QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

3km SSW of Signal Hill, CA

· 12 km deep · released about 220 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Orange County 39 kmLos Angeles County 47 kmVentura 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 2.6 (ml)
Depth
12 km below the surface
Felt
877 reports · strongest reported intensity IV
Nearest
Orange County, 39 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2951 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 877 people have reported feeling it to USGS.

How big was it?

This earthquake released about 220 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 68,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 48,000× the energy of this one
  3. Around the size people start to feel M 3.0 4.3× the energy of this one
  4. This earthquake M 2.6 about 220 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 33.7778, -118.1800. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Orange County, CA 39 km (24 mi) WNW of here earthquakes near Orange County
Los Angeles County, CA 47 km (29 mi) S of here earthquakes near Los Angeles County
Ventura County, CA 109 km (68 mi) SE of here earthquakes near Ventura County

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

Aftershocks so far

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

  1. 2.1 1km E of Santa Monica, CA
  2. 1.9 9km SW of Newport Beach, CA
  3. 1.9 10km SW of Newport Beach, CA
  4. 2.1 9km SW of Newport Beach, CA
  5. 1.7 3km N of View Park-Windsor Hills, CA
  6. 1.6 2km WSW of Santa Monica, CA
  7. 1.5 3km WSW of Willowbrook, CA
  8. 2.3 3km W of San Pedro, CA
  9. 1.6 1km ESE of Maywood, CA
  10. 1.7 1km SSW of Gardena, CA
  11. 2.1 8km W of Newport Beach, CA
  12. 2.4 7km W of Newport Beach, CA
  13. 2.1 9km ENE of North Tustin, CA
  14. 1.8 8km E of Yorba Linda, CA
  15. 2.0 1km NW of Hawthorne, CA

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.