QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

5km ENE of Borrego Springs, CA

· 13 km deep · released about 24 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Diego County 50 kmRiverside County 59 kmImperial County 94 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 1.9 (ml)
Depth
13 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
San Diego County, 50 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2566 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 24 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 640,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 450,000× the energy of this one
  3. Around the size people start to feel M 3.0 40× the energy of this one
  4. This earthquake M 1.9 about 24 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 33.2713, -116.3297. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Diego County, CA 50 km (31 mi) ENE of here earthquakes near San Diego County
Riverside County, CA 59 km (37 mi) SSW of here earthquakes near Riverside County
Imperial County, CA 94 km (59 mi) WNW of here earthquakes near Imperial 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 9km E of Julian, CA
  2. 1.9 12km NE of Borrego Springs, CA
  3. 1.8 12km NE of Borrego Springs, CA
  4. 1.6 3km SSE of Lake Henshaw, CA
  5. 1.8 13km N of Ocotillo Wells, CA
  6. 2.4 15km E of Ocotillo Wells, CA
  7. 1.6 12km ENE of Borrego Springs, CA
  8. 1.9 22km ESE of Ocotillo Wells, CA
  9. 1.6 7km NW of Borrego Springs, CA
  10. 1.6 13km ENE of Borrego Springs, CA
  11. 2.0 12km ENE of Borrego Springs, CA
  12. 1.8 7km ENE of Palomar Observatory, CA
  13. 3.0 8km NNW of Borrego Springs, CA
  14. 1.6 11km NE of Julian, CA
  15. 2.4 9km ENE of Borrego Springs, 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 5.2 on 2016-06-10 — it released about 78,000 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.