QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

Earthquake near Home Garden, CA

No earthquake was likely felt in Home Garden in the 24 hours to 3:50 pm PST (23:50 UTC). The last one was M 3.3, 35 km (22 mi) SW, at 6:21 am PDT on 4 August 2026, estimated intensity II (weak) in town; 2 felt reports to USGS. Every earthquake near Home Garden

This page: a magnitude 1.8 earthquake was recorded 10 km (6 mi) southeast of Home Garden, CA, at 6:21 pm PDT on 9 August 2021 (01:21 UTC), 21 km deep.

USGS: 10km SE of Home Garden, CA

13 km (8 mi) SE of Hanford, CA · 64 km (40 mi) SSE of Fresno, CA

6:21 pm PDT, Aug 9, 2021 · · 21 km deep · released about 13 lb of TNT

10 km30 km60 km120 km N Kings County 30 kmFresno County 59 kmTulare County 70 kmMadera County 109 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
6:21 pm PDT on 9 August 2021 ()
Where
10 km (6 mi) southeast of Home Garden, CA · earthquakes near Home Garden
Magnitude
M 1.8 (md)
Depth
21 km below the surface
Felt
no reports yet
Nearest
Kings County, 30 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1918 days ago

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

At this magnitude and depth it was probably too small to be felt, even directly above it. In Home Garden, 10 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: Hanford, Corcoran, Armona, Goshen, Lucerne, Tulare.

How big was it?

This earthquake released about 13 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 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 840,000× the energy of this one
  3. Around the size people start to feel M 3.0 75× the energy of this one
  4. This earthquake M 1.8 about 13 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 since 1900 lists no earthquake of M5 or more within 50 km.

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 36.2388, -119.5590. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kings County, CA 30 km (18 mi) SW earthquakes near Kings County
Fresno County, CA 59 km (36 mi) N earthquakes near Fresno County
Tulare County, CA 70 km (43 mi) E earthquakes near Tulare County
Madera County, CA 109 km (68 mi) N earthquakes near Madera County
San Luis Obispo County, CA 124 km (77 mi) SW earthquakes near San Luis Obispo County
Kern County, CA 124 km (77 mi) SE earthquakes near Kern County

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

Aftershocks so far

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

  1. 2.0 11km S of Home Garden, CA
  2. 1.8 11km ENE of Kettleman City, CA
  3. 1.7 22km SE of Kettleman City, CA
  4. 2.1 16km SE of Kettleman City, CA
  5. 2.2 12km ESE of Huron, CA
  6. 1.9 12km NNW of Kettleman City, CA
  7. 1.9 7km WNW of Kettleman City, CA
  8. 2.4 5km S of Lanare, CA
  9. 2.3 9km SW of Corcoran, CA
  10. 1.7 8km N of Kettleman City, CA
  11. 1.8 21km SSE of Kettleman City, CA
  12. 1.7 12km N of Huron, CA
  13. 1.8 9km SSE of Huron, CA
  14. 2.3 17km SW of Corcoran, CA
  15. 1.7 8km SSE of Kettleman City, 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.