QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

11km WSW of Garnet, CA

· 12 km deep · released about 18 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Riverside County 62 kmSan Diego County 94 kmOrange County 106 kmSan Bernardino County 119 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
12 km below the surface
Felt
no reports yet
Nearest
Riverside County, 62 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2327 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 18 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 5.8 840,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 600,000× the energy of this one
  3. Around the size people start to feel M 3.0 53× the energy of this one
  4. This earthquake M 1.9 about 18 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 33.8635, -116.6570. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Riverside County, CA 62 km (39 mi) WNW of here earthquakes near Riverside County
San Diego County, CA 94 km (58 mi) N of here earthquakes near San Diego County
Orange County, CA 106 km (66 mi) ENE of here earthquakes near Orange County
San Bernardino County, CA 119 km (74 mi) SSW of here earthquakes near San Bernardino County

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

Aftershocks so far

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

  1. 1.6 13km W of Anza, CA
  2. 1.6 8km NNE of Banning, CA
  3. 1.6 7km SSW of Idyllwild, CA
  4. 1.6 14km ESE of Anza, CA
  5. 1.5 8km NNE of Yucaipa, CA
  6. 1.7 10km NE of Aguanga, CA
  7. 1.9 12km W of Anza, CA
  8. 1.6 5km SW of Idyllwild, CA
  9. 1.9 16 km N of Yucca Valley, CA
  10. 1.6 11km SSW of Idyllwild, CA
  11. 1.9 10 km NNW of Cabazon, CA
  12. 1.6 3 km W of Banning, CA
  13. 3.0 16km N of Yucca Valley, CA
  14. 2.4 21km ESE of Anza, CA
  15. 2.1 8km NE of Aguanga, 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 4.9 on 2020-04-04 — it released about 34,000 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.