QuakeIndex

Earthquake · reviewed by a seismologist

M 4.9ml

17 km E of P?hala, Hawaii

· 9.3 km deep · released about 370 tons of TNT

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10 km30 km60 km120 km N Hawaii County 47 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 4.9 (ml)
Depth
9.3 km below the surface
Felt
107 reports · strongest reported intensity VI
Measured shaking
intensity VI (ShakeMap)
USGS impact alert
green
Nearest
Hawaii County, 47 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2852 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 107 people have reported feeling it to USGS.

How big was it?

This earthquake released about 370 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.9 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 450× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 20× the energy of this one
  3. Magna, Utah 2020 M 5.7 14× the energy of this one
  4. This earthquake M 4.9 about 370 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 790× 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 19.2150, -155.3168. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hawaii County, HI 47 km (29 mi) SSE of here earthquakes near Hawaii County

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

Aftershocks so far

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

  1. 2.0 20 km SSE of Volcano, Hawaii
  2. 2.7 9 km WSW of Volcano, Hawaii
  3. 2.7 9 km WSW of Volcano, Hawaii
  4. 2.4 16 km SSW of Leilani Estates, Hawaii
  5. 2.3 16 km SSE of Volcano, Hawaii
  6. 2.6 19 km ESE of Pāhala, Hawaii
  7. 2.1 16 km E of Pāhala, Hawaii
  8. 2.0 9 km WSW of Volcano, Hawaii
  9. 3.0 14 km S of Fern Forest, Hawaii
  10. 2.5 10 km WSW of Volcano, Hawaii
  11. 2.3 9 km WSW of Volcano, Hawaii
  12. 1.8 13 km SSE of Volcano, Hawaii
  13. 2.9 15 km S of Fern Forest, Hawaii
  14. 1.7 8 km SW of Volcano, Hawaii
  15. 3.2 14 km SSE of Fern Forest, 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 900 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.