QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

Earthquake near King City, CA

No earthquake was likely felt in King City in the 24 hours to 10:07 am PST (18:07 UTC). The last one was M 2.5, 14 km (8 mi) E, at 4:39 pm PDT on 29 September 2026, estimated intensity II (weak) in town. Every earthquake near King City

This page: a magnitude 2.0 earthquake was recorded 27 km (16 mi) east-northeast of King City, CA, at 4:35 pm PDT on 4 May 2018 (23:35 UTC), 9.5 km deep.

USGS: 21km SW of New Idria, CA

4:35 pm PDT, May 4, 2018 · · 9.5 km deep · released about 33 lb of TNT

10 km30 km60 km120 km N San Benito County 41 kmMonterey County 42 kmKings County 96 kmMerced County 101 kmSan Luis Obispo County 107 kmFresno 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
4:35 pm PDT on 4 May 2018 ()
Where
27 km (16 mi) east-northeast of King City, CA · earthquakes near King City
Magnitude
M 2.0 (md)
Depth
9.5 km below the surface
Felt
no reports yet
Nearest
San Benito County, 41 km NNW
Nearest mapped fault
San Andreas fault, 2 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 3111 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 13 km (8 mi) from the epicentre. In King City, 27 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.

How big was it?

This earthquake released about 33 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 450,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 320,000× the energy of this one
  3. Around the size people start to feel M 3.0 29× the energy of this one
  4. This earthquake M 2.0 about 33 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 19 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.7 The 1983 Coalinga, California Earthquake · 48 km E of this epicentre
  2. 6.4 1901 Parkfield, California Earthquake · 45 km SE of this epicentre
  3. 6.1 Northwest of Huron, California · 32 km NE of this epicentre
  4. 5.8 29 km NE of San Lucas, California · 7 km E of this epicentre
  5. 5.4 22 km SSW of Three Rocks, California · 31 km E 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 36.2925, -120.8473. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
San Benito County, CA 41 km (26 mi) NNW earthquakes near San Benito County
Monterey County, CA 42 km (26 mi) W earthquakes near Monterey County
Kings County, CA 96 km (60 mi) ESE earthquakes near Kings County
Merced County, CA 101 km (63 mi) N earthquakes near Merced County
San Luis Obispo County, CA 107 km (66 mi) SSE earthquakes near San Luis Obispo County
Fresno County, CA 119 km (74 mi) ENE earthquakes near Fresno 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. 1.6 6km NNE of Pinnacles, CA
  2. 1.9 12km SE of Pinnacles, CA
  3. 1.8 7km SE of Pinnacles, CA
  4. 2.6 6km ENE of Pinnacles, CA
  5. 1.6 10km NW of Pinnacles, CA
  6. 3.1 15km ESE of Pinnacles, CA
  7. 1.5 22km NE of San Lucas, CA
  8. 1.7 22km ENE of San Lucas, CA
  9. 1.5 22km ENE of San Lucas, CA
  10. 1.5 6km SSW of San Ardo, CA
  11. 1.6 7km NNE of Coalinga, CA
  12. 2.8 25km WNW of Coalinga, CA
  13. 1.7 17km SE of Pinnacles, CA
  14. 1.7 20km SW of New Idria, CA
  15. 1.5 22km NE of San Ardo, 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.