Gusty winds toppled a tree near the Mililani Golf Course, injuring someone in the area on the 28th. No other injuries or property damage were reported.
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The episode as NWS HFO wrote it up.
Gusty winds toppled a tree near the Mililani Golf Course, injuring someone in the area on the 28th. No other 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 28, 9:57 AM HST, 5 hours 58 minutes earlier.
Area Forecast Discussion National Weather Service Honolulu HI 957 AM HST Sun Feb 28 2021 .SYNOPSIS... A trough aloft will keep the island atmosphere unstable through much of the week, keeping a wetter than normal trade wind pattern in place. Showers will favor windward and mauka areas with a few showers spreading leeward from time to time. Locally heavy rainfall and thunderstorms will be possible across portions of Maui and the Big Island today. In addition to the showery pattern, trade winds will strengthen today, with windy conditions expected to persist through Tuesday. The trades will then ease to moderate to locally breezy levels during the middle to latter part of the week. && .DISCUSSION... This morning's satellite imagery is showing showery cumulus clouds across the state with showers focused across windward areas. 24 hour rainfall totals show several inches of rain over many areas across windward Big Island with select locations reporting over 4 inches of rain over the last 24 hours. An upper level trough lingering near the state will continue to produce unstable conditions across the state. The greatest moisture continues to be focused over the eastern half of the state as shown by the 12Z soundings from Hilo and Kauai, where precipitable values of 1.46 inches was observed at Hilo compared to the 0.91 inches at Lihue. A Flash Flood Watch remains in effect for windward areas of Big Island and Maui County through today and we should see the threat of heavy showers increase during the afternoon as the instability increases. The Flash Flood Watch may have to be extended through tonight depending on how the weather evolves this afternoon and evening. A 1045 mb high building north of the state will bring an increase of trade winds this afternoon through Monday. A Wind Advisory is in effect for Maui County and the Big Island starting at noon today and it may need to be expanded to the rest of the state as the trades strengthens further this evening and Monday. On the summits of the Big Island, a Winter Weather Advisory is in effect through tonight due to a mix of snow and freezing rain. Conditions remain dry on the summits this morning, but is expected to deteriorate this afternoon and evening as we see afternoon convection develop. For this upcoming week, we should see fairly showery conditions especially windward and mountain areas with windy trades through Tuesday. Trade winds are expected to drop down to moderate to locally breezy conditions during the second half of the week. && .AVIATION... Breezy to strong wet trades will continue through the forecast period. Low ceilings and locally heavy showers will bring periods of MVFR for windward areas, especially overnight and in the early morning. Diurnal heating and increased low /mid-level moisture will favor a chance for thunderstorms over the Big Island this afternoon, particularly the leeward side. AIRMET Tango for moderate lee turbulence will remain in effect for the entire area through the forecast period. AIRMET Sierra for mountain obscuration remains in effect for Windward Big Island and Maui. && .MARINE... Strong high pressure slowly passing far north of the state will produce strong to gale force trade winds and large rough seas into Tuesday. A Small Craft Advisory (SCA)remains posted for all waters for a combination of winds and seas today, and a Gale Warning is in effect for the typically windy waters around the Big Island and Maui County starting this evening. These conditions will persist through Monday and likely into Tuesday as high pressure dominates north of the islands. The high will be weakened by a north Pacific front late Tuesday and Wednesday, leading to a decline in the trade winds and wind-generated seas that should lead to a cancellation of the SCA for most areas. Trades may increase late Thursday and Friday. The large wind-driven seas will maintain high surf along east facing shores for the next few days. Although this trade wind swell is down slightly this morning, it is still rather large and well developed at 9-11 ft at 10-11 seconds, and warrants a High Surf Advisory for east facing shores and a SCA for most waters. Expect an increase of a foot or two as trade winds build a notch tonight and Monday, followed by a gradual decline late Tuesday and Wednesday. As a result, east shore surf will remain well above the 8 foot advisory threshold into Tuesday, then decline to border line levels for Wednesday into Friday. Surf will remain below advisory levels on others shores through much of the week. A northwest swell will peak today at around 4-5 ft at 15 seconds, then decline Monday and Tuesday, followed by a larger northwest swell arriving late Wednesday and peaking near the advisory level Friday. The swell will decline and shift out of the north next weekend. Surf along south facing shores remains above winter average due to a combination of south-southwest swell and wrapping trade wind swell. The south swell will decline on Monday then fade by Tuesday. && .HFO WATCHES/WARNINGS/ADVISORIES... High Surf Advisory until 6 PM HST Tuesday for Kauai Windward- Oahu Koolau-Olomana-Molokai Windward-Maui Windward West-Windward Haleakala-South Big Island-Big Island North and East. Flash Flood Watch until 6 PM HST this evening for Maui Windward West-Windward Haleakala-Haleakala Summit-South Big Island-Big Island North and East-Big Island Interior. Wind Advisory from noon today to 6 PM HST Monday for Molokai- Lanai-Kahoolawe-Maui Windward West-Maui Leeward West-Maui Central Valley-Windward Haleakala-Leeward Haleakala-South Big Island-Big Island North and East-Kohala. Winter Weather Advisory until 6 AM HST Monday for Big Island Summits. Small Craft Advisory until 6 PM HST this evening for Maalaea Bay- Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters. Gale Warning from 6 PM this evening to 6 PM HST Tuesday for Maalaea Bay-Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters. Small Craft Advisory until 6 PM HST Tuesday for Kauai Northwest Waters-Kauai Windward Waters-Kauai Leeward Waters-Kauai Channel- Oahu Windward Waters-Oahu Leeward Waters-Kaiwi Channel-Maui County Windward Waters-Maui County Leeward Waters-Big Island Windward Waters. && DISCUSSION...Kino AVIATION...JVC MARINE...Wroe
The national radar mosaic for the moment the first event began.
1 strong wind. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Hawaii in 2021Every state in 2021This day in weather historyWarnings in Hawaii, February 2021
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: 936400.