QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

Earthquake near Bandon, OR

USGS: 9 km NNW of Bandon, Oregon

10:30 pm PDT, Oct 21, 2023 · · 15 km deep · released about 41 lb of TNT

Every earthquake near Bandon Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Coos County 29 kmCurry County 83 kmDouglas County 106 kmJosephine County 115 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
10:30 pm PDT on 21 October 2023 ()
Where
9 km (6 mi) NNW of Bandon, OR · earthquakes near Bandon
Magnitude
M 2.1 (ml)
Depth
15 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Coos County, 29 km E
Nearest mapped fault
Coquille anticline, 4 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 1076 days ago

A magnitude 2.1 earthquake was recorded 9 km (6 mi) NNW of Bandon, OR, at 10:30 pm PDT on 21 October 2023 (05:30 UTC). 1 person has reported feeling it to USGS. This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Barview, Coquille, Bunker Hill, Coos Bay, Myrtle Point, North Bend.

How big was it?

This earthquake released about 41 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 370,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 260,000× the energy of this one
  3. Around the size people start to feel M 3.0 23× the energy of this one
  4. This earthquake M 2.1 about 41 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 4.5 on 2019-11-30 — about 4,600 times the energy of this one.

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 43.1960, -124.4533. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Coos County, OR 29 km (18 mi) E earthquakes near Coos County
Curry County, OR 83 km (52 mi) SSE earthquakes near Curry County
Douglas County, OR 106 km (66 mi) E earthquakes near Douglas County
Josephine County, OR 115 km (72 mi) SE earthquakes near Josephine County

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

Aftershocks so far

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

  1. 1.6 12 km ENE of Glasgow, Oregon
  2. 2.3 19 km WSW of Barview, Oregon
  3. 2.2 22 km WSW of Barview, Oregon
  4. 2.3 21 km WSW of Barview, Oregon
  5. 2.6 10 km NW of Langlois, Oregon
  6. 1.5 15 km ESE of Myrtle Point, Oregon
  7. 1.5 5 km ESE of Coquille, Oregon
  8. 2.4 6 km NE of Bandon, Oregon
  9. 1.5 11 km E of Glasgow, Oregon
  10. 2.0 21 km WSW of Bandon, Oregon
  11. 1.6 4 km W of Powers, Oregon
  12. 2.0 9 km SW of Langlois, Oregon
  13. 2.0 39 km W of Barview, Oregon
  14. 1.9 6 km NNW of Bandon, Oregon
  15. 1.7 8 km N of Bandon, Oregon

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.