Earthquake swarm recorded across California

Between 2026-07-30 and 2026-08-02, six earthquakes struck California ranging from magnitude 2.5 to 3.6. Notable events included a M3.6 near Toms Place (July 30), a M3.0 near Palomar Observatory (July 31), and a M3.6 near Pinnacles (August 2). Depths ranged from 2 to 14 kilometers.

40 reports · 28 independentprimary

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M 3.6 - 15 km WSW of Toms Place, CA

rss:usgs-quakes-25primary61d ago kagi ↗

ShakeMap - III DYFI? - III Time 2026-07-30 15:34:57 UTC 2026-07-30 15:34:57 UTC at epicenter Location 37.503 N 118.839 W Depth 7.22 km (4.49 mi)

M 2.7 - 18 km NNE of Upper Lake, CA

rss:usgs-quakes-25primary60d ago kagi ↗

DYFI? - II Time 2026-07-31 06:51:57 UTC 2026-07-31 06:51:57 UTC at epicenter Location 39.303 N 122.793 W Depth 4.36 km (2.71 mi)

M 2.5 - 76 km W of Petrolia, CA

rss:usgs-quakes-25primary60d ago kagi ↗

Time 2026-07-31 08:25:35 UTC 2026-07-31 08:25:35 UTC at epicenter Location 40.332 N 125.180 W Depth 2.77 km (1.72 mi)

M 4.6 - 95 km WNW of Amagi, Japan

rss:usgs-quakes-25primary60d ago wire ×2 kagi ↗

Time 2026-07-31 12:58:40 UTC 2026-07-31 12:58:40 UTC at epicenter Location 28.201 N 128.030 E Depth 10.00 km (6.21 mi)

M 2.7 - 40 km SE of Alamo, Nevada

rss:usgs-quakes-25primary60d ago kagi ↗

DYFI? - II Time 2026-07-31 02:21:20 UTC 2026-07-31 02:21:20 UTC at epicenter Location 37.118 N 114.834 W Depth 6.82 km (4.24 mi)

M 5.6 - 13 km ENE of San Fernando, Peru

rss:usgs-quakes-25primary60d ago wire ×2 kagi ↗

PAGER - GREEN ShakeMap - IV DYFI? - III Time 2026-07-31 00:58:44 UTC 2026-07-31 00:58:44 UTC at epicenter Location 8.335 S 74.435 W Depth 154.36 km (95.91 mi)

M 5.1 - 69 km W of Coquimbo, Chile

rss:usgs-quakes-25primary60d ago wire ×2 kagi ↗

Time 2026-07-31 17:47:07 UTC 2026-07-31 17:47:07 UTC at epicenter Location 29.895 S 72.061 W Depth 21.34 km (13.26 mi)

M 2.9 - 11 km ESE of Gilroy, CA

rss:usgs-quakes-25primary60d ago kagi ↗

DYFI? - III Time 2026-07-31 20:02:42 UTC 2026-07-31 20:02:42 UTC at epicenter Location 36.966 N 121.450 W Depth 5.40 km (3.36 mi)

M 4.1 - 17 km ESE of Kirkuk, Iraq

rss:usgs-quakes-25primary60d ago kagi ↗

Time 2026-07-31 04:49:37 UTC 2026-07-31 04:49:37 UTC at epicenter Location 35.406 N 44.564 E Depth 10.00 km (6.21 mi)

M 4.1 - 111 km N of Campbell River, Canada

rss:usgs-quakes-25primary60d ago kagi ↗

PAGER - GREEN ShakeMap - IV DYFI? - II Time 2026-07-31 05:45:57 UTC 2026-07-31 05:45:57 UTC at epicenter Location 50.999 N 125.544 W Depth 10.00 km (6.21 mi)

M 4.5 - 54 km NE of Simao, China

rss:usgs-quakes-25primary60d ago wire ×2 kagi ↗

Time 2026-07-31 21:24:10 UTC 2026-07-31 21:24:10 UTC at epicenter Location 23.191 N 101.288 E Depth 10.00 km (6.21 mi)

M 4.5 - 1 km N of Quarto, Italy

rss:usgs-quakes-25primary60d ago wire ×2 kagi ↗

PAGER - GREEN ShakeMap - VI DYFI? - VI Time 2026-07-31 17:46:43 UTC 2026-07-31 17:46:43 UTC at epicenter Location 40.891 N 14.144 E Depth 5.00 km (3.11 mi)

M 3.6 - 6 km NW of Pinnacles, CA

rss:usgs-quakes-25primary58d ago kagi ↗

ShakeMap - IV DYFI? - IV Time 2026-08-02 12:36:57 UTC 2026-08-02 12:36:57 UTC at epicenter Location 36.563 N 121.192 W Depth 2.19 km (1.36 mi)