Earthquake · reviewed by a seismologist
M 2.1md
Earthquake near Stratford, CA
No earthquake was likely felt in Stratford in the 24 hours to 3:16 pm PST (23:16 UTC). The last one was M 1.8, 8 km (5 mi) SW, at 7:37 am PDT on 6 August 2026, estimated intensity II (weak) in town. Every earthquake near Stratford
This page: a magnitude 2.1 earthquake was recorded 15 km (9 mi) south-southeast of Stratford, CA, at 10:38 pm PDT on 26 July 2023 (05:38 UTC), 17 km deep.
USGS: 15 km SSE of Stratford, CA
79 km (49 mi) S of Fresno, CA · 29 km (18 mi) SSW of Hanford, CA
- When
- 10:38 pm PDT on 26 July 2023 ()
- Where
- 15 km (9 mi) south-southeast of Stratford, CA · earthquakes near Stratford
- Magnitude
- M 2.1 (md)
- Depth
- 17 km below the surface
- Felt
- no reports yet
- Nearest
- Kings County, 7 km W
- Nearest mapped fault
- Great Valley thrust fault system, 18 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 1206 days ago
Earthquake alerts for Stratford, CA
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
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 3 km (2 mi) from the epicentre. In Stratford, 15 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: Corcoran, Kettleman City, Lemoore, Lemoore Station, Armona, Home Garden.
How big was it?
This earthquake released about 46 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 330,000× the energy of this one
- Magna, Utah 2020 M 5.7 230,000× the energy of this one
- Around the size people start to feel M 3.0 21× the energy of this one
- This earthquake M 2.1 about 46 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 660 times the energy of this one.
Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:
- 5.6 8 km SW of Huron, California · 38 km WNW 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 36.0732, -119.7365. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Kings County, CA | 7 km (4 mi) | W | earthquakes near Kings County |
| Fresno County, CA | 77 km (48 mi) | N | earthquakes near Fresno County |
| Tulare County, CA | 88 km (54 mi) | ENE | earthquakes near Tulare County |
| San Luis Obispo County, CA | 100 km (62 mi) | SW | earthquakes near San Luis Obispo County |
| Kern County, CA | 122 km (76 mi) | SE | earthquakes near Kern County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
53 earthquakes have been recorded within 50 km since this one.
- 1.7 6 km NNE of Avenal, CA
- 1.9 4 km SE of Kettleman City, CA
- 1.5 10 km SE of Huron, CA
- 1.6 2 km NE of Huron, CA
- 2.3 7 km SW of Home Garden, CA
- 2.8 6 km SW of Home Garden, CA
- 1.5 6 km NW of Kettleman City, CA
- 2.0 1 km WNW of Kettleman City, CA
- 2.6 2 km SSE of Kettleman City, CA
- 1.7 13 km SW of Huron, CA
- 1.7 7 km NW of Avenal, CA
- 1.6 12 km SW of Huron, CA
- 2.5 15 km SW of Corcoran, CA
- 2.3 4 km SW of Home Garden, CA
- 2.3 8 km N 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.