Earthquake near Hana, HI

USGS: 10 km WSW of Hana, Hawaii

43 km (27 mi) ESE of Kahului, HI

7:10 am HST, Aug 6, 2017 · 2017-08-06 17:10 UTC · 63 km deep · released about 430 lb of TNT

Every earthquake near Hana Felt it? Tell USGS Check my area

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: 7:10 am HST on 6 August 2017 (2017-08-06 17:10 UTC)
Where: 11 km (7 mi) WSW of Hana, HI · earthquakes near Hana
Magnitude: M 2.8 (md)
Depth: 63 km below the surface
Felt: no reports yet
Nearest: Maui County, 56 km WNW
Status: Reviewed by a seismologist

USGS · last changed by USGS 2279 days ago · we first saw it 2279 days ago

A magnitude 2.8 earthquake was recorded 11 km (7 mi) WSW of Hana, HI, at 7:10 am HST on 6 August 2017 (17:10 UTC). This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

Earthquakes near other towns within 30 km: Olinda, CDP, Huelo, Kula, Makawao, Kēōkea, Pukalani.

How big was it?

This earthquake released about 430 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 35,000× the energy of this one
Magna, Utah 2020 M 5.7 25,000× the energy of this one
Around the size people start to feel M 3.0 2.2× the energy of this one
This earthquake M 2.8 about 430 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 4.2 on 2017-07-30 — about 140 times the energy of this one.

Before 2016, the USGS record lists 4 earthquakes of M5 or more within 50 km:

6.6 10 km ENE of Wailua, Hawaii · 19 km N of this epicentre Jan 23, 1938
5.8 2 km WSW of Hana, Hawaii · 8 km ENE of this epicentre Sep 26, 1929
5.6 Maui region, Hawaii · 32 km NNE of this epicentre Jun 4, 1904
5.1 24 km WNW of H?w?, Hawaii · 41 km S of this epicentre Feb 21, 1976

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
Maui County, HI	56 km (35 mi)	WNW	earthquakes near Maui County
Kalawao County, HI	107 km (67 mi)	WNW	earthquakes near Kalawao County

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

Aftershocks so far

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

2.8 20 km NW of Hāwī, Hawaii 09:06 UTC
2.6 40 km E of Hana, Hawaii 20:50 UTC
3.6 31 km SSW of Hana, Hawaii 05:34 UTC
2.6 18 km SSE of Hana, Hawaii 05:23 UTC
3.7 2 km SE of Hana, Hawaii 06:44 UTC
2.4 10 km N of Hana, Hawaii 17:12 UTC
2.5 16 km ENE of Wailua, Hawaii 10:26 UTC
4.0 28 km SSW of Hana, Hawaii 16:47 UTC
3.1 0 km WNW of Haiku-Pauwela, Hawaii 12:12 UTC
2.8 27 km S of Hana, Hawaii 03:49 UTC
3.4 20 km SE of Hana, Hawaii 03:33 UTC
2.5 6 km E of Haiku-Pauwela, Hawaii 07:55 UTC
2.4 6 km NNW of Haiku-Pauwela, Hawaii 23:24 UTC
2.3 35 km ENE of Hana, Hawaii 19:16 UTC
4.7 10 km NNE of Wailua, Hawaii 10:51 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 02:08 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.