QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

Earthquake near Hawaiian Beaches, HI

No earthquake was likely felt in Hawaiian Beaches in the 24 hours to 11:53 pm HST (09:53 UTC). The last one was M 2.8, 17 km (11 mi) SE, at 6:15 pm HST on 1 November 2026, estimated intensity II (weak) in town; 1 felt report to USGS. Every earthquake near Hawaiian Beaches

This page: a magnitude 3.1 earthquake was recorded 10 km (6 mi) east of Hawaiian Beaches, HI, at 4:20 pm HST on 7 May 2018 (02:20 UTC), 5.0 km deep.

USGS: 10 km E of Hawaiian Beaches, Hawaii

32 km (20 mi) ESE of Hilo, HI

4:20 pm HST, May 7, 2018 · · 5.0 km deep · released about 1,300 lb of TNT

Every earthquake near Hawaiian Beaches Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hawaii County 72 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
4:20 pm HST on 7 May 2018 ()
Where
10 km (6 mi) east of Hawaiian Beaches, HI · earthquakes near Hawaiian Beaches
Hawaii today
every earthquake in Hawaii in the last 24 hours
Magnitude
M 3.1 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Hawaii County, 72 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3020 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 41 km (25 mi) from the epicentre. In Hawaiian Beaches, 10 km away, the estimate is intensity III (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: Leilani Estates 13 km, intensity III · Hawaiian Paradise Park 17 km, intensity III · Mountain View 30 km, intensity II · Hilo 35 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 1,300 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 250,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 11,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 7,900× the energy of this one
  4. This earthquake M 3.1 about 1,300 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.4× 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 6.9 on 2018-05-04 — about 500,000 times the energy of this one.

Before 2016, the USGS record lists 21 earthquakes of M5 or more within 50 km; the five largest:

  1. 7.7 17 km SSW of Leilani Estates, Hawaii · 30 km SW of this epicentre
  2. 6.7 Island of Hawai`i, Hawaii · 30 km SW of this epicentre
  3. 6.2 Kilauea South Flank, Hawaii · 30 km SW of this epicentre
  4. 6.2 3 km WSW of Honomu, Hawaii · 50 km NW of this epicentre
  5. 6.2 13 km SSE of Fern Forest, Hawaii · 34 km SW 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 19.5415, -154.8198. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Hawaii County, HI 72 km (45 mi) W earthquakes near Hawaii County

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

Aftershocks so far

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

  1. 1.7 Island of Hawaii, Hawaii
  2. 2.6 15 km SW of Leilani Estates, Hawaii
  3. 1.6 6 km S of Leilani Estates, Hawaii
  4. 1.6 7 km S of Volcano, Hawaii
  5. 1.8 15 km S of Volcano, Hawaii
  6. 1.7 16 km S of Volcano, Hawaii
  7. 2.6 15 km S of Volcano, Hawaii
  8. 2.3 13 km SSE of Volcano, Hawaii
  9. 2.8 16 km S of Volcano, Hawaii
  10. 1.9 5 km SW of Volcano, Hawaii
  11. 2.3 1 km WNW of Volcano, Hawaii
  12. 2.7 5 km SE of Leilani Estates, Hawaii
  13. 2.3 14 km S of Volcano, Hawaii
  14. 2.8 13 km SSE of Volcano, Hawaii
  15. 1.8 4 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.