QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

Earthquake near Pāhala, HI

No earthquake was likely felt in Pāhala in the 24 hours to 6:28 pm HST (04:28 UTC). The last one was M 2.6, 6 km (4 mi) S, at 7:36 pm HST on 8 November 2026, estimated intensity II (weak) in town; 1 felt report to USGS. Every earthquake near Pāhala

This page: a magnitude 3.3 earthquake was recorded in Pāhala, HI, at 11:56 pm HST on 31 August 2022 (09:56 UTC), 34 km deep.

USGS: 1 km E of P?hala, Hawaii

11:56 pm HST, Aug 31, 2022 · · 34 km deep · released about 1.2 tons of TNT

Every earthquake near Pāhala Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hawaii County 44 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
11:56 pm HST on 31 August 2022 ()
Where
in Pāhala, HI · earthquakes near Pāhala
Hawaii today
every earthquake in Hawaii in the last 24 hours
Magnitude
M 3.3 (ml)
Depth
34 km below the surface
Felt
no reports yet
Measured shaking
intensity IV (ShakeMap)
Nearest
Hawaii County, 44 km N
Nearest mapped fault
Ka'oiki-Honu'apo fault system, under 1 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 1469 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 37 km (23 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.

Likely felt in: Pāhala in town, intensity II · Discovery Harbor 25 km, intensity II · Hawaiian Ocean View 35 km, intensity II · Volcano 36 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 1.2 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 140,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 6,200× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,400× the energy of this one
  4. This earthquake M 3.3 about 1.2 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.5× 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.

For this area

The largest earthquake within 50 km since 2016 was M 6.2 on 2021-10-10 — about 26,000 times the energy of this one.

Before 2016, the USGS record lists 46 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.7 Island of Hawai`i, Hawaii · 49 km ENE of this epicentre
  2. 6.7 22 km W of Volcano, Hawaii · 25 km N of this epicentre
  3. 6.4 Kaoiki area, Hawaii · 26 km NNE of this epicentre
  4. 6.3 20 km SSW of Honaunau-Napoopoo, Hawaii · 49 km W of this epicentre
  5. 6.2 Kilauea South Flank, Hawaii · 49 km ENE 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 19.2027, -155.4645. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Hawaii County, HI 44 km (27 mi) N earthquakes near Hawaii County

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

Aftershocks so far

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

  1. 2.0 Island of Hawaii, Hawaii
  2. 2.7 11 km ENE of P?hala, Hawaii
  3. 2.0 9 km ENE of P?hala, Hawaii
  4. 2.0 9 km E of P?hala, Hawaii
  5. 1.8 4 km SSW of P?hala, Hawaii
  6. 1.8 17 km W of Volcano, Hawaii
  7. 2.0 29 km E of Honaunau-Napoopoo, Hawaii
  8. 2.2 15 km S of Volcano, Hawaii
  9. 2.0 10 km ENE of P?hala, Hawaii
  10. 2.0 17 km W of Volcano, Hawaii
  11. 2.0 11 km NE of P?hala, Hawaii
  12. 2.2 0 km S of P?hala, Hawaii
  13. 2.2 Island of Hawaii, Hawaii
  14. 1.8 Island of Hawaii, Hawaii
  15. 2.1 12 km SSE 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.