QuakeIndex

Earthquake · reviewed by a seismologist

M 4.5ml

3 km NNE of Port Orford, Oregon

· 17 km deep · released about 94 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Curry County 41 kmCoos County 55 kmJosephine County 86 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 4.5 (ml)
Depth
17 km below the surface
Felt
517 reports · strongest reported intensity V
Measured shaking
intensity V (ShakeMap)
USGS impact alert
green
Tsunami
USGS flagged this event for tsunami evaluation. Follow tsunami.gov for official messages.
Nearest
Curry County, 41 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2413 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 517 people have reported feeling it to USGS.

How big was it?

This earthquake released about 94 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 1,800× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 80× the energy of this one
  3. Magna, Utah 2020 M 5.7 57× the energy of this one
  4. This earthquake M 4.5 about 94 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 200× 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.

Where

Epicentre 42.7760, -124.4767. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Curry County, OR 41 km (25 mi) NNW of here earthquakes near Curry County
Coos County, OR 55 km (34 mi) SW of here earthquakes near Coos County
Josephine County, OR 86 km (53 mi) WNW of here earthquakes near Josephine County
Del Norte County, CA 121 km (75 mi) NNW of here earthquakes near Del Norte County
Douglas County, OR 122 km (76 mi) WSW of here earthquakes near Douglas County

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

Aftershocks so far

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

  1. 2.5 42 km W of Port Orford, Oregon
  2. 1.7 12 km SSE of Port Orford, Oregon
  3. 2.6 10 km NW of Langlois, Oregon
  4. 1.5 15 km ESE of Myrtle Point, Oregon
  5. 2.1 11 km S of Port Orford, Oregon
  6. 1.9 12 km NW of Nesika Beach, Oregon
  7. 2.4 12 km SSE of Port Orford, Oregon
  8. 2.6 11 km SSE of Port Orford, Oregon
  9. 3.1 12 km SSE of Port Orford, Oregon
  10. 1.7 11 km SSE of Port Orford, Oregon
  11. 1.5 6 km SE of Gold Beach, Oregon
  12. 2.4 6 km NE of Bandon, Oregon
  13. 1.6 14 km NW of Nesika Beach, Oregon
  14. 1.5 40 km WNW of Port Orford, Oregon
  15. 2.0 21 km WSW 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.