12 km NNW of Kukuihaele, Hawaii

2021-07-05 23:43 UTC · 27 km deep · released about 860 tons of TNT

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

When: 2021-07-05 23:43 UTC
Magnitude: M 5.2 (ml)
Depth: 27 km below the surface
Felt: 1335 reports · strongest reported intensity V
Measured shaking: intensity V (ShakeMap)
USGS impact alert: green
Nearest: Hawaii County, 70 km S
Status: Reviewed by a seismologist

USGS · last changed by USGS 1589 days ago · we first saw it 1589 days ago

This was a moderate earthquake. Shaking at this size can damage poorly built structures close to the epicentre. 1335 people have reported feeling it to USGS.

How big was it?

This earthquake released about 860 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 6.2 would have released about 32 times as much.

Northridge, California 1994 M 6.7 200× the energy of this one
Mineral, Virginia 2011 M 5.8 8.8× the energy of this one
Magna, Utah 2020 M 5.7 6.2× the energy of this one
This earthquake M 5.2 about 860 tons of TNT
Around the size people start to feel M 3.0 this one released 1,800× more

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.

Where

Map loads when it scrolls into view

Epicentre 20.2203, -155.6300. Map © OpenStreetMap contributors.

Nearby places

Place	Distance	Direction
Hawaii County, HI	70 km (44 mi)	N of here	earthquakes near Hawaii County
Maui County, HI	123 km (77 mi)	SE of here	earthquakes near Maui County

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

Aftershocks so far

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

1.7 11 km SW of Pa‘auilo, Hawaii 02:46 UTC
2.1 13 km SSW of Honoka‘a, Hawaii 09:38 UTC
2.1 17 km SW of Pa‘auilo, Hawaii 19:14 UTC
1.8 7 km ENE of Kukuihaele, Hawaii 05:47 UTC
2.0 14 km S of Kapaau, Hawaii 21:26 UTC
2.6 10 km S of Kapaau, Hawaii 22:41 UTC
2.8 11 km S of Kapaau, Hawaii 22:32 UTC
1.8 9 km S of Honoka‘a, Hawaii 18:25 UTC
2.3 25 km SE of Waikoloa, Hawaii 01:15 UTC
2.9 15 km NNE of Kukuihaele, Hawaii 02:05 UTC
2.8 8 km ESE of Waikoloa, Hawaii 11:34 UTC
2.3 8 km SSW of Puako, Hawaii 14:43 UTC
2.6 22 km SSE of Waimea, Hawaii 09:29 UTC
2.3 10 km S of Kukuihaele, Hawaii 18:39 UTC
2.4 24 km SE of Waimea, Hawaii 19:56 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 13:55 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

For this area

The largest earthquake within 50 km in our catalogue was M 4.9 on 2019-11-11.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

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.