Winds from the south to southwest again increased across the summits of Mauna Kea and Mauna Loa on the Big Island. There were no reports of serious injuries or property damage.
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.
Winds from the south to southwest again increased across the summits of Mauna Kea and Mauna Loa on the Big Island. There were no reports of serious injuries or property damage.
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 Mar 12, 3:30 AM HST, 6 hours 9 minutes earlier.
Area Forecast Discussion National Weather Service Honolulu HI 330 AM HST Mon Mar 12 2018 .SYNOPSIS... Strong high pressure centered far to the northwest of the state will maintain fresh to strong trade winds through midweek. A weak front is forecast to move across the area through today accompanied by a small increase in windward and mauka showers. Thick high clouds will blanket most of the state through the next several days. A wetter weather pattern is on tap beginning late today and continuing through much of the week. && .DISCUSSION... A strong high pressure system currently northwest of the state will maintain fresh to strong trade winds through the middle of this week. The subtropical jet over Hawaii is pushing broken to overcast high clouds over the area. A shallow cold front is forecast to move across the island chain today. A slight uptick in shower activity will accompany the front that will mainly affect windward slopes. Winds at the Big island summits have increased enough to warrant issuance of a Wind Advisory there. Models show winds will likely remain blustery up there through this afternoon. An upper trough is forecast to take up a position just to the west of the state today, and begin tracking east towards us. Southerly flow on the east side of this trough will draw up deep tropical moisture and increase the chances for rain across portions of the state beginning this afternoon. The high clouds will also thicken up and keep overcast skies over the state through at least Thursday. The upper trough will weaken and lift away from our area by late Wednesday. Models indicate that moisture brought up from the south will initially affect The Big Island and Maui beginning late today, with rainfall chances increasing for the rest of the island chain by midweek. However, models disagree on the placement of the highest rain threat areas as well as the structure of local winds. GFS consistently wants to develop a a low just southwest of the islands while ECMWF wants to develop one farther to the west. Wetter weather is coming, but confidence remains rather low as to where the greatest amounts of rain will fall. Our gridded database aligns closer to the ECMWF solution, which keeps the low west of the state with showers pushed over the islands within easterly flow through Thursday. Both GFS and ECMWF show the surface features tracking away or weakening on Friday and Saturday with remnant showers and southeast flow over the islands. && .AVIATION... High pressure northwest of the state will maintain moderate to breezy trade winds to the islands today. Clouds and showers will favor windward and mauka areas, bringing brief MVFR ceilings/VIS. Conditions are expected to deteriorate particularly for the windward areas of Maui County and the Big Island later today, with cloud and shower coverage increasing hence MVFR conditions becoming more widespread. AIRMET MTN OBSC may be needed for those areas. AIRMET Tango remains in effect for moderate low level turbulence over and downwind of the terrain of all islands. These conditions will continue today. AIRMET Tango for moderate upper level turbulence between 150 and FL280 will probably be canceled later today as the strong winds aloft shift north. Light icing over the area will persist due to the thickening mid and upper level clouds. Conditions are expected to stay below the AIRMET threshold for now, though with increasing moisture across much of the area, that could change later today. && .MARINE... Fresh to strong northeasterly trade winds will persist as the islands remain under the influence of a strong surface high located far northwest of the state. A Small Craft Advisory (SCA) is in effect for all waters due to winds and seas. A large north swell will fill in, and north and east shore surf from Kauai to Maui will build to warning levels today. During this time, advisory level surf is expected along north and east facing shores of the Big Island. Thus, a High Surf Warning (HSW) is in effect for north and east facing shores of most islands. The north swell will quickly decline Tuesday and Wednesday, as a rough, short-period trade wind swell builds. As a result, a High Surf Advisory will likely remain in place for east facing shores through Tuesday or Wednesday. The current SCA now covers all waters. Today, trade winds will increase as a developing trough south of the state tightens the local pressure gradient, and the incoming north swell will push combined seas above 10 feet. As the north swell drops, the strong trades will generate large and rough short-period seas, which will likely keep the SCA in place through at least Tuesday. In addition, the trough moving up from the south will bring the potential for unsettled weather through mid week. Mariners should monitor the latest forecast as the weather pattern becomes better defined. && .HFO WATCHES/WARNINGS/ADVISORIES... High Surf Warning until 6 AM HST Tuesday for Niihau-Kauai Windward-Kauai Leeward-Oahu North Shore-Oahu Koolau-Olomana- Molokai-Maui Windward West-Maui Central Valley-Windward Haleakala. High Surf Advisory until 6 AM HST Tuesday for Big Island North and East. Wind Advisory until 6 PM HST this evening for Big Island Summits. Small Craft Advisory until 6 PM HST Tuesday for all Hawaiian waters- && DISCUSSION...Powell AVIATION...Hui MARINE...Kinel
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 2018Every state in 2018This day in weather historyWarnings in Hawaii, March 2018
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: 739520.