QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

19 km W of Hāwī, Hawaii

· 11 km deep · released about 510 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Maui County 89 kmHawaii County 92 km
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
Magnitude
M 2.8 (ml)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Maui County, 89 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 745 days ago

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

How big was it?

This earthquake released about 510 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.

  1. Mineral, Virginia 2011 M 5.8 30,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 21,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.9× the energy of this one
  4. This earthquake M 2.8 about 510 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.

Where

Epicentre 20.2693, -156.0178. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Maui County, HI 89 km (55 mi) SE of here earthquakes near Maui County
Hawaii County, HI 92 km (57 mi) NW of here earthquakes near Hawaii County
Kalawao County, HI 145 km (90 mi) SE of here earthquakes near Kalawao County

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

Aftershocks so far

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

  1. 3.4 6 km W of Puako, Hawaii
  2. 3.2 11 km S of Hala‘ula, Hawaii
  3. 3.6 31 km SSW of Hana, Hawaii
  4. 2.6 13 km W of Puako, Hawaii
  5. 3.3 34 km WNW of Puako, Hawaii
  6. 3.1 8 km S of Kapaau, Hawaii
  7. 2.6 18 km SSE of Hana, Hawaii
  8. 2.5 4 km NE of Hala‘ula, Hawaii
  9. 2.3 28 km WNW of Puako, Hawaii
  10. 1.9 9 km NNW of Kukuihaele, Hawaii
  11. 2.2 12 km WNW of Puako, Hawaii
  12. 2.7 11 km NW of Puako, Hawaii
  13. 1.8 12 km NNE of Kalaoa, Hawaii
  14. 2.3 5 km W of Kukuihaele, Hawaii
  15. 2.2 13 km SSW of Kapaau, Hawaii

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . 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 5.2 on 2021-07-05 — it released about 3,300 times the energy of this one.

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

On USGS

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