QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

60 km W of Florence, Oregon

· 21 km deep · released about 480 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lincoln County 103 kmCoos County 109 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
Magnitude
M 2.8 (ml)
Depth
21 km below the surface
Felt
no reports yet
Measured shaking
intensity III (ShakeMap)
Nearest
Lincoln County, 103 km NE
Nearest mapped fault
Heceta Bank structure, 9 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 3135 days ago

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 480 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 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.

Where

Epicentre 43.9998, -124.8511. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lincoln County, OR 103 km (64 mi) SW of here earthquakes near Lincoln County
Coos County, OR 109 km (68 mi) NNW of here earthquakes near Coos County
Benton County, OR 126 km (78 mi) WSW of here earthquakes near Benton County
Polk County, OR 153 km (95 mi) SW of here earthquakes near Polk County

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

Aftershocks so far

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

  1. 2.9 62 km W of Yachats, Oregon
  2. 2.0 47 km WNW of Barview, Oregon
  3. 2.2 32 km W of Yachats, Oregon
  4. 2.1 71 km W of Yachats, Oregon
  5. 2.1 21 km NW of Winchester Bay, Oregon
  6. 2.5 71 km W of Yachats, Oregon
  7. 1.7 37 km W of Yachats, Oregon
  8. 1.9 51 km W of Yachats, Oregon
  9. 2.2 71 km W of Yachats, Oregon
  10. 2.0 72 km WNW of Barview, Oregon
  11. 1.7 72 km W of Yachats, Oregon
  12. 1.7 71 km W of Dunes City, Oregon
  13. 1.8 63 km W of Winchester Bay, Oregon
  14. 1.8 71 km W of Yachats, Oregon
  15. 1.7 41 km WNW of Yachats, 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.