QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

Earthquake near Volcano, HI

No earthquake was likely felt in Volcano in the 24 hours to 11:53 pm HST (09:53 UTC). The last one was M 1.9, 6 km (4 mi) W, at 11:09 am HST on 11 November 2026, estimated intensity II (weak) in town. Every earthquake near Volcano

This page: a magnitude 1.5 earthquake was recorded 5 km (3 mi) east-southeast of Volcano, HI, at 5:34 pm HST on 7 May 2018 (03:34 UTC), 8.4 km deep.

USGS: 4 km ESE of Volcano, Hawaii

30 km (19 mi) SSW of Hilo, HI

5:34 pm HST, May 7, 2018 · · 8.4 km deep · released about 5.7 lb of TNT

Every earthquake near Volcano Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hawaii County 38 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
5:34 pm HST on 7 May 2018 ()
Where
5 km (3 mi) east-southeast of Volcano, HI · earthquakes near Volcano
Hawaii today
every earthquake in Hawaii in the last 24 hours
Magnitude
M 1.5 (md)
Depth
8.4 km below the surface
Felt
no reports yet
Nearest
Hawaii County, 38 km WNW
Nearest mapped fault
Koa'e fault system, 9 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 1024 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 6 km (4 mi) from the epicentre. In Volcano, 5 km away, the estimate is intensity II (weak). 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: Volcano 5 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 5.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.7 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 6.9 on 2018-05-04 — about 120,000,000 times the energy of this one.

Before 2016, the USGS record lists 44 earthquakes of M5 or more within 50 km; the five largest:

  1. 7.7 17 km SSW of Leilani Estates, Hawaii · 23 km ESE of this epicentre
  2. 6.7 Island of Hawai`i, Hawaii · 20 km ESE of this epicentre
  3. 6.7 22 km W of Volcano, Hawaii · 27 km W of this epicentre
  4. 6.4 Kaoiki area, Hawaii · 22 km W of this epicentre
  5. 6.2 Kilauea South Flank, Hawaii · 20 km ESE 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 19.4332, -155.1885. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Hawaii County, HI 38 km (23 mi) WNW 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. 2.7 5 km SE of Leilani Estates, Hawaii
  2. 2.3 14 km S of Volcano, Hawaii
  3. 2.3 33 km ESE of P?hala, Hawaii
  4. 2.3 33 km ESE of P?hala, Hawaii
  5. 3.0 7 km E of P?hala, Hawaii
  6. 2.8 13 km SSE of Volcano, Hawaii
  7. 1.8 4 km SW of Volcano, Hawaii
  8. 2.3 5 km SE of Leilani Estates, Hawaii
  9. 2.0 12 km SSE of Volcano, Hawaii
  10. 2.2 3 km SW of Volcano, Hawaii
  11. 1.8 5 km SW of Volcano, Hawaii
  12. 2.1 29 km SE of P?hala, Hawaii
  13. 1.7 6 km WSW of Volcano, Hawaii
  14. 2.6 7 km SSE of Pāhala, Hawaii
  15. 2.8 4 km SSW of Leilani Estates, 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.