QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

Earthquake near Huntington Park, CA

No earthquake was likely felt in Huntington Park in the 24 hours to 12:06 am PST (08:06 UTC). The last one was M 3.2, 22 km (14 mi) S, at 12:44 am PDT on 9 October 2026, estimated intensity II (weak) in town; 1,090 felt reports to USGS. Every earthquake near Huntington Park

This page: a magnitude 2.5 earthquake was recorded 3 km (2 mi) north of Huntington Park, CA, at 6:07 am PDT on 17 March 2018 (13:07 UTC), 7.5 km deep. 87 people have reported feeling it to USGS.

USGS: 3km N of Huntington Park, CA

18 km (11 mi) E of Los Angeles, CA · in Huntington Park, CA

6:07 am PDT, Mar 17, 2018 · · 7.5 km deep · released about 160 lb of TNT

10 km30 km60 km120 km N Los Angeles County 21 kmOrange County 55 kmVentura County 92 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
6:07 am PDT on 17 March 2018 ()
Where
3 km (2 mi) north of Huntington Park, CA · earthquakes near Huntington Park
Magnitude
M 2.5 (ml)
Depth
7.5 km below the surface
Felt
87 reports · strongest reported intensity IV
Nearest
Los Angeles County, 21 km N
Nearest mapped fault
Puente Hills blind thrust system, 4 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 3031 days ago

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

At this magnitude and depth, people at rest would likely notice it out to about 21 km (13 mi) from the epicentre. In Huntington Park, 3 km away, the estimate is intensity III (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: Huntington Park 3 km, intensity III · Maywood 4 km, intensity III · East Los Angeles 5 km, intensity III · Bell 5 km, intensity III · Los Angeles 5 km, intensity III · Florence-Graham 5 km, intensity III · South Gate 6 km, intensity III · Bell Gardens 8 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 160 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 95,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 68,000× the energy of this one
  3. Around the size people start to feel M 3.0 6× the energy of this one
  4. This earthquake M 2.5 about 160 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 22 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.7 Northridge, California, earthquake · 37 km NW of this epicentre
  2. 6.6 1971 San Fernando Earthquake, California · 47 km NNW of this epicentre
  3. 6.4 The 1933 Long Beach, California Earthquake · 47 km SSE of this epicentre
  4. 5.9 The 1987 Whittier Narrows, California Earthquake · 14 km ENE of this epicentre
  5. 5.9 1km ENE of Granada Hills, California · 39 km NW 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 34.0110, -118.2207. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Los Angeles County, CA 21 km (13 mi) N earthquakes near Los Angeles County
Orange County, CA 55 km (34 mi) SE earthquakes near Orange County
Ventura County, CA 92 km (57 mi) WNW earthquakes near Ventura County

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

Aftershocks so far

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

  1. 2.3 3km SSE of Charter Oak, CA
  2. 1.6 1km SSE of Placentia, CA
  3. 2.6 3km SSW of Signal Hill, CA
  4. 1.9 2km WSW of Yorba Linda, CA
  5. 1.5 17km NNE of Glendora, CA
  6. 1.5 17km NNE of Glendora, CA
  7. 1.7 4km WNW of Chatsworth, CA
  8. 1.5 4km SE of Rancho Palos Verdes, CA
  9. 1.6 0km ENE of Universal City, CA
  10. 1.6 12km SW of Marina del Rey, CA
  11. 2.9 2km S of Buena Park, CA
  12. 1.9 3km NE of Chatsworth, CA
  13. 2.0 4km SSW of Baldwin Hills, CA
  14. 1.6 3km N of Pacoima, CA
  15. 1.8 1km NNW of Rolling Hills Estates, 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.