QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

15km N of Simmler, CA

· 9.9 km deep · released about 290 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Luis Obispo County 41 kmKings County 68 kmSanta Barbara County 105 kmKern County 118 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
9.9 km below the surface
Felt
3 reports · strongest reported intensity II
Nearest
San Luis Obispo County, 41 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2644 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 290 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 51,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 36,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.2× the energy of this one
  4. This earthquake M 2.7 about 290 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 35.4838, -120.0172. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Luis Obispo County, CA 41 km (25 mi) ENE of here earthquakes near San Luis Obispo County
Kings County, CA 68 km (42 mi) SSW of here earthquakes near Kings County
Santa Barbara County, CA 105 km (65 mi) N of here earthquakes near Santa Barbara County
Kern County, CA 118 km (73 mi) W of here earthquakes near Kern County
Tulare County, CA 139 km (86 mi) SW of here earthquakes near Tulare County
Monterey County, CA 144 km (90 mi) SE of here earthquakes near Monterey County

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

Aftershocks so far

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

  1. 1.7 10km SSE of Parkfield, CA
  2. 1.9 10km SSE of Parkfield, CA
  3. 2.5 15km SSW of Kettleman City, CA
  4. 1.8 22km SSE of Kettleman City, CA
  5. 1.7 16km SSE of Kettleman City, CA
  6. 2.1 8km NNW of Cholame, CA
  7. 1.8 2km E of Cholame, CA
  8. 2.5 17km SSE of Kettleman City, CA
  9. 1.8 16km S of Kettleman City, CA
  10. 1.7 16km S of Kettleman City, CA
  11. 2.6 28km WNW of Buttonwillow, CA
  12. 2.2 28km WNW of Buttonwillow, CA
  13. 1.9 20km NE of Arroyo Grande, CA
  14. 1.8 25km WNW of Buttonwillow, CA
  15. 1.8 28km WNW of Buttonwillow, 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.