Hawaii’s magnitude 6.0 Kona earthquake is now a federal major disaster

A magnitude 6.0 earthquake that shook Hawaii Island on May 22, 2026, is now a federal major disaster, more than three months after the ground moved. President Trump approved the declaration on Sept. 1, unlocking federal recovery money for Hawaii County after a quake that damaged dozens of structures and forced the demolition of at least one home in South Kona.

The disaster is designated FEMA-4936-DR. It covers physical damage only in Hawaii County itself; residents of Oahu, Maui, Kauai and Kalawao can apply for federal disaster loans tied to economic losses, but not for the physical-damage assistance Hawaii County residents now have access to. That split — one county eligible for full recovery aid, four more limited to loans tied to lost business income — is standard FEMA practice when a disaster’s physical damage stays geographically contained even as its economic ripple reaches neighboring islands.

A reverse fault 14 miles under Hōnaunau-Nāpōʻopoʻo

The quake struck at 9:46 p.m. local time roughly 7 miles south of Honaunau-Napoopoo and 22 miles south-southeast of Kailua-Kona, at a depth the U.S. Geological Survey’s Hawaiian Volcano Observatory put at about 14 miles. “The earthquake was caused by the Pacific Plate bending under the immense weight of the Hawaiian Islands,” USGS’s Hawaiian Volcano Observatory explained, comparing the flexing crust and mantle beneath the islands to a diving board bowing under a diver’s weight.

That flexure, not magma movement, is what generated the fault. A separate seismology analysis from Temblor.net put the hypocenter slightly deeper, at 22.6 kilometers in the mantle, and noted the quake produced at least five aftershocks, the largest a magnitude 4.0. USGS scientists said the event was “unlikely to be related to shallow … magmatic activities of the nearby volcanoes.”

The Big Island’s biggest jolt since a 2018 Kīlauea quake

Hawaii has recorded 12 earthquakes of magnitude 6 or greater since 1950, according to the Hawaiian Volcano Observatory, some from the same plate-flexing mechanism and others tied to volcanic flank movement, like the magnitude-6.9 quake that struck during Kīlauea’s 2018 eruption. May’s quake was the largest to hit the island since that 2018 event.

Temblor.net’s analysis drew a closer historical parallel: a magnitude 5.5 earthquake on May 8, 1991, that struck west of the island with the same reverse-fault mechanism at a nearly identical depth. More than 7,000 people across the state reported feeling this year’s shaking, and it did not generate a tsunami, since a hypocenter more than 13 miles down rarely displaces enough seafloor to trigger one.

Twenty-eight structures damaged, one South Kona home demolished

On the ground, the earthquake’s damage was concentrated in South Kona. At least 28 structures were affected, according to the Honolulu Star-Advertiser, and one post-and-pier home sustained foundation damage severe enough that it was declared uninhabitable and demolished.

“This declaration opens the door to critical federal assistance for Hawaii County residents whose homes and essential systems were damaged by the May 22 earthquake,” Hawaii Emergency Management Agency Administrator David Lopez said. Gov. Josh Green said in the same announcement that many families were still dealing with significant damage to homes, water-catchment systems and property, and that the declaration would help residents recover and rebuild.

A declaration limited to Hawaii County, three months after the shaking

The Sept. 1 approval date sits more than three months after the May 22 earthquake, a gap that reflects the standard federal process: state damage assessments, a governor’s request, then a presidential sign-off before FEMA money moves. A Federal Register notice published Sept. 9 formalized FEMA-4936-DR, with the incident period limited to the single day of the earthquake itself.

Because the declaration includes Individual Assistance for Hawaii County, homeowners and renters there can apply for the grants and low-cost loans FEMA describes as “financial assistance and direct services to eligible individuals and households” facing uninsured losses — a broader form of aid than the public-infrastructure-only declarations FEMA sometimes issues elsewhere. Physical-damage loan applications are due by Nov. 1, 2026; economic-injury loan applications for the four contiguous counties run through June 1, 2027. Both loan tracks run through the U.S. Small Business Administration rather than FEMA directly, with applications filed through the agency’s MySBA Loan Portal or in person at locations the state announces county by county.

What the declaration does not do is retroactively speed up anything for the demolished South Kona home or the two dozen other damaged structures counted back in May. The paperwork is now open; the rebuilding, for most of Hawaii County’s claimants, still starts from where the earthquake left it. Whether the next magnitude-6 quake on the island comes from the same kind of plate flexure or from Kīlauea’s restless flank, the Hawaiian Volcano Observatory’s count — a dozen such earthquakes since 1950 — suggests it is a matter of when, not if.

This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.

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