QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

Hawaii region, Hawaii

· 2.8 km deep · released about 610 lb of TNT

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10 km30 km60 km120 km N Hawaii County 63 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 2.9 (ml)
Depth
2.8 km below the surface
Felt
no reports yet
Nearest
Hawaii County, 63 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3062 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 610 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 25,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 18,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.6× the energy of this one
  4. This earthquake M 2.9 about 610 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 19.4680, -154.9142. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hawaii County, HI 63 km (39 mi) ESE of here earthquakes near Hawaii County

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

Aftershocks so far

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

  1. 2.0 5 km ESE of Nanawale Estates, Hawaii
  2. 2.8 5 km E of Leilani Estates, Hawaii
  3. 2.7 14 km SSE of Volcano, Hawaii
  4. 2.9 6 km SW of Volcano, Hawaii
  5. 2.4 10 km SSW of Volcano, Hawaii
  6. 1.5 4 km ESE of Nanawale Estates, Hawaii
  7. 2.5 5 km E of Leilani Estates, Hawaii
  8. 2.8 7 km SW of Volcano, Hawaii
  9. 2.2 5 km SW of Volcano, Hawaii
  10. 2.3 4 km ESE of Leilani Estates, Hawaii
  11. 2.8 1 km NNE of Leilani Estates, Hawaii
  12. 2.1 5 km ESE of Nanawale Estates, Hawaii
  13. 2.4 3 km ESE of Nanawale Estates, Hawaii
  14. 1.9 5 km SSW of Volcano, Hawaii
  15. 1.9 14 km S of Volcano, 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 6.9 on 2018-05-04 — it released about 1,100,000 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.