QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

10km NNE of Pala, CA

· 15 km deep · released about 8.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Diego County 52 kmOrange County 74 kmRiverside 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 1.6 (ml)
Depth
15 km below the surface
Felt
no reports yet
Nearest
San Diego County, 52 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3421 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 8.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,300,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 8.4 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 33.4438, -117.0282. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Diego County, CA 52 km (32 mi) NNW of here earthquakes near San Diego County
Orange County, CA 74 km (46 mi) ESE of here earthquakes near Orange County
Riverside County, CA 100 km (62 mi) WSW of here earthquakes near Riverside County
Los Angeles County, CA 141 km (88 mi) SE of here earthquakes near Los Angeles 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. 2.2 5km NE of Anza, CA
  2. 2.5 10km ENE of Aguanga, CA
  3. 1.9 3km W of Aguanga, CA
  4. 1.6 8km NE of Aguanga, CA
  5. 2.1 0 km SSW of Mountain Center, California
  6. 2.6 2 km NW of San Jacinto, California
  7. 1.7 0 km S of Mountain Center, California
  8. 2.1 0 km SSW of Mountain Center, California
  9. 2.2 0 km SSW of Mountain Center, California
  10. 1.6 9 km NE of Aguanga, California
  11. 1.6 8 km SSE of Mountain Center, California
  12. 2.1 10 km ENE of Aguanga, California
  13. 2.1 10 km ENE of Aguanga, California
  14. 2.2 7 km NE of Aguanga, California
  15. 2.3 3 km E of Lakeview, California

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.