California, United States – Earthquakes

This page summarizes earthquakes in California (United States). The most recently recorded event was a magnitude M0.9 earthquake near Castle Rock Springs on 2026-09-14 06:34:09 UTC. All event lists and map markers are limited to the last 30 days.

Seismic profile ↓
Earthquakes (last 30 days)
3046
Max magnitude (last 30 days)
M4.1
Avg magnitude (last 30 days)
M1.27
Avg depth (last 30 days)
7 km

Seismic profile

Analysis period14 Sep 2025 – 14 Sep 2026Data as of: 14 Sep 2026 · 08:00 UTC
Minimum magnitude

What the data show

California · M ≥ 2.0

After source reconciliation, the catalogue contains 1,526 event entries of M2.0 or above for this area and period, spread over 244 days.

Catalogue entries1,52614 Sep 2025 – 14 Sep 2026
Strongest recorded earthquakeM5.8Mendocino County ↗
Depth · median5.9 km1,493 events with valid depth
Last 30 days207Previous 30 days: 252

These figures describe the stored catalogue. Recording, magnitude types and geographic attribution may vary by source and period; completeness has not been established.

14 Sep 2025 – 14 Sep 2026

Earthquakes by month

M ≥ 2.0

Each bar counts events within the selected period. Hatched months are only partially included.

View data table
MonthAnalysis periodCatalogue entries
September 2025 · Partial month14 Sep 2025 – 30 Sep 20250
October 202501 Oct 2025 – 31 Oct 20250
November 202501 Nov 2025 – 30 Nov 20250
December 202501 Dec 2025 – 31 Dec 20250
January 202601 Jan 2026 – 31 Jan 2026214
February 202601 Feb 2026 – 28 Feb 2026211
March 202601 Mar 2026 – 31 Mar 202668
April 202601 Apr 2026 – 30 Apr 202673
May 202601 May 2026 – 31 May 2026149
June 202601 Jun 2026 – 30 Jun 2026213
July 202601 Jul 2026 – 31 Jul 2026257
August 202601 Aug 2026 – 31 Aug 2026257
September 2026 · Partial month01 Sep 2026 – 14 Sep 202684

How strong were the earthquakes?

Catalogue entries · 1,526

M 2.0 – < 3.01,392
M 3.0 – < 4.0114
M 4.0 – < 5.016
M 5.0 – < 6.04
M ≥ 6.00

At what depth did they occur?

1,493 events with valid depth

0 – < 30 km1,474
30 – < 70 km18
70 – < 300 km1
300 – 750 km0

33 events without valid depth are excluded here.

Depth · median

Half of the available values lie on either side of the median; ties are possible.

Current period in context

Last 30 days207
Previous 30 days252
Median of the eleven previous 30-day periods111

Same magnitude threshold, separate periods. Differences may also reflect changes in recording. No hazard level or forecast is inferred.

Where were earthquakes recorded?

Events assigned to California in the stored location data are analysed. This is not a radius search. Missing or different attributions are excluded.

The interactive map complements the event links on this page.

Marker size and colour indicate magnitude.

Strongest recorded earthquake

14 Sep 2025 – 14 Sep 2026 · M ≥ 2.0

Data and methodology

Analysis period: 14 Sep 2025 08:00 – 14 Sep 2026 08:00 UTC

Data and methodology

Reports are first reconciled using existing event associations. Additional reports from different sources are consolidated only when every pair is within 5 seconds, 10 km and 0.5 magnitude units, source groups do not overlap and exactly one group matches. Ambiguous cases remain separate. The preferred report determines magnitude, time and area; period and magnitude filters are applied afterwards. The start is included and the end excluded (UTC).

108 additional source reports were consolidated during source reconciliation.

Events assigned to California in the stored location data are analysed. This is not a radius search. Missing or different attributions are excluded.

These figures describe the stored catalogue. Recording, magnitude types and geographic attribution may vary by source and period; completeness has not been established.

Source reports used

The preferred report of each group is counted. Source priority follows the earthquake list. Different magnitude types and recording gaps limit comparability.

  • USGS777
  • SCEDC366
  • EMSC342
  • ISC38
  • SERBIA_RSZ1
  • INGV1
  • GFZ1

The profile is recalculated hourly from the earthquake catalogue. Later source revisions may also change historical values.

Data as of: 14 Sep 2026 · 08:32 UTC

Map (last 30 days)

< 2 2–4 4–5 ≥ 5

About California

California is a U.S. state in the Western United States that lies on the Pacific Coast. It borders Oregon to the north, and Nevada and Arizona to the east; it also shares an international border with the Mexican state of Baja California to the south.

Seismic activity in 2026

In 2026, California recorded 17100 earthquakes within United States. The average magnitude was M1.27. The strongest event reached M5.8.

Based on the number of recorded earthquakes in 2026, California is currently among the Top 5 most active regions in United States (rank #1 by count).

Considering the strongest recorded event in 2026, California is among the Top 5 strongest regions in United States (rank #2 by max magnitude).

Located on the North America Plate.

Earthquakes in California (last 30 days)

M0.9
Castle Rock Springs
2026-09-14 · 06:34 UTC · 2 km
›
M0.7
Sonoma County
2026-09-14 · 06:26 UTC · 2 km
›
M1.3
Kern County
2026-09-14 · 06:07 UTC · 5 km
›
M1.0
San Diego County
2026-09-14 · 06:01 UTC · 10 km
›
M1.3
Fresno County
2026-09-14 · 05:53 UTC · 5 km
›
M0.9
Black Oaks
2026-09-14 · 05:44 UTC · 2 km
›
M1.6
Kern County
2026-09-14 · 05:41 UTC · 10 km
›
M1.1
Orange County
2026-09-14 · 04:57 UTC · 14 km
›
M0.8
Sonoma County
2026-09-14 · 04:49 UTC · 2 km
›
M1.2
Mountain Center
2026-09-14 · 03:34 UTC · 15 km
›
M1.7
San Bernardino County
2026-09-14 · 03:20 UTC · 9 km
›
M0.6
Sonoma County
2026-09-14 · 03:01 UTC · 1 km
›
M0.9
Sonoma County
2026-09-14 · 02:43 UTC · 2 km
›
M0.5
Riverside County
2026-09-14 · 02:32 UTC · 14 km
›
M1.0
Sonoma County
2026-09-14 · 02:19 UTC · 3 km
›
M0.8
Sonoma County
2026-09-14 · 02:10 UTC · 1 km
›
M0.6
San Diego County
2026-09-14 · 01:51 UTC · 10 km
›
M0.8
Cobb
2026-09-14 · 01:46 UTC · 2 km
›
M1.0
Sonoma County
2026-09-14 · 01:33 UTC · 4 km
›
M1.6
San Diego County
2026-09-14 · 01:24 UTC · 7 km
›
M0.8
Cobb
2026-09-14 · 01:17 UTC · 3 km
›
M0.9
Big Pines
2026-09-14 · 00:57 UTC · 8 km
›
M1.7
Woodside
2026-09-14 · 00:52 UTC · 4 km
›
M2.0
Woodside
2026-09-14 · 00:45 UTC · 4 km
›
M2.5
Woodside
2026-09-14 · 00:44 UTC · 4 km
›
M1.2
San Diego County
2026-09-14 · 00:40 UTC · -1 km
›
M2.2
Mendocino County
2026-09-14 · 00:37 UTC · 4 km
›
M1.5
Inyo County
2026-09-14 · 00:33 UTC · 1 km
›
M1.5
Hollister
2026-09-13 · 23:45 UTC · 10 km
›
M0.8
Sonoma County
2026-09-13 · 23:32 UTC · 3 km
›
M0.6
Sonoma County
2026-09-13 · 23:26 UTC · 8 km
›
M1.5
Baker
2026-09-13 · 23:18 UTC · -1 km
›
M2.1
Fresno County
2026-09-13 · 23:06 UTC · 5 km
›
M1.7
Black Oaks
2026-09-13 · 22:15 UTC · 2 km
›
M1.4
Santa Clara County
2026-09-13 · 22:09 UTC · 10 km
›
M2.6
Contra Costa County
2026-09-13 · 22:06 UTC · 17 km
›
M1.0
San Bernardino County
2026-09-13 · 21:50 UTC · 9 km
›
M0.8
Riverside County
2026-09-13 · 21:48 UTC · 10 km
›
M1.5
Shasta County
2026-09-13 · 21:38 UTC · 9 km
›
M1.2
Riverside County
2026-09-13 · 21:34 UTC · 5 km
›
M1.4
Santa Clara County
2026-09-13 · 19:45 UTC · 7 km
›
M1.6
San Benito County
2026-09-13 · 19:30 UTC · 1 km
›
M1.2
Riverside County
2026-09-13 · 19:21 UTC · 1 km
›
M2.0
Riverside County
2026-09-13 · 19:21 UTC · 4 km
›
M0.6
Riverside County
2026-09-13 · 19:13 UTC · 4 km
›
M1.3
Kern County
2026-09-13 · 18:58 UTC · 10 km
›
M0.3
Black Oaks
2026-09-13 · 18:36 UTC · 2 km
›
M0.9
Sonoma County
2026-09-13 · 18:34 UTC · 2 km
›
M1.5
Inyo County
2026-09-13 · 18:28 UTC · 5 km
›
M0.8
Mendocino County
2026-09-13 · 18:10 UTC · 2 km
›
M0.4
Sonoma County
2026-09-13 · 18:02 UTC · 2 km
›
M1.1
Hidden Valley
2026-09-13 · 17:50 UTC · 7 km
›
M1.9
Mendocino County
2026-09-13 · 17:37 UTC · 8 km
›
M1.0
Banning
2026-09-13 · 17:08 UTC · 3 km
›
M0.9
Castle Rock Springs
2026-09-13 · 16:58 UTC · 2 km
›
M0.2
Caldwell Pines
2026-09-13 · 16:31 UTC · 2 km
›
M1.3
Black Oaks
2026-09-13 · 16:26 UTC · 12 km
›
M1.6
San Bernardino County
2026-09-13 · 16:15 UTC · 8 km
›
M0.7
Black Oaks
2026-09-13 · 15:26 UTC · 2 km
›
M2.3
Hidden Valley
2026-09-13 · 15:19 UTC · 8 km
›
M1.5
San Diego County
2026-09-13 · 15:05 UTC · 10 km
›
M0.8
Black Oaks
2026-09-13 · 14:14 UTC · 3 km
›
M1.5
Alameda County
2026-09-13 · 14:11 UTC · 3 km
›
M1.0
Sonoma County
2026-09-13 · 14:09 UTC · 2 km
›
M0.7
Sonoma County
2026-09-13 · 14:00 UTC · 2 km
›
M2.5
Mendocino County
2026-09-13 · 13:55 UTC · 5 km
›
M1.3
San Bernardino County
2026-09-13 · 12:39 UTC · 1 km
›
M1.7
Canebrake
2026-09-13 · 12:22 UTC · 10 km
›
M1.5
Riverside County
2026-09-13 · 12:03 UTC · 12 km
›
M1.7
San Diego County
2026-09-13 · 12:01 UTC · 7 km
›
M1.0
Fresno County
2026-09-13 · 11:38 UTC · 6 km
›
M1.2
San Bernardino County
2026-09-13 · 11:26 UTC · 9 km
›
M0.8
Oakland
2026-09-13 · 11:09 UTC · 5 km
›
M0.7
San Diego County
2026-09-13 · 10:52 UTC · 10 km
›
M0.7
Mendocino County
2026-09-13 · 10:48 UTC · 0 km
›
M1.2
Weldon
2026-09-13 · 10:37 UTC · 9 km
›
M1.7
San Diego County
2026-09-13 · 09:38 UTC · 11 km
›
M0.4
Riverside County
2026-09-13 · 09:36 UTC · 12 km
›
M1.0
Riverside County
2026-09-13 · 09:11 UTC · 18 km
›
M0.9
Sonoma County
2026-09-13 · 08:59 UTC · 3 km
›
M0.7
Black Oaks
2026-09-13 · 08:36 UTC · 2 km
›
M1.5
Rancho Cucamonga
2026-09-13 · 07:45 UTC · 44 km
›
M1.8
San Diego County
2026-09-13 · 07:16 UTC · 12 km
›
M0.6
Riverside County
2026-09-13 · 07:16 UTC · 12 km
›
M1.2
San Diego County
2026-09-13 · 07:15 UTC · 7 km
›
M1.6
Imperial County
2026-09-13 · 07:08 UTC · 15 km
›
M0.6
Black Oaks
2026-09-13 · 07:05 UTC · 2 km
›
M1.1
Yucaipa
2026-09-13 · 07:03 UTC · 18 km
›
M1.4
Borrego Springs
2026-09-13 · 06:56 UTC · 11 km
›
M1.6
Santa Clara County
2026-09-13 · 06:55 UTC · 6 km
›
M0.6
Mountain Center
2026-09-13 · 06:51 UTC · 18 km
›
M1.5
Los Angeles County
2026-09-13 · 05:50 UTC · 30 km
›
M1.2
Riverside County
2026-09-13 · 05:10 UTC · 3 km
›
M1.5
Riverside County
2026-09-13 · 04:52 UTC · 5 km
›
M0.7
Riverside County
2026-09-13 · 04:36 UTC · 2 km
›
M1.1
Riverside County
2026-09-13 · 04:21 UTC · 5 km
›
M1.3
Riverside County
2026-09-13 · 04:12 UTC · 4 km
›
M2.1
Kern County
2026-09-13 · 04:02 UTC · 0 km
›
M1.2
Riverside County
2026-09-13 · 03:55 UTC · 4 km
›
M1.0
Yucaipa
2026-09-13 · 03:29 UTC · 13 km
›
M1.4
San Bernardino County
2026-09-13 · 03:13 UTC · 7 km
›
M1.3
Mountain Center
2026-09-13 · 03:01 UTC · 17 km
›
M1.5
Loma Linda
2026-09-13 · 02:52 UTC · 17 km
›
M0.8
Sonoma County
2026-09-13 · 02:51 UTC · 1 km
›
M1.3
San Diego County
2026-09-13 · 02:36 UTC · 3 km
›
M1.3
Black Oaks
2026-09-13 · 02:27 UTC · 2 km
›
M1.2
Kern County
2026-09-13 · 01:54 UTC · 13 km
›
M0.5
San Diego County
2026-09-13 · 01:49 UTC · 3 km
›
M1.1
Sonoma County
2026-09-13 · 01:39 UTC · 1 km
›
M1.3
Cobb
2026-09-13 · 01:16 UTC · 2 km
›
M1.5
Sonoma County
2026-09-13 · 00:59 UTC · 2 km
›
M1.0
Napa County
2026-09-13 · 00:29 UTC · 8 km
›
M1.3
Sonoma County
2026-09-12 · 23:51 UTC · 0 km
›
M0.9
San Diego County
2026-09-12 · 23:47 UTC · 11 km
›
M1.3
Caldwell Pines
2026-09-12 · 23:21 UTC · 2 km
›
M0.6
Sonoma County
2026-09-12 · 22:28 UTC · 3 km
›
M0.5
Riverside County
2026-09-12 · 22:25 UTC · 13 km
›
M1.0
Cobb
2026-09-12 · 21:50 UTC · 2 km
›
M0.6
Lake County
2026-09-12 · 21:46 UTC · 8 km
›
M0.7
Cobb
2026-09-12 · 21:33 UTC · 2 km
›