for extreme fire behavior. The lowest humidity levels and strongest winds are expected from mid morning Thursday through late Thursday afternoon. During this time, any fires that start will likely spread rapidly and be very difficult to control. Outdoor burning should be avoided altogether until these critical conditions end. It is important to note that the winds for this event WILL NOT be comparable in strength to the August 8, 2023 event, where wind gusts of well over 60 mph were observed. The latest forecast for Thursday is for trade winds of 15 to 30 mph with gusts of 40 to 50 mph, with the strongest wind gusts expected downwind / leeward of the higher terrain on the islands of Maui County and the Big Island. && .HFO WATCHES/WARNINGS/ADVISORIES... Red Flag Warning until 6 PM HST Thursday for Kauai Leeward-Oahu South Shore-Waianae Coast-Oahu North Shore-Olomana-Central Oahu- Waianae Mountains-Molokai Leeward-Lanai Makai-Lanai Mauka-Maui Leeward West-Maui Central Valley-Leeward Haleakala-Kona-South Big Island-Kohala-Big Island Interior. Wind Advisory until 6 PM HST Thursday for Lanai Mauka-Kahoolawe- Maui Leeward West-Kohala-Molokai Leeward South-Lanai Windward- Lanai Leeward-Maui Central Valley North-Maui Central Valley South-South Haleakala-Big Island Southeast-Big Island North. Small Craft Advisory until 6 AM HST Friday for all Hawaiian waters- && DISCUSSION...Jelsema AVIATION...Thomas MARINE...Shigesato
The national radar mosaic for the moment the first event began.
1 wildfire. Local standard time, as filed.
A wildfire broke out 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: 1122366.