Earthquake near Hawaiian Ocean View, HI

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 39 km (24 mi) from the epicentre. In Hawaiian Ocean View, 16 km away, the estimate is intensity III (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.

Likely felt in: Hawaiian Ocean View 16 km, intensity III · Discovery Harbor 17 km, intensity III · Pāhala 22 km, intensity II · Honaunau-Napoopoo 35 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 1,100 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

1. Northridge, California 1994 M 6.7 300,000× the energy of this one
2. Mineral, Virginia 2011 M 5.8 13,000× the energy of this one
3. Magna, Utah 2020 M 5.7 9,400× the energy of this one
4. This earthquake M 3.0 about 1,100 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 6.2 on 2021-10-10 — about 55,000 times the energy of this one.

Before 2016, the USGS record lists 27 earthquakes of M5 or more within 50 km; the five largest:

1. 6.7 22 km W of Volcano, Hawaii · 36 km NE of this epicentre Nov 16, 1983
2. 6.4 Kaoiki area, Hawaii · 40 km NE of this epicentre Mar 28, 1915
3. 6.3 20 km SSW of Honaunau-Napoopoo, Hawaii · 27 km WNW of this epicentre Aug 21, 1951
4. 6.2 8 km SW of Volcano, Hawaii · 47 km ENE of this epicentre Nov 2, 1918
5. 6.2 21 km N of Pahala, Hawaii · 34 km NE of this epicentre Jun 28, 1962

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

Epicentre 19.1878, -155.6837. Map © OpenStreetMap contributors.

Nearby places

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

Aftershocks so far

6 earthquakes have been recorded within 50 km since this one.

1. 2.3 2 km SW of Pāhala, Hawaii 15:32 UTC
2. 2.0 1 km SW of Pāhala, Hawaii 13:20 UTC
3. 1.9 18 km NNE of Pāhala, Hawaii 07:14 UTC
4. 1.8 15 km NE of Pāhala, Hawaii 05:39 UTC
5. 1.9 17 km NE of Pāhala, Hawaii 04:07 UTC
6. 2.3 28 km NNW of Pāhala, Hawaii 00:47 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 20:39 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

Revisions

USGS refines a solution as more stations report. Every change we have seen is listed here.

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.