Earthquake near Maricopa, CA

A magnitude 1.0 earthquake was recorded 14 km (9 mi) S of Maricopa, CA, at 7:33 am PDT on 28 September 2026 (14:33 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: South Taft, Taft Heights, Taft, Ford City, Pine Mountain Club.

How big was it?

This earthquake released about 0.99 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.0 would have released about 32 times as much.

1. Mineral, Virginia 2011 M 5.8 15,000,000× the energy of this one
2. Magna, Utah 2020 M 5.7 11,000,000× the energy of this one
3. Around the size people start to feel M 3.0 970× the energy of this one
4. This earthquake M 1.0 about 0.99 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 5.2 on 2024-08-07 — about 2,100,000 times the energy of this one.

Before 2016, the USGS record lists 15 earthquakes of M5 or more within 50 km; the five largest:

1. 7.5 The 1952 Kern County, California Earthquake · 39 km E of this epicentre Jul 21, 1952
2. 6.0 Tejon Pass, California · 48 km E of this epicentre Oct 23, 1916
3. 5.8 13km WNW of Grapevine, CA · 33 km E of this epicentre Jul 21, 1952
4. 5.5 Southwest of Tejon Pass, California · 47 km ESE of this epicentre Oct 23, 1916
5. 5.5 10 km NE of Toro Canyon, California · 48 km S of this epicentre Jun 29, 1926

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 34.9312, -119.4273. Map © OpenStreetMap contributors.

Nearby places

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

Aftershocks so far

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

1. 1.1 24 km SW of Pine Mountain Club, CA 17:14 UTC
2. 1.0 24 km SW of Pine Mountain Club, CA 20:52 UTC
3. 1.1 24 km SW of Pine Mountain Club, CA 15:39 UTC
4. 1.5 25 km SW of Maricopa, CA 01:54 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 01:35 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

Revisions

USGS refines a solution as more stations report. Every change we have seen is listed here.

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.