QuakeIndex

Earthquake · reviewed by a seismologist

M 5.3ml

20 km E of Kalaoa, Hawaii

· 13 km deep · released about 1.5 kilotons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hawaii County 34 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 5.3 (ml)
Depth
13 km below the surface
Felt
1986 reports · strongest reported intensity V
Measured shaking
intensity VII (ShakeMap)
USGS impact alert
green
Nearest
Hawaii County, 34 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 279 days ago

This was a moderate earthquake. Shaking at this size can damage poorly built structures close to the epicentre. 1986 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1.5 kilotons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 6.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 110× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 4.9× the energy of this one
  3. Magna, Utah 2020 M 5.7 3.5× the energy of this one
  4. This earthquake M 5.3 about 1.5 kilotons of TNT
  5. Around the size people start to feel M 3.0 this one released 3,200× 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

Epicentre 19.7420, -155.7905. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hawaii County, HI 34 km (21 mi) WNW of here earthquakes near Hawaii County

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

Aftershocks so far

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

  1. 1.8 19 km S of Waikoloa, Hawaii
  2. 1.6 18 km S of Waikoloa, Hawaii
  3. 1.7 21 km E of Honaunau-Napoopoo, Hawaii
  4. 3.4 19 km S of Waikoloa, Hawaii
  5. 1.6 19 km E of Kalaoa, Hawaii
  6. 1.6 17 km S of Waikoloa, Hawaii
  7. 2.3 25 km E of Honaunau-Napoopoo, Hawaii
  8. 1.5 14 km S of Waikoloa, Hawaii
  9. 1.8 20 km E of Kalaoa, Hawaii
  10. 2.0 21 km ENE of Honaunau-Napoopoo, Hawaii
  11. 1.8 27 km E of Honaunau-Napoopoo, Hawaii
  12. 1.8 30 km E of Honaunau-Napoopoo, Hawaii
  13. 1.9 27 km E of Honaunau-Napoopoo, Hawaii
  14. 2.1 19 km ENE of Kalaoa, Hawaii
  15. 1.9 25 km WNW 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.

On USGS

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