QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

Earthquake near Honolulu, HI

USGS: 31 km ENE of Marine Corps Base Hawaii - MCBH, Hawaii

47 km (29 mi) NE of Honolulu, HI · 41 km (25 mi) NE of East Honolulu, HI

11:15 am HST, Jan 18, 2017 · · 17 km deep · released about 360 lb of TNT

Every earthquake near Honolulu Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kalawao County 66 kmHonolulu County 76 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
11:15 am HST on 18 January 2017 ()
Where
50 km (31 mi) NE of Honolulu, HI · earthquakes near Honolulu
Magnitude
M 2.7 (ml)
Depth
17 km below the surface
Felt
no reports yet
Nearest
Kalawao County, 66 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2279 days ago

A magnitude 2.7 earthquake was recorded 50 km (31 mi) NE of Honolulu, HI, at 11:15 am HST on 18 January 2017 (21:15 UTC). This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 360 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 42,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 30,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.6× the energy of this one
  4. This earthquake M 2.7 about 360 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

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 21.5827, -157.4827. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kalawao County, HI 66 km (41 mi) SE earthquakes near Kalawao County
Honolulu County, HI 76 km (47 mi) W earthquakes near Honolulu County
Maui County, HI 122 km (76 mi) SE earthquakes near Maui County

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

Aftershocks so far

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

  1. 3.5 23 km WNW of Maunaloa, Hawaii
  2. 3.0 26 km ESE of East Honolulu, Hawaii
  3. 1.9 Oahu region, Hawaii
  4. 3.0 35 km ENE of Waim?nalo Beach, Hawaii
  5. 2.3 50 km N of Maunaloa, Hawaii
  6. 2.5 18 km ENE of Ka‘a‘awa, Hawaii
  7. 2.5 25 km NNW of Maunaloa, Hawaii
  8. 2.1 41 km ENE of Waim?nalo Beach, Hawaii
  9. 3.4 39 km NNW of Kualapu‘u, Hawaii
  10. 3.3 51 km N of Kualapu‘u, Hawaii
  11. 3.0 40 km N of Maunaloa, Hawaii
  12. 2.6 23 km NW of Maunaloa, Hawaii
  13. 3.7 34 km NE of Marine Corps Base Hawaii - MCBH, Hawaii
  14. 2.8 49 km ENE of Marine Corps Base Hawaii - MCBH, 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.