QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

Earthquake near Fresno, CA

No earthquake was likely felt in Fresno in the 24 hours to 1:18 am PST (09:18 UTC). The last one was M 1.8, 8 km (5 mi) ESE, at 8:23 am PST on 27 February 2025, estimated intensity II (weak) in town. Every earthquake near Fresno

This page: a magnitude 2.3 earthquake was recorded 35 km (22 mi) south-southwest of Fresno, CA, at 5:17 pm PDT on 9 May 2019 (00:17 UTC), 13 km deep. 2 people have reported feeling it to USGS.

USGS: 2km N of Lanare, CA

38 km (24 mi) SSW of Fresno, CA · 29 km (18 mi) WNW of Hanford, CA

5:17 pm PDT, May 9, 2019 · · 13 km deep · released about 77 lb of TNT

10 km30 km60 km120 km N Fresno County 42 kmKings County 44 kmMadera County 85 kmSan Benito County 105 kmTulare County 106 kmMerced County 108 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
5:17 pm PDT on 9 May 2019 ()
Where
35 km (22 mi) south-southwest of Fresno, CA · earthquakes near Fresno
Magnitude
M 2.3 (md)
Depth
13 km below the surface
Felt
2 reports · strongest reported intensity IV
Nearest
Fresno County, 42 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2743 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 14 km (9 mi) from the epicentre. In Fresno, 35 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.

Earthquakes near other towns within 30 km: Riverdale, Caruthers, Lemoore Station, Lemoore, Laton, Easton.

How big was it?

This earthquake released about 77 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 140,000× the energy of this one
  3. Around the size people start to feel M 3.0 12× the energy of this one
  4. This earthquake M 2.3 about 77 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 390 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 · 42 km SW of this epicentre
  2. 5.6 8 km SW of Huron, California · 41 km SSW of this epicentre
  3. 5.5 11 km NNE of Coalinga, California · 41 km SW of this epicentre
  4. 5.5 11 km NE of Coalinga, California · 41 km SW of this epicentre
  5. 5.4 11 km NNW of Coalinga, California · 50 km WSW 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 36.4592, -119.9313. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Fresno County, CA 42 km (26 mi) NE earthquakes near Fresno County
Kings County, CA 44 km (27 mi) SSE earthquakes near Kings County
Madera County, CA 85 km (53 mi) N earthquakes near Madera County
San Benito County, CA 105 km (65 mi) W earthquakes near San Benito County
Tulare County, CA 106 km (66 mi) ESE earthquakes near Tulare County
Merced County, CA 108 km (67 mi) NW earthquakes near Merced County

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

Aftershocks so far

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

  1. 1.9 5km ESE of Huron, CA
  2. 1.7 12km ENE of Coalinga, CA
  3. 1.6 11km NW of Avenal, CA
  4. 1.7 12km NNW of Avenal, CA
  5. 1.9 11km NNW of Kettleman City, CA
  6. 1.5 12km W of Huron, CA
  7. 2.2 13km WNW of Huron, CA
  8. 2.4 7km NNW of Biola, CA
  9. 2.5 6km N of Biola, CA
  10. 1.6 6km N of Avenal, CA
  11. 3.1 10km NW of Avenal, CA
  12. 2.0 14km NNE of Coalinga, CA
  13. 1.6 11km NW of Avenal, CA
  14. 1.6 11km NW of Avenal, CA
  15. 2.6 9km NW of Avenal, 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.