QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

21km S of Port Hueneme, CA

· 11 km deep · released about 320 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ventura County 45 kmLos Angeles County 90 kmSanta Barbara County 100 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 2.7 (ml)
Depth
11 km below the surface
Felt
6 reports · strongest reported intensity III
Nearest
Ventura County, 45 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2169 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 6 people have reported feeling it to USGS.

How big was it?

This earthquake released about 320 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 48,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 34,000× the energy of this one
  3. Around the size people start to feel M 3.0 3× the energy of this one
  4. This earthquake M 2.7 about 320 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 33.9613, -119.1975. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ventura County, CA 45 km (28 mi) S of here earthquakes near Ventura County
Los Angeles County, CA 90 km (56 mi) WSW of here earthquakes near Los Angeles County
Santa Barbara County, CA 100 km (62 mi) SE of here earthquakes near Santa Barbara County

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

Aftershocks so far

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

  1. 2.1 6km SSW of Agoura Hills, CA
  2. 1.7 7km WSW of Malibu, CA
  3. 1.8 15km WNW of Malibu, CA
  4. 1.8 1km ESE of Malibu, CA
  5. 2.2 2km NE of Malibu, CA
  6. 1.9 3km SSE of Malibu, CA
  7. 1.8 6km NE of Malibu, CA
  8. 1.7 10km SSE of Ojai, CA
  9. 1.7 21km SE of Santa Cruz Is. (E end), CA
  10. 2.4 9km WSW of Malibu, CA
  11. 1.6 6km NE of Ventura, CA
  12. 1.7 2km S of Malibu, CA
  13. 1.7 9km ENE of Ventura, CA
  14. 1.5 6km WSW of Santa Paula, CA
  15. 2.1 6km WSW of Santa Paula, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.0 on 2020-01-02 — it released about 110 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.