QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

10km NE of Santa Ynez, CA

· 2.1 km deep · released about 190 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Santa Barbara County 16 kmVentura County 87 kmSan Luis Obispo County 89 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 2.5 (ml)
Depth
2.1 km below the surface
Felt
11 reports · strongest reported intensity III
Nearest
Santa Barbara County, 16 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2985 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 11 people have reported feeling it to USGS.

How big was it?

This earthquake released about 190 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 80,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 57,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.1× the energy of this one
  4. This earthquake M 2.5 about 190 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 34.6788, -119.9998. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Santa Barbara County, CA 16 km (10 mi) NNE of here earthquakes near Santa Barbara County
Ventura County, CA 87 km (54 mi) WNW of here earthquakes near Ventura County
San Luis Obispo County, CA 89 km (55 mi) SSE of here earthquakes near San Luis Obispo County
Kern County, CA 137 km (85 mi) WSW of here earthquakes near Kern County

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

Aftershocks so far

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

  1. 1.5 6km WSW of Isla Vista, CA
  2. 1.7 9km SSE of Santa Ynez, CA
  3. 2.0 30km NNE of Montecito, CA
  4. 2.2 7km ENE of Los Olivos, CA
  5. 2.2 7km ENE of Los Olivos, CA
  6. 1.7 29km WSW of Maricopa, CA
  7. 1.8 28km WSW of Maricopa, CA
  8. 1.7 5km W of Isla Vista, CA
  9. 1.9 6km W of Isla Vista, CA
  10. 1.7 18km W of Isla Vista, CA
  11. 2.1 12km E of Orcutt, CA
  12. 2.5 11km E of Orcutt, CA
  13. 2.1 11km E of Orcutt, CA
  14. 1.6 8km E of Vandenberg Village, CA
  15. 1.7 14km N of Los Olivos, 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 4.1 on 2017-05-17 — it released about 200 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.