QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

Earthquake near Lemoore Station, CA

No earthquake was likely felt in Lemoore Station in the 24 hours to 8:54 am PST (16:54 UTC). The last one was M 2.2, 16 km (10 mi) SW, at 2:35 am PDT on 16 September 2026, estimated intensity II (weak) in town. Every earthquake near Lemoore Station

This page: a magnitude 1.8 earthquake was recorded 8 km (5 mi) southwest of Lemoore Station, CA, at 1:35 pm PDT on 17 May 2023 (20:35 UTC), 2.5 km deep.

USGS: 8km SW of Lemoore Station, CA

66 km (41 mi) SSW of Fresno, CA · 31 km (19 mi) WSW of Hanford, CA

1:35 pm PDT, May 17, 2023 · · 2.5 km deep · released about 14 lb of TNT

10 km30 km60 km120 km N Kings County 20 kmFresno County 68 kmSan Luis Obispo County 101 kmTulare County 106 kmSan Benito County 110 kmMadera County 113 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
1:35 pm PDT on 17 May 2023 ()
Where
8 km (5 mi) southwest of Lemoore Station, CA · earthquakes near Lemoore Station
Magnitude
M 1.8 (md)
Depth
2.5 km below the surface
Felt
no reports yet
Nearest
Kings County, 20 km SE
Nearest mapped fault
Great Valley thrust fault system, 15 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 1275 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 Lemoore Station, 8 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: Huron 13 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 790,000× the energy of this one
  3. Around the size people start to feel M 3.0 70× the energy of this one
  4. This earthquake M 1.8 about 14 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

The largest earthquake within 50 km since 2016 was M 4.0 on 2018-11-27 — about 2,200 times the energy of this one.

Before 2016, the USGS record lists 9 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.7 The 1983 Coalinga, California Earthquake · 32 km W of this epicentre
  2. 5.6 8 km SW of Huron, California · 19 km WSW of this epicentre
  3. 5.5 11 km NNE of Coalinga, California · 30 km W of this epicentre
  4. 5.5 11 km NE of Coalinga, California · 29 km W of this epicentre
  5. 5.4 11 km NNW of Coalinga, California · 41 km W 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 36.2037, -119.9623. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kings County, CA 20 km (12 mi) SE earthquakes near Kings County
Fresno County, CA 68 km (42 mi) NNE earthquakes near Fresno County
San Luis Obispo County, CA 101 km (63 mi) SSW earthquakes near San Luis Obispo County
Tulare County, CA 106 km (66 mi) E earthquakes near Tulare County
San Benito County, CA 110 km (69 mi) WNW earthquakes near San Benito County
Madera County, CA 113 km (71 mi) N earthquakes near Madera County

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

Aftershocks so far

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

  1. 1.5 7 km S of Cantua Creek, CA
  2. 2.2 15 km NNW of Coalinga, CA
  3. 1.6 8 km NW of Kettleman City, CA
  4. 1.7 8 km NNW of Avenal, CA
  5. 1.6 12 km SW of Huron, CA
  6. 1.9 15 km N of Coalinga, CA
  7. 1.7 2 km E of Kettleman City, CA
  8. 1.6 10 km W of Huron, CA
  9. 1.7 2 km S of Avenal, CA
  10. 1.9 2 km SE of Avenal, CA
  11. 2.9 2 km SSE of Avenal, CA
  12. 1.7 16 km NNW of Coalinga, CA
  13. 1.9 20 km NNE of Coalinga, CA
  14. 2.5 10 km SSW of Cantua Creek, CA
  15. 2.0 2 km ESE of Cantua Creek, 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.