QuakeIndex

Earthquake · reviewed by a seismologist

M 3.7ml

34 km NE of Marine Corps Base Hawaii - MCBH, Hawaii

· 9.9 km deep · released about 4.7 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kalawao County 71 kmHonolulu County 77 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 3.7 (ml)
Depth
9.9 km below the surface
Felt
669 reports · strongest reported intensity IV
Measured shaking
intensity III (ShakeMap)
Nearest
Kalawao County, 71 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1813 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 669 people have reported feeling it to USGS.

How big was it?

This earthquake released about 4.7 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.7 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 36,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 1,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,100× the energy of this one
  4. This earthquake M 3.7 about 4.7 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 9.8× 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 21.6422, -157.4877. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kalawao County, HI 71 km (44 mi) NW of here earthquakes near Kalawao County
Honolulu County, HI 77 km (48 mi) ENE of here earthquakes near Honolulu County
Maui County, HI 127 km (79 mi) NW of here earthquakes near Maui County

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

Aftershocks so far

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

  1. 3.5 23 km WNW of Maunaloa, Hawaii
  2. 3.0 26 km ESE of East Honolulu, Hawaii
  3. 1.9 Oahu region, Hawaii
  4. 3.0 35 km ENE of Waim?nalo Beach, Hawaii
  5. 2.3 50 km N of Maunaloa, Hawaii
  6. 2.5 18 km ENE of Ka‘a‘awa, Hawaii
  7. 2.5 25 km NNW of Maunaloa, Hawaii
  8. 2.1 41 km ENE of Waim?nalo Beach, Hawaii
  9. 3.4 39 km NNW of Kualapu‘u, Hawaii
  10. 3.3 51 km N of Kualapu‘u, Hawaii
  11. 3.0 40 km N of Maunaloa, Hawaii
  12. 2.6 23 km NW of Maunaloa, 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.