Portions of Piilani Highway were closed due to a brushfire.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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.
The episode as NWS HFO wrote it up.
Portions of Piilani Highway were closed due to a brushfire.
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 Jul 4, 3:55 PM HST, 4 hours 5 minutes earlier.
Area Forecast Discussion National Weather Service Honolulu HI 355 PM HST Tue Jul 4 2023 .SYNOPSIS... For the next several days, moderate to locally breezy trade winds will focus low clouds and isolated to scattered light showers over windward and mauka areas, especially during night and morning hours. Leeward communities will be mostly dry, but afternoon clouds and a few showers will develop across leeward shores and slopes of the Big Island. && .DISCUSSION... This afternoon, surface high pressure remains located over 1400 miles northeast of Honolulu, which is driving moderate to breezy trade winds across the state. In the mid-levels, a 500mb ridge is located near the eastern end of the state. Afternoon 00z soundings at Lihue and Hilo continue to show strong inversions between 4,000 and 6,000 feet, with an additional shallow moist layer near 25,000 feet noted in the Hilo sounding, indicative of a few high clouds around the eastern end of the state. Latest satellite imagery shows patchy clouds with a few light showers embedded within the trades moving into windward areas, but the overall weather regime remains dry with very little rainfall observed at gauges across the state today. With this afternoon's forecast updates, only minor changes have been made but the overall forecast philosophy remains the same. The surface high well north of the islands will persist throughout the rest of the week. This will keep trade winds in the moderate to locally breezy range with only minor day-to-day fluctuations. Models show our airmass will remain stable as the mid-level ridge southeast of the Big Island builds north over the island chain, keeping a low and strong subsidence inversion in place. This should cap cloud development and keep showers on the lighter side for the most part. However, occasional bands of clouds embedded within the trade flow will generate a few more light showers across windward areas from time to time while most leeward areas remain dry. Additionally, typical cloud buildups and isolated showers can be expected across the Kona Coast of the Big Island each afternoon, but these clouds and showers will diminish during the overnight hours each night. Trade wind showers may increase late Sunday into early Monday over the eastern end of the state as remnant moisture associated with former Hurricane Adrian approaches the area. && .AVIATION... Stable, locally breezy trades will focus clouds and limited showers over windward and mauka zones through the period. VFR is forecast to prevail at all locations, although periodic MVFR will be possible late this evening as a pocket of deeper moisture moves over windward Big Island. No AIRMETs in effect. && .MARINE... A surface ridge will remain far north of the state and maintain moderate to locally strong trade winds through the rest of the week. A Small Craft Advisory (SCA) is posted for the typically windier waters around Maui County and the Big Island through Wednesday night, and will likely need to be extended beyond. Surf along all shores are expected to remain tiny through Friday. Small south and southeast swells will maintain small background surf along south facing shores. In the long range, a series of small to moderate south to south-southwest swells are expected starting this weekend and continuing through the first half of next week. North facing shores may see a slight pulse out of the north- northwest Wednesday or Thursday. A larger north-northwest swell is possible this weekend, which could produce small surf along north and west facing exposures. East facing shores will remain small through the week before gradually building to modest heights later this week. && .HFO WATCHES/WARNINGS/ADVISORIES... Small Craft Advisory until 6 AM HST Thursday for Maalaea Bay- Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters. && DISCUSSION...Vaughan AVIATION...JVC MARINE...Foster
The national radar mosaic for the moment the first event began.
1 wildfire. Local standard time, as filed.
Portions of Piilani Highway were closed due to a brushfire.
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, July 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: 1107064.