Earthquake · reviewed by a seismologist
M 0.8md
7 km SW of Volcano, Hawaii
38 km (24 mi) SW of Hilo, HI
- When
- Magnitude
- M 0.8 (md)
- Depth
- -0.1 km below the surface
- Felt
- no reports yet
- Nearest
- Hawaii County, 31 km NW
- Nearest mapped fault
- Ka'oiki-Honu'apo 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 59 minutes 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 0.53 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 1.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 29,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 20,000,000× the energy of this one
- Around the size people start to feel M 3.0 1,800× the energy of this one
- This earthquake M 0.8 about 0.53 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 1,300,000,000 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 19.4045, -155.2902. 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
2 earthquakes have been recorded within 50 km since this one.
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 |
|---|---|---|---|
| longitude | -155.29 | -155.29 | |
| depth | -0.15 | -0.1 | |
| magnitude | 0.89 | 0.83 |
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.