QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

Earthquake near Long Beach, CA

No earthquake was likely felt in Long Beach in the 24 hours to 6:21 am PST (14:21 UTC). The last one was M 1.7, 10 km (6 mi) SSW, at 3:16 am PDT on 16 October 2026, estimated intensity II (weak) in town. Every earthquake near Long Beach

This page: a magnitude 2.6 earthquake was recorded 22 km (14 mi) south-southwest of Long Beach, CA, at 4:08 am PST on 13 February 2021 (12:08 UTC), 1.9 km deep. 16 people have reported feeling it to USGS.

USGS: 17km S of San Pedro, CA

49 km (31 mi) SSE of Los Angeles, CA · 25 km (15 mi) SSW of Long Beach, CA

4:08 am PST, Feb 13, 2021 · · 1.9 km deep · released about 260 lb of TNT

Every earthquake near Long Beach Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Orange County 49 kmLos Angeles County 68 kmVentura County 116 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
4:08 am PST on 13 February 2021 ()
Where
22 km (14 mi) south-southwest of Long Beach, CA · earthquakes near Long Beach
Magnitude
M 2.6 (ml)
Depth
1.9 km below the surface
Felt
16 reports · strongest reported intensity IV
Nearest
Orange County, 49 km ENE
Nearest mapped fault
San Pedro Basin fault, 10 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1822 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 24 km (15 mi) from the epicentre. In Long Beach, 22 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Likely felt in: Rancho Palos Verdes 20 km, intensity II · Long Beach 22 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 260 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 59,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 42,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.7× the energy of this one
  4. This earthquake M 2.6 about 260 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.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 6 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.4 The 1933 Long Beach, California Earthquake · 28 km E of this epicentre
  2. 5.3 2 km SSW of Santa Monica, California · 50 km NNW of this epicentre
  3. 5.3 7km W of Newport Beach, CA · 27 km E of this epicentre
  4. 5.1 The 1941 Torrance-Gardena, California Earthquakes (Second Event) · 23 km N of this epicentre
  5. 5.0 2km ENE of Westminster, CA · 35 km NE of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 33.5852, -118.2930. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Orange County, CA 49 km (30 mi) ENE earthquakes near Orange County
Los Angeles County, CA 68 km (42 mi) N earthquakes near Los Angeles County
Ventura County, CA 116 km (72 mi) NW earthquakes near Ventura County

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

Aftershocks so far

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

  1. 2.1 1km SSW of Inglewood, CA
  2. 2.3 1km NE of Lennox, CA
  3. 1.6 2km NW of Lennox, CA
  4. 1.6 2km WSW of Inglewood, CA
  5. 2.3 0km ENE of Lennox, CA
  6. 1.7 0km W of Lennox, CA
  7. 1.6 1km S of Inglewood, CA
  8. 1.9 2km E of Lennox, CA
  9. 1.8 2km ESE of Inglewood, CA
  10. 1.6 1km ENE of Inglewood, CA
  11. 2.0 1km SE of Lennox, CA
  12. 1.9 1km SW of Inglewood, CA
  13. 1.7 0km NW of Lennox, CA
  14. 1.6 1km NNE of Lennox, CA
  15. 1.6 1km SW of Inglewood, 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.