California, United States – Earthquakes

This page summarizes earthquakes in California (United States). The most recently recorded event was a magnitude M1.0 earthquake near Sonoma County on 2026-09-17 15:16:39 UTC. All event lists and map markers are limited to the last 30 days.

Seismic profile ↓
Earthquakes (last 30 days)
2971
Max magnitude (last 30 days)
M4.1
Avg magnitude (last 30 days)
M1.27
Avg depth (last 30 days)
7 km

Seismic profile

Analysis period17 Sep 2025 – 17 Sep 2026Data as of: 17 Sep 2026 · 15:00 UTC
Minimum magnitude

What the data show

California · M ≥ 3.0

After source reconciliation, the catalogue contains 241 event entries of M3.0 or above for this area and period, spread over 144 days.

Catalogue entries24117 Sep 2025 – 17 Sep 2026
Strongest recorded earthquakeM5.8Mendocino County ↗
Depth · median8.0 km236 events with valid depth
Last 30 days14Previous 30 days: 25

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

17 Sep 2025 – 17 Sep 2026

Earthquakes by month

M ≥ 3.0

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

View data table
MonthAnalysis periodCatalogue entries
September 2025 · Partial month17 Sep 2025 – 30 Sep 20254
October 202501 Oct 2025 – 31 Oct 202518
November 202501 Nov 2025 – 30 Nov 202538
December 202501 Dec 2025 – 31 Dec 202543
January 202601 Jan 2026 – 31 Jan 202631
February 202601 Feb 2026 – 28 Feb 202612
March 202601 Mar 2026 – 31 Mar 20268
April 202601 Apr 2026 – 30 Apr 20265
May 202601 May 2026 – 31 May 202612
June 202601 Jun 2026 – 30 Jun 202619
July 202601 Jul 2026 – 31 Jul 202622
August 202601 Aug 2026 – 31 Aug 202621
September 2026 · Partial month01 Sep 2026 – 17 Sep 20268

How strong were the earthquakes?

Catalogue entries · 241

M 3.0 – < 4.0198
M 4.0 – < 5.037
M 5.0 – < 6.06
M ≥ 6.00

At what depth did they occur?

236 events with valid depth

0 – < 30 km234
30 – < 70 km2
70 – < 300 km0
300 – 750 km0

5 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 days14
Previous 30 days25
Median of the eleven previous 30-day periods16

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

17 Sep 2025 – 17 Sep 2026 · M ≥ 3.0

Data and methodology

Analysis period: 17 Sep 2025 15:00 – 17 Sep 2026 15:00 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).

96 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.

  • USGS179
  • EMSC29
  • ISC16
  • SCEDC12
  • GFZ3
  • SERBIA_RSZ1
  • INGV1

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

Data as of: 17 Sep 2026 · 15:32 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 17711 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)

M0.7
Sonoma County
2026-09-17 · 15:15 UTC · 4 km
›
M0.8
Sonoma County
2026-09-17 · 15:06 UTC · 4 km
›
M2.2
Apple Valley
2026-09-17 · 14:27 UTC · 0 km
›
M3.4
Siskiyou County
2026-09-17 · 14:26 UTC · 48 km
›
M1.1
Sonoma County
2026-09-17 · 14:22 UTC · 3 km
›
M0.4
Lake County
2026-09-17 · 14:22 UTC · 1 km
›
M1.0
Sonoma County
2026-09-17 · 14:05 UTC · 6 km
›
M1.0
Cherry Valley
2026-09-17 · 14:03 UTC · 9 km
›
M0.7
Riverside County
2026-09-17 · 12:54 UTC · 16 km
›
M0.2
Cobb
2026-09-17 · 12:33 UTC · 2 km
›
M1.3
Kern County
2026-09-17 · 12:23 UTC · 7 km
›
M0.3
Sonoma County
2026-09-17 · 12:22 UTC · 2 km
›
M0.6
Riverside County
2026-09-17 · 11:55 UTC · 15 km
›
M0.6
Riverside County
2026-09-17 · 11:32 UTC · 15 km
›
M0.7
Black Oaks
2026-09-17 · 11:22 UTC · 2 km
›
M0.8
Sonoma County
2026-09-17 · 11:15 UTC · 0 km
›
M1.7
Mendocino County
2026-09-17 · 09:59 UTC · -1 km
›
M1.2
Simi Valley
2026-09-17 · 09:56 UTC · 9 km
›
M1.4
Simi Valley
2026-09-17 · 09:53 UTC · 9 km
›
M0.5
Borrego Springs
2026-09-17 · 09:37 UTC · 13 km
›
M1.4
Borrego Springs
2026-09-17 · 09:37 UTC · 14 km
›
M0.4
Sonoma County
2026-09-17 · 09:33 UTC · 1 km
›
M1.8
Pacifica
2026-09-17 · 09:32 UTC · 4 km
›
M0.7
Black Oaks
2026-09-17 · 09:21 UTC · 3 km
›
M0.8
Sonoma County
2026-09-17 · 08:57 UTC · 3 km
›
M1.7
San Diego County
2026-09-17 · 07:14 UTC · 10 km
›
M0.7
Cobb
2026-09-17 · 06:00 UTC · 2 km
›
M0.8
Black Oaks
2026-09-17 · 05:26 UTC · 3 km
›
M0.4
Mendocino County
2026-09-17 · 05:21 UTC · 9 km
›
M1.5
Sonoma County
2026-09-17 · 05:18 UTC · 3 km
›
M1.7
Inyo County
2026-09-17 · 04:33 UTC · 0 km
›
M1.2
Riverside County
2026-09-17 · 04:05 UTC · 4 km
›
M0.4
Riverside County
2026-09-17 · 04:05 UTC · 5 km
›
M0.6
Riverside County
2026-09-17 · 03:56 UTC · 13 km
›
M1.0
Black Oaks
2026-09-17 · 03:27 UTC · 2 km
›
M1.2
Kern County
2026-09-17 · 03:23 UTC · 6 km
›
M1.1
Riverside County
2026-09-17 · 03:08 UTC · 12 km
›
M2.6
Santa Clara County
2026-09-17 · 03:07 UTC · 6 km
›
M1.3
Sonoma County
2026-09-17 · 03:04 UTC · 3 km
›
M0.7
Black Oaks
2026-09-17 · 02:58 UTC · 2 km
›
M1.4
Inyo County
2026-09-17 · 02:57 UTC · 2 km
›
M1.6
San Benito County
2026-09-17 · 02:53 UTC · -1 km
›
M0.6
Sonoma County
2026-09-17 · 02:52 UTC · 2 km
›
M1.8
Palos Verdes Estates
2026-09-17 · 02:49 UTC · 27 km
›
M1.2
Sonoma County
2026-09-17 · 02:44 UTC · 8 km
›
M0.9
Black Oaks
2026-09-17 · 02:43 UTC · 2 km
›
M1.2
Inyo County
2026-09-17 · 02:36 UTC · 3 km
›
M0.6
Riverside County
2026-09-17 · 02:29 UTC · 14 km
›
M1.0
Mendocino County
2026-09-17 · 02:16 UTC · 1 km
›
M1.1
Riverside County
2026-09-17 · 02:13 UTC · 5 km
›
M0.8
Sonoma County
2026-09-17 · 02:10 UTC · 2 km
›
M0.8
Los Angeles County
2026-09-17 · 01:52 UTC · 6 km
›
M0.5
Cobb
2026-09-17 · 01:47 UTC · 2 km
›
M1.4
Los Angeles County
2026-09-17 · 01:40 UTC · 9 km
›
M0.7
Los Angeles County
2026-09-17 · 00:37 UTC · 5 km
›
M0.3
Sonoma County
2026-09-16 · 23:56 UTC · 2 km
›
M0.8
Sonoma County
2026-09-16 · 23:50 UTC · 2 km
›
M1.3
Kern County
2026-09-16 · 22:39 UTC · 6 km
›
M1.7
Humboldt County
2026-09-16 · 22:33 UTC · 28 km
›
M1.4
Soboba
2026-09-16 · 22:32 UTC · 11 km
›
M1.8
Tulare County
2026-09-16 · 22:32 UTC · 2 km
›
M1.0
Castle Rock Springs
2026-09-16 · 22:20 UTC · 2 km
›
M1.9
Castle Rock Springs
2026-09-16 · 22:12 UTC · 1 km
›
M0.9
Cobb
2026-09-16 · 21:48 UTC · 3 km
›
M1.1
San Benito County
2026-09-16 · 21:36 UTC · 8 km
›
M0.9
Sonoma County
2026-09-16 · 21:36 UTC · 3 km
›
M1.1
Imperial County
2026-09-16 · 21:28 UTC · 3 km
›
M1.6
Imperial County
2026-09-16 · 20:45 UTC · 6 km
›
M1.0
San Bernardino County
2026-09-16 · 20:43 UTC · 2 km
›
M1.1
Cobb
2026-09-16 · 20:20 UTC · 2 km
›
M0.8
Riverside County
2026-09-16 · 19:26 UTC · 15 km
›
M1.1
Los Angeles County
2026-09-16 · 19:18 UTC · 4 km
›
M2.0
Dublin
2026-09-16 · 19:15 UTC · 9 km
›
M1.5
Pala Mesa
2026-09-16 · 19:02 UTC · 4 km
›
M1.2
East Los Angeles
2026-09-16 · 18:52 UTC · 9 km
›
M0.7
Black Oaks
2026-09-16 · 18:47 UTC · 2 km
›
M1.1
Black Oaks
2026-09-16 · 18:45 UTC · 1 km
›
M1.4
Covina
2026-09-16 · 18:27 UTC · 9 km
›
M0.8
Banning
2026-09-16 · 18:26 UTC · 17 km
›
M1.5
Berkeley
2026-09-16 · 17:12 UTC · 4 km
›
M1.9
La Mirada
2026-09-16 · 17:05 UTC · 0 km
›
M0.5
Riverside County
2026-09-16 · 15:58 UTC · 12 km
›
M1.6
Inyo County
2026-09-16 · 15:55 UTC · 5 km
›
M0.9
Riverside County
2026-09-16 · 15:34 UTC · 16 km
›
M1.1
Sonoma County
2026-09-16 · 15:25 UTC · -1 km
›
M1.1
San Bernardino County
2026-09-16 · 15:23 UTC · 3 km
›
M1.6
San Benito County
2026-09-16 · 15:13 UTC · 11 km
›
M2.2
Dublin
2026-09-16 · 14:54 UTC · 10 km
›
M1.6
Dublin
2026-09-16 · 14:53 UTC · 10 km
›
M1.2
Inyo County
2026-09-16 · 14:46 UTC · 4 km
›
M1.6
Inyo County
2026-09-16 · 14:13 UTC · 2 km
›
M1.1
Riverside County
2026-09-16 · 14:12 UTC · 1 km
›
M0.7
Inyo County
2026-09-16 · 14:05 UTC · 5 km
›
M2.0
Inyo County
2026-09-16 · 13:56 UTC · 1 km
›
M2.6
Riverside County
2026-09-16 · 13:34 UTC · 0 km
›
M0.5
Riverside County
2026-09-16 · 13:31 UTC · 16 km
›
M1.1
San Benito County
2026-09-16 · 13:16 UTC · 7 km
›
M1.3
Riverside County
2026-09-16 · 13:02 UTC · 19 km
›
M0.7
Kern County
2026-09-16 · 12:30 UTC · 6 km
›
M1.9
Santa Rosa
2026-09-16 · 12:21 UTC · 8 km
›
M1.1
Sonoma County
2026-09-16 · 12:06 UTC · 3 km
›
M1.6
Black Oaks
2026-09-16 · 11:36 UTC · 2 km
›
M1.2
Riverside County
2026-09-16 · 11:19 UTC · 7 km
›
M1.8
Plumas County
2026-09-16 · 09:57 UTC · -1 km
›
M0.8
Caldwell Pines
2026-09-16 · 09:51 UTC · 2 km
›
M1.5
Riverside County
2026-09-16 · 09:49 UTC · 11 km
›
M2.2
Fresno County
2026-09-16 · 09:35 UTC · 8 km
›
M0.8
Riverside County
2026-09-16 · 09:21 UTC · 6 km
›
M1.0
Mendocino County
2026-09-16 · 09:06 UTC · 1 km
›
M0.6
Cobb
2026-09-16 · 08:44 UTC · 6 km
›
M0.8
Cobb
2026-09-16 · 08:17 UTC · 2 km
›
M1.9
Humboldt County
2026-09-16 · 08:07 UTC · 19 km
›
M0.6
Riverside County
2026-09-16 · 07:53 UTC · 6 km
›
M1.6
Castle Rock Springs
2026-09-16 · 07:31 UTC · 2 km
›
M0.8
Cobb
2026-09-16 · 07:20 UTC · 18 km
›
M0.3
Black Oaks
2026-09-16 · 07:08 UTC · 2 km
›
M2.4
Fresno County
2026-09-16 · 06:52 UTC · 3 km
›
M0.5
Riverside County
2026-09-16 · 06:43 UTC · 6 km
›
M2.0
La Cresta
2026-09-16 · 06:43 UTC · 13 km
›
M0.7
Sonoma County
2026-09-16 · 06:32 UTC · 3 km
›