Mainly south to southwest winds increased to over 60 mph, with gusts to as high as 81 mph. No significant injuries or property damage were reported.
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The episode as NWS HFO wrote it up.
Mainly south to southwest winds increased to over 60 mph, with gusts to as high as 81 mph. No significant injuries or property damage were reported.
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 Feb 26, 9:15 PM HST, 6 hours 44 minutes earlier.
Area Forecast Discussion National Weather Service Honolulu HI 915 PM HST Tue Feb 26 2019 .SYNOPSIS... A slow-moving band of low level moisture over the eastern islands along with a strong upper level trough moving overhead, will bring unsettled weather to the eastern islands tonight into Wednesday. Locally heavy showers and thunderstorms will be possible tonight across Maui and through Wednesday across the Big Island, particularly in windward areas. Elsewhere across the state, scattered showers will bring some modest rainfall to mainly windward areas with a stray shower spilling over into leeward communities. Building high pressure to the northwest of the islands will produce gusty north winds and cool conditions on Wednesday, with the unsettled weather exiting east of the state Wednesday afternoon. Cool northerly winds and light showers on north facing slopes are expected Thursday into the weekend. A weak front may move down the island chain Sunday. && .DISCUSSION... Currently at the surface, a weak convergence boundary or shear line is oriented from west to east through the Alenuihaha Channel and over the northern tip of the Big Island this evening. Meanwhile, a reinforcing cold front is located around 175 miles north-northwest of Kauai, and much further upstream a 1034 mb high is centered around 1100 miles northwest of Kauai. North of the shear line moderate to breezy north to northeast winds have taken hold, while wind remain rather light and variable to the south. Infrared satellite imagery shows a band of low clouds and showers along and to the north of the shear line, with mainly scattered windward showers across Kauai and Oahu. Main short term concerns continue to revolve around the potential for flooding and winter weather impacts at the high elevation summits on Maui and the Big Island. Tonight through Wednesday, The shear line will slowly settle southward through the Big Island overnight, with moderate to breezy north to northeast winds overspreading the entire island by mid morning Wednesday and continuing through Wednesday night. The band of enhanced moisture with precipitable water (PW) values of 1.1 to 1.4 inches seen in the UW-CIMSS total PW imagery, will remain anchored over Maui County this evening, then slowly shift southeastward into the Big Island after midnight, then exit east of the Big Island Wednesday afternoon. Although moisture will be limited, strong forcing for ascent provided by an upper level trough approaching from the west along with entrance region forcing from a strong upper level jet, should be enough to get a few locally heavy showers and perhaps a rumble or two of thunder to develop mainly over windward sections of Maui and the Big Island later tonight. The best forcing for ascent and deepest moisture should exit Maui by daybreak Wednesday, but is expected to hold in place over the Big Island through around noon Wednesday, before exiting off to the east. Although not an ideal situation for flash flooding given the low precipitable water airmass, it can't be ruled out given the forcing for ascent and the potential for thunderstorms, so as a result a Flash Flood Watch remains in place for Maui through tonight and for the Big Island through Wednesday. Across Kauai and Oahu the airmass will be drier with PW values generally at or below an inch. As a result, shower coverage and intensity should remain lower here. Due to the upper level trough moving through tonight and reinforcing cold front moving through Wednesday, we should still see scattered showers continue to roll into windward areas with some leeward spill over tonight and Wednesday. Wintry weather remains possible for the Haleakala summit tonight and the Big Island summits through Wednesday, and as a result, the winter weather advisory remains in place. The High Wind Warning is also in effect for the Big Island summits through Wednesday. Wednesday night through next Tuesday, Model solutions are in fairly good agreement through the extended periods. Both the GFS and ECMWF show a deep closed low northeast of the islands Wednesday night lifting northeastward through the end of the work week, while high pressure northwest of the state weakens as it shifts southward and closer to the island chain. Locally breezy northerly winds are expected to continue Wednesday night, with the winds then slowly easing through the remainder of the work week. The models show another strong upper trough digging north of the islands over the weekend, leading to another closed low developing northeast of the state Sunday through early next week. The gradient will remain fairly loose across the islands Friday through Saturday, with moderate to breezy northeasterly winds then filling in Saturday night or Sunday as a reinforcing cold front swings through the island chain. Breezy trade winds are then expected early next week, as a new high builds northwest of the state. As for weather details, given the dry low level airmass building in over the island chain with surface dewpoints falling well down into the 50s and perhaps into the upper 40s, along with precipitable water values at or below 1 inch, showers should remain light and confined mainly to windward slopes and coasts through the period. It will remain quite cool as well, with highs generally in the 70s and lows in the 50s and 60s. && .AVIATION... A band of enhanced moisture between Oahu to the Big Island will move slowly eastward tonight, bringing an increase in the shower activity. However, light to moderate northeast trades will concentrate the greatest coverage along the windward coast and mountain slopes. A trough aloft moving over the islands will act to destabilize the atmosphere and bring a slight chance of thunderstorms to Maui and the Big Island. Expect MVFR conditions at times due to the lowered vis and ceilings. AIRMET SIERRA remains in effect for Molokai, Maui, and the Big Island below 2500 ft due to mountain obscuration from clouds and showers. && .MARINE... As a front, currently northwest of Kauai, moves down the island chain from late tonight through Wednesday, winds will shift out of the north and strengthen to fresh to strong speeds through Wednesday night. Winds will mainly stay out of the north or north-northeast through the weekend and will begin to gradually decrease on Thursday as a low pressure system to our northeast begins to move east and away from the state. Winds will briefly become gentle on Friday before increasing to moderate to fresh speeds over the weekend. Surf will continue to build tonight and through Wednesday as a new large long-period northwest swell continues to fill in. This swell is expected to peak Wednesday night near warning levels. Besides the large northwest swell, a developing gale force low to our northeast will bring a large short-period north swell late Wednesday into Thursday. Due to the combination of large short- period and long-period swells and strong northerly winds, seas will be rough and disorganized over the next several days. Currently, we have a High Surf Advisory (HSA) for north and west facing shores of Niihau, Kauai, Oahu, Molokai, and north facing shores of Maui through Thursday morning. A Small Craft Advisory (SCA) has also been issued due to a combination of increasing winds and seas for all Hawaiian channels and windward waters through Thursday morning. The SCA may need to be extended through the day Thursday but favorable winds and seas are expected to return by Friday. && .HFO WATCHES/WARNINGS/ADVISORIES... High Surf Advisory from midnight tonight to 6 AM HST Thursday for Waianae Coast-Oahu North Shore-Oahu Koolau-Molokai-Maui Windward West-Maui Central Valley-Windward Haleakala. High Surf Advisory until 6 AM HST Thursday for Niihau-Kauai Windward-Kauai Leeward. Flash Flood Watch through Wednesday afternoon for Kona-South Big Island-Big Island North and East-Kohala-Big Island Interior. Flash Flood Watch until 6 AM HST Wednesday for Maui. High Wind Warning until 6 PM HST Wednesday for Big Island Summits. Winter Weather Advisory from midnight tonight to 6 PM HST Wednesday for Big Island Summits. Winter Weather Advisory until 6 AM HST Wednesday for Haleakala Summit. Small Craft Advisory from noon Wednesday to midnight HST Wednesday night for Alenuihaha Channel-Big Island Windward Waters. Small Craft Advisory until midnight HST Wednesday night for Kauai Northwest Waters-Kauai Windward Waters-Kauai Leeward Waters. Small Craft Advisory from midnight tonight to midnight HST Wednesday night for Kauai Channel-Oahu Windward Waters-Kaiwi Channel-Maui County Windward Waters. && DISCUSSION...Jelsema AVIATION...Thomas MARINE...Kino
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Hawaii in 2019Every state in 2019This day in weather historyWarnings in Hawaii, February 2019
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: 800035.