QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

53 km ESE of Naalehu, Hawaii

Yes. A magnitude 2.7 earthquake was recorded 53 km ESE of Naalehu, Hawaii, at 5:33 pm HST on 29 April 2019 (03:33 UTC), 8.5 km deep.

· 8.5 km deep · released about 290 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hawaii County 94 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
Hawaii today
every earthquake in Hawaii in the last 24 hours
Magnitude
M 2.7 (ml)
Depth
8.5 km below the surface
Felt
no reports yet
Nearest
Hawaii County, 94 km NNW
Nearest mapped fault
Lo'ihi Seamount, 7 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2668 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 23 km (14 mi) from the epicentre. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 290 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 51,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 36,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.2× the energy of this one
  4. This earthquake M 2.7 about 290 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.

For this area

The largest earthquake within 50 km since 2016 was M 4.9 on 2018-05-05 — about 2,500 times the energy of this one.

Before 2016, the USGS record lists 7 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.1 11 km SE of Naalehu, Hawaii · 43 km WNW of this epicentre
  2. 5.8 Kilauea area, Hawaii · 43 km WNW of this epicentre
  3. 5.4 35 km SSE of Naalehu, Hawaii · 33 km W of this epicentre
  4. 5.3 Island of Hawai`i, Hawaii · 50 km NNE of this epicentre
  5. 5.3 54 km SE of P?hala, Hawaii · 13 km NE of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 18.8242, -155.1373. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Hawaii County, HI 94 km (59 mi) NNW earthquakes near Hawaii County

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

Aftershocks so far

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

  1. 1.9 10 km SSE of P?hala, Hawaii
  2. 2.0 9 km SSE of P?hala, Hawaii
  3. 1.9 7 km SSE of P?hala, Hawaii
  4. 2.7 6 km ESE of P?hala, Hawaii
  5. 1.9 12 km SE of P?hala, Hawaii
  6. 2.1 13 km SSE of P?hala, Hawaii
  7. 2.4 7 km SE of P?hala, Hawaii
  8. 1.8 45 km ESE of Naalehu, Hawaii
  9. 1.8 50 km ESE of Naalehu, Hawaii
  10. 1.9 15 km SSE of P?hala, Hawaii
  11. 2.1 18 km ESE of Naalehu, Hawaii
  12. 1.9 12 km SSE of P?hala, Hawaii
  13. 1.9 15 km SSE of P?hala, Hawaii
  14. 1.8 14 km SE of P?hala, Hawaii
  15. 1.9 13 km SSE of P?hala, 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.