Earthquake near Honaunau-Napoopoo, HI

USGS: 15 km ENE of Honaunau-Napoopoo, Hawaii

8:09 am HST, Oct 9, 2026 · 2026-10-09 18:09 UTC · 7.5 km deep · released about 15 lb of TNT

Every earthquake near Honaunau-Napoopoo Felt it? Tell USGS Check my area

Distance rings around the epicentre, with the nearest towns at their true direction. Not a shaking map — see the USGS ShakeMap for that.

When: 8:09 am HST on 9 October 2026 (2026-10-09 18:09 UTC)
Where: 16 km (10 mi) ENE of Honaunau-Napoopoo, HI · earthquakes near Honaunau-Napoopoo
Magnitude: M 1.8 (md)
Depth: 7.5 km below the surface
Felt: no reports yet
Nearest: Hawaii County, 25 km ENE
Nearest mapped fault: Mauna Loa Volcano, 14 km from its surface trace — near is not the same as on
Status: Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS 1 hour ago · we first saw it 1 hour ago

A magnitude 1.8 earthquake was recorded 16 km (10 mi) ENE of Honaunau-Napoopoo, HI, at 8:09 am HST on 9 October 2026 (18:09 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 11 km (7 mi) from the epicentre. In Honaunau-Napoopoo, 16 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Earthquakes near other towns within 30 km: Kealakekua, Captain Cook, Honalo, Kahaluu-Keauhou, Hōlualoa.

How big was it?

This earthquake released about 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
Magna, Utah 2020 M 5.7 710,000× the energy of this one
Around the size people start to feel M 3.0 63× the energy of this one
This earthquake M 1.8 about 15 lb of TNT

Energy from the Gutenberg–Richter relation (log₁₀E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

For this area

The largest earthquake within 50 km since 2016 was M 6.0 on 2026-05-23 — about 1,700,000 times the energy of this one.

Before 2016, the USGS record lists 25 earthquakes of M5 or more within 50 km; the five largest:

6.7 22 km W of Volcano, Hawaii · 31 km ESE of this epicentre Nov 16, 1983
6.7 14 km SW of Puako, Hawaii · 45 km NNW of this epicentre Oct 15, 2006
6.5 Hualālai area, Hawaii · 38 km NW of this epicentre Oct 6, 1929
6.4 Kaoiki area, Hawaii · 36 km ESE of this epicentre Mar 28, 1915
6.3 20 km SSW of Honaunau-Napoopoo, Hawaii · 34 km SW of this epicentre Aug 21, 1951

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Map loads when it scrolls into view

Nearby places

Place	Distance	Direction from the epicentre
Hawaii County, HI	25 km (16 mi)	ENE	earthquakes near Hawaii County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

No further earthquakes have been recorded within 50 km since this one.

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 19:42 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

The official USGS event page — the source of record for every value above
Did you feel it? Report it to USGS — reports go to USGS, not to us
ShakeMap for this event, when USGS has produced one

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.