QuakeIndex

Earthquake · reviewed by a seismologist

M 4.5ml

57 km WSW of Captain Cook, Hawaii

· 39 km deep · released about 94 tons of TNT

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10 km30 km60 km120 km N Hawaii County 102 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 4.5 (ml)
Depth
39 km below the surface
Felt
108 reports · strongest reported intensity III
Measured shaking
intensity III (ShakeMap)
USGS impact alert
green
Nearest
Hawaii County, 102 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 41 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 108 people have reported feeling it to USGS.

How big was it?

This earthquake released about 94 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 1,800× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 80× the energy of this one
  3. Magna, Utah 2020 M 5.7 57× the energy of this one
  4. This earthquake M 4.5 about 94 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 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 19.2218, -156.3858. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hawaii County, HI 102 km (63 mi) WSW of here earthquakes near Hawaii County

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

Aftershocks so far

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

  1. 1.9 49 km WSW of Captain Cook, Hawaii
  2. 2.2 57 km SW of Captain Cook, Hawaii
  3. 2.4 13 km SSW of Captain Cook, Hawaii
  4. 3.4 44 km WSW of Kailua-Kona, Hawaii
  5. 1.9 58 km WSW of Hawaiian Ocean View, Hawaii
  6. 1.8 16 km SSW of Honaunau-Napoopoo, Hawaii
  7. 2.5 45 km W of Kailua-Kona, Hawaii
  8. 1.9 43 km WSW of Captain Cook, Hawaii
  9. 3.0 17 km SSW of Honaunau-Napoopoo, Hawaii
  10. 2.7 17 km SW of Honaunau-Napoopoo, 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 4.4 on 2025-03-15.

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

On USGS

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