Below average rainfall over the past several months have allowed severe and in some areas extreme drought conditions to develop and/or persist over the southeast and upslope portions of the Big Island.
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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.
Below average rainfall over the past several months have allowed severe and in some areas extreme drought conditions to develop and/or persist over the southeast and upslope portions of 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 Mar 31, 8:40 PM HST, 3 hours 20 minutes earlier.
Area Forecast Discussion National Weather Service Honolulu HI 840 PM HST Mon Mar 31 2025 .SYNOPSIS... Rain chances will steadily increase through the week as moderate southerly winds associated with an approaching cold front and upper-level disturbance draws moisture northward into the islands. The front may reach the western end of the state later this week, potentially leading to more widespread showers. Trade winds look to return by the weekend. && .DISCUSSION... The latest surface analysis shows a gale low approximately 900 nm northwest of the state moving slowly towards the southeast. Its associated cold front is approximately 400 nm northwest of Kauai this afternoon. Meanwhile, satellite imagery continues to show partly cloudy skies across the islands, with isolated showers streaming in from the south on east to southeasterly flow. In the near-term, the main impact will continue to be humid and voggy conditions due to the southerly winds. Guidance continues to remain in good agreement through the week and shows the gale low and associated cold front slowly shifting southeast towards the state. Moderate southerly winds will hold through Tuesday. Meanwhile, hi-res guidance continues to show an increase in moisture advected northwards with the southerly winds over the next few days allowing for isolated to scattered showers mainly for areas exposed to the southerly winds. Winds look to gradually ease on Wednesday and Thursday as a deep moisture axis and frontal boundary approaches and moves over Kauai before stalling and weakening and across the western end of the state Friday. This moisture, combined with broad upper- level troughing and instability, will support more widespread showers later this week, especially across Kauai and Oahu. Trade winds look to fill in across the region by late Friday as the front dissipates, with breezy trade wind developing over the weekend. Lingering moisture will keep chances of rainfall high mostly along windward and mauka areas, with a few showers spilling over into leeward areas on occasion due to lingering instability. A more typical breezy tradewinds pattern shall return next week with drier conditions. && .AVIATION... Southerly winds will continue to strengthen to moderate levels over the western side of the state due to a front approaching the island chain from the northwest. Over the eastern side of the state, moderate to breezy southeast winds will continue. Increasing SHRA expected over the western side of the state with sea breezes expected over Maui and the Big Island. Brief MVFR conds are likely within any heavier SHRA. No AIRMETs currently in effect however Sierra may be needed overnight for Kauai and Oahu for mtn obsc. All locations can expect to see some VOG with the degassing of Kilauea. It is not expected to impact vsbys enough to warrant mention in the TAFs. && .MARINE... A frontal system approaching the state from the distant northwest will help maintain moderate to locally breezy southerly flow across the local waters through Tuesday. Localized terrain enhancement around the Big Island and Kauai will continue to result in advisory level winds, and a Small Craft Advisory (SCA) remains in effect for these areas through Tuesday evening. The winds will gradually ease Wednesday and Thursday as the aforementioned front nears the islands. As the front dissipates Friday through the weekend, moderate to locally strong northeast trades will begin to fill in. A series of small overlapping north and northwest swells will keep some surf in place along exposed north and east facing shores through late Wednesday. A new north swell is expected to arrive on Tuesday, along with some smaller northwest energy. A moderate north- northwest swell should arrive on Friday and could produce advisory level surf. A large to extra large north to north- northwest swell is progged to arrive this weekend and would likely produce warning level surf along north and possibly west and east facing shores. Surf along south facing shores will gradually lower through the middle of the week with mainly background energy by the second half of the week. && .HFO WATCHES/WARNINGS/ADVISORIES... Small Craft Advisory until 6 PM HST Tuesday for Kauai Northwest Waters-Kauai Windward Waters-Kauai Leeward Waters-Big Island Windward Waters-Big Island Leeward Waters. && DISCUSSION...Almanza AVIATION...Walsh MARINE...Thomas
The national radar mosaic for the moment the first event began.
1 drought. Local standard time, as filed.
Ranchers that operated in the upper Hamakua and lower Ka?u slopes of the Big Island reported poor pasture conditions. Some of them also supplemented feed and hauled water for their cattle.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Hawaii in 2025Every state in 2025This day in weather historyWarnings in Hawaii, April 2025
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: 1250936.