Earthquake · reviewed by a seismologist
M 1.8ml
7 km SW of Volcano, Hawaii
38 km (24 mi) SW of Hilo, HI
- When
- Magnitude
- M 1.8 (ml)
- Depth
- 0.4 km below the surface
- Felt
- no reports yet
- Nearest
- Hawaii County, 31 km NW
- Nearest mapped fault
- Koa'e fault system, 5 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 1 hour ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
How big was it?
This earthquake released about 13 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
- Magna, Utah 2020 M 5.7 810,000× the energy of this one
- Around the size people start to feel M 3.0 72× the energy of this one
- This earthquake M 1.8 about 13 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 51,000,000 times the energy of this one.
Before 2016, the USGS record lists 43 earthquakes of M5 or more within 50 km; the five largest:
- 7.7 17 km SSW of Leilani Estates, Hawaii · 31 km ESE of this epicentre
- 6.7 Island of Hawai`i, Hawaii · 29 km ESE of this epicentre
- 6.7 22 km W of Volcano, Hawaii · 17 km W of this epicentre
- 6.4 Kaoiki area, Hawaii · 12 km WNW of this epicentre
- 6.2 Kilauea South Flank, Hawaii · 29 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 19.4047, -155.2887. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Hawaii County, HI | 31 km (19 mi) | NW | earthquakes near Hawaii County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
4 earthquakes have been recorded within 50 km since this one.
- 1.8 12 km NNW of Wai‘ōhinu, Hawaii
- 2.0 7 km SW of Volcano, Hawaii
- 0.8 7 km SW of Volcano, Hawaii
- 1.3 6 km SW 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.
Revisions
USGS refines a solution as more stations report. Every change we have seen is listed here.
| What changed | From | To | When |
|---|---|---|---|
| review status | automatic | reviewed | |
| location | 7 km WSW of Volcano, Hawaii | 7 km SW of Volcano, Hawaii | |
| longitude | -155.29 | -155.29 | |
| latitude | 19.41 | 19.4 | |
| depth | 0.07 | 0.37 | |
| magnitude | 2.17 | 1.76 |
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.