UNDERCOVERED IN US

Multiple seismic events recorded across Americas and Pacific

A magnitude 7.3 earthquake struck 58 km west-southwest of Puerto Madero, Mexico, followed by a 6.4 aftershock in the same region on July 23. Separately, minor tremors were recorded near Valparaíso Chile, Attu Station Alaska, and Naalehu Hawaii between July 23–29.

265 reports · 169 independentprimary

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M 4.3 - 72 km SE of Atka, Alaska

rss:usgs-quakes-25primary65d ago kagi ↗

ShakeMap - III Time 2026-07-26 13:18:43 UTC 2026-07-26 13:18:43 UTC at epicenter Location 51.732 N 173.451 W Depth 43.18 km (26.83 mi)

M 3.1 - 2 km N of Armilla, Spain

rss:usgs-quakes-25primary65d ago kagi ↗

DYFI? - IV Time 2026-07-26 13:39:29 UTC 2026-07-26 13:39:29 UTC at epicenter Location 37.164 N 3.623 W Depth 10.00 km (6.21 mi)

M 3.2 - 151 km SSE of Atka, Alaska

rss:usgs-quakes-25primary64d ago kagi ↗

Time 2026-07-26 13:27:01 UTC 2026-07-26 13:27:01 UTC at epicenter Location 50.966 N 173.256 W Depth 10.00 km (6.21 mi)

M 3.7 - 91 km SE of Atka, Alaska

rss:usgs-quakes-25primary64d ago kagi ↗

ShakeMap - III Time 2026-07-26 16:06:59 UTC 2026-07-26 16:06:59 UTC at epicenter Location 51.549 N 173.387 W Depth 11.90 km (7.39 mi)

M 3.9 - 112 km SW of Atka, Alaska

rss:usgs-quakes-25primary64d ago kagi ↗

ShakeMap - III Time 2026-07-26 17:16:12 UTC 2026-07-26 17:16:12 UTC at epicenter Location 51.376 N 175.146 W Depth 35.00 km (21.75 mi)

M 4.5 - 53 km N of Arauco, Argentina

rss:usgs-quakes-25primary64d ago wire ×2 kagi ↗

Time 2026-07-26 17:29:13 UTC 2026-07-26 17:29:13 UTC at epicenter Location 28.097 S 66.726 W Depth 157.11 km (97.63 mi)

M 2.8 - 13 km S of Claude, Texas

rss:usgs-quakes-25primary64d ago kagi ↗

Time 2026-07-26 17:26:36 UTC 2026-07-26 17:26:36 UTC at epicenter Location 34.996 N 101.386 W Depth 6.76 km (4.20 mi)

M 4.4 - Kuril Islands

rss:usgs-quakes-25primary64d ago kagi ↗

Time 2026-07-26 18:00:02 UTC 2026-07-26 18:00:02 UTC at epicenter Location 48.222 N 154.213 E Depth 71.45 km (44.40 mi)

M 4.6 - south of the Fiji Islands

rss:usgs-quakes-25primary64d ago wire ×5 kagi ↗

Time 2026-07-26 18:15:31 UTC 2026-07-26 18:15:31 UTC at epicenter Location 23.480 S 179.877 E Depth 535.43 km (332.70 mi)

M 5.4 - northern Mid-Atlantic Ridge

rss:usgs-quakes-45primary64d ago wire ×2 kagi ↗

Time 2026-07-26 18:19:40 UTC 2026-07-26 18:19:40 UTC at epicenter Location 29.937 N 42.805 W Depth 10.00 km (6.21 mi)

M 2.8 - 22 km SE of Waikoloa, Hawaii

rss:usgs-quakes-25primary64d ago kagi ↗

DYFI? - III Time 2026-07-26 20:30:59 UTC 2026-07-26 20:30:59 UTC at epicenter Location 19.816 N 155.616 W Depth 23.13 km (14.37 mi)

M 5.0 - South Atlantic Ocean

rss:usgs-quakes-25primary64d ago wire ×4 kagi ↗

Time 2026-07-26 22:39:02 UTC 2026-07-26 22:39:02 UTC at epicenter Location 22.513 S 20.245 W Depth 10.00 km (6.21 mi)

M 4.6 - 68 km S of Hihifo, Tonga

rss:usgs-quakes-25primary64d ago wire ×2 kagi ↗

Time 2026-07-27 01:05:37 UTC 2026-07-27 01:05:37 UTC at epicenter Location 16.563 S 173.917 W Depth 80.47 km (50.00 mi)

M 4.9 - south of Tonga

rss:usgs-quakes-25primary64d ago wire ×24 kagi ↗

Time 2026-07-27 01:38:43 UTC 2026-07-27 01:38:43 UTC at epicenter Location 24.503 S 175.166 W Depth 10.00 km (6.21 mi)

M 4.5 - 10 km NE of Yujing, Taiwan

rss:usgs-quakes-25primary64d ago wire ×2 kagi ↗

Time 2026-07-27 02:14:50 UTC 2026-07-27 02:14:50 UTC at epicenter Location 23.188 N 120.536 E Depth 18.64 km (11.58 mi)

M 4.1 - western Xizang

rss:usgs-quakes-25primary64d ago kagi ↗

Time 2026-07-27 04:31:24 UTC 2026-07-27 04:31:24 UTC at epicenter Location 35.402 N 87.678 E Depth 10.00 km (6.21 mi)

M 2.5 - 3 km NW of The Geysers, CA

rss:usgs-quakes-25primary64d ago kagi ↗

Time 2026-07-27 06:29:25 UTC 2026-07-27 06:29:25 UTC at epicenter Location 38.798 N 122.781 W Depth 3.47 km (2.16 mi)

M 3.8 - 31 km S of Segundo, Colorado

rss:usgs-quakes-25primary64d ago wire ×4 kagi ↗

ShakeMap - V Time 2026-07-27 06:40:15 UTC 2026-07-27 06:40:15 UTC at epicenter Location 36.846 N 104.816 W Depth 5.00 km (3.11 mi)

M 3.0 - 12 km ESE of Gilroy, CA

rss:usgs-quakes-25primary64d ago kagi ↗

DYFI? - III Time 2026-07-27 08:13:16 UTC 2026-07-27 08:13:16 UTC at epicenter Location 36.958 N 121.448 W Depth 5.24 km (3.26 mi)

M 4.6 - 61 km E of La Tirana, Chile

rss:usgs-quakes-25primary64d ago wire ×2 kagi ↗

Time 2026-07-27 10:24:53 UTC 2026-07-27 10:24:53 UTC at epicenter Location 20.244 S 69.077 W Depth 105.24 km (65.39 mi)

M 3.2 - 117 km SE of Atka, Alaska

rss:usgs-quakes-25primary64d ago kagi ↗

Time 2026-07-26 13:27:07 UTC 2026-07-26 13:27:07 UTC at epicenter Location 51.439 N 173.003 W Depth 35.00 km (21.75 mi)

M 2.8 - 3 km ENE of The Geysers, CA

rss:usgs-quakes-25primary64d ago wire ×2 kagi ↗

Time 2026-07-27 15:29:01 UTC 2026-07-27 15:29:01 UTC at epicenter Location 38.784 N 122.726 W Depth 1.33 km (0.83 mi)

M 2.6 - 4 km SW of Pāhala, Hawaii

rss:usgs-quakes-25primary64d ago kagi ↗

Time 2026-07-27 16:25:55 UTC 2026-07-27 16:25:55 UTC at epicenter Location 19.173 N 155.501 W Depth 48.81 km (30.33 mi)

M 4.2 - 113 km S of Honchō, Japan

rss:usgs-quakes-25primary63d ago kagi ↗

Time 2026-07-27 18:40:22 UTC 2026-07-27 18:40:22 UTC at epicenter Location 41.117 N 143.094 E Depth 47.85 km (29.73 mi)

M 5.0 - 88 km SE of Sola, Vanuatu

rss:usgs-quakes-25primary63d ago wire ×2 kagi ↗

Time 2026-07-27 20:10:01 UTC 2026-07-27 20:10:01 UTC at epicenter Location 14.519 S 168.033 E Depth 10.00 km (6.21 mi)

M 2.6 - 111 km SE of Atka, Alaska

rss:usgs-quakes-25primary63d ago kagi ↗

Time 2026-07-27 00:26:46 UTC 2026-07-27 00:26:46 UTC at epicenter Location 51.388 N 173.248 W Depth 27.50 km (17.09 mi)

M 2.5 - 178 km WSW of Adak, Alaska

rss:usgs-quakes-25primary63d ago kagi ↗

Time 2026-07-27 00:35:26 UTC 2026-07-27 00:35:26 UTC at epicenter Location 51.419 N 179.100 W Depth 73.80 km (45.86 mi)

M 2.6 - 95 km SE of Akutan, Alaska

rss:usgs-quakes-25primary63d ago kagi ↗

Time 2026-07-27 00:55:16 UTC 2026-07-27 00:55:16 UTC at epicenter Location 53.532 N 164.750 W Depth 16.50 km (10.25 mi)

M 2.5 - 101 km SE of Atka, Alaska

rss:usgs-quakes-25primary63d ago kagi ↗

Time 2026-07-27 03:10:48 UTC 2026-07-27 03:10:48 UTC at epicenter Location 51.489 N 173.261 W Depth 20.00 km (12.43 mi)

M 3.7 - 100 km SE of Atka, Alaska

rss:usgs-quakes-25primary63d ago kagi ↗

ShakeMap - II Time 2026-07-27 03:22:50 UTC 2026-07-27 03:22:50 UTC at epicenter Location 51.516 N 173.245 W Depth 9.10 km (5.65 mi)

M 3.4 - 235 km WSW of Adak, Alaska

rss:usgs-quakes-25primary63d ago kagi ↗

Time 2026-07-27 05:02:35 UTC 2026-07-27 05:02:35 UTC at epicenter Location 51.351 N 179.931 W Depth 62.00 km (38.53 mi)

M 3.2 - 16 km SSW of Goldsmith, Texas

rss:usgs-quakes-25primary63d ago wire ×2 kagi ↗

DYFI? - III Time 2026-07-27 23:23:02 UTC 2026-07-27 23:23:02 UTC at epicenter Location 31.840 N 102.675 W Depth 4.07 km (2.53 mi)

M 2.5 - 7 km N of Beaumont, CA

rss:usgs-quakes-25primary63d ago kagi ↗

Time 2026-07-27 23:49:31 UTC 2026-07-27 23:49:31 UTC at epicenter Location 33.991 N 116.974 W Depth 9.51 km (5.91 mi)

M 4.4 - 12 km N of Honoria, Peru

rss:usgs-quakes-25primary63d ago kagi ↗

Time 2026-07-27 22:36:40 UTC 2026-07-27 22:36:40 UTC at epicenter Location 8.659 S 74.722 W Depth 125.57 km (78.02 mi)

M 5.3 - southern Mid-Atlantic Ridge

rss:usgs-quakes-25primary63d ago wire ×2 kagi ↗

Time 2026-07-28 01:27:51 UTC 2026-07-28 01:27:51 UTC at epicenter Location 12.778 S 14.510 W Depth 10.00 km (6.21 mi)

M 4.6 - 38 km S of Mendoza, Argentina

rss:usgs-quakes-25primary63d ago wire ×2 kagi ↗

DYFI? - IV Time 2026-07-28 01:37:42 UTC 2026-07-28 01:37:42 UTC at epicenter Location 33.238 S 68.877 W Depth 36.49 km (22.67 mi)

M 2.5 - 103 km SSE of Atka, Alaska

rss:usgs-quakes-25primary63d ago kagi ↗

Time 2026-07-27 21:56:44 UTC 2026-07-27 21:56:44 UTC at epicenter Location 51.307 N 173.761 W Depth 5.00 km (3.11 mi)

M 5.8 - 60 km SW of Puerto Madero, Mexico

rss:usgs-quakes-25primary63d ago wire ×2 kagi ↗

PAGER - GREEN ShakeMap - IV DYFI? - III Time 2026-07-28 05:35:17 UTC 2026-07-28 05:35:17 UTC at epicenter Location 14.284 N 92.761 W Depth 35.00 km (21.75 mi)

M 2.7 - 19 km S of Adak, Alaska

rss:usgs-quakes-25primary63d ago kagi ↗

Time 2026-07-27 07:47:44 UTC 2026-07-27 07:47:44 UTC at epicenter Location 51.697 N 176.603 W Depth 83.00 km (51.58 mi)

M 2.5 - 32 km WNW of Petrolia, CA

rss:usgs-quakes-25primary63d ago kagi ↗

Time 2026-07-28 09:35:08 UTC 2026-07-28 09:35:08 UTC at epicenter Location 40.458 N 124.621 W Depth 18.01 km (11.19 mi)

M 3.2 - 14 km SSE of La Tirana, Chile

rss:usgs-quakes-25primary63d ago kagi ↗

DYFI? - III Time 2026-07-28 06:05:52 UTC 2026-07-28 06:05:52 UTC at epicenter Location 20.396 S 70.063 W Depth 71.94 km (44.70 mi)

M 3.5 - 25 km E of Akhiok, Alaska

rss:usgs-quakes-25primary63d ago kagi ↗

ShakeMap - III Time 2026-07-28 15:03:55 UTC 2026-07-28 15:03:55 UTC at epicenter Location 56.988 N 153.761 W Depth 38.40 km (23.86 mi)

M 2.7 - 5 km S of Pāhala, Hawaii

rss:usgs-quakes-25primary63d ago kagi ↗

Time 2026-07-28 15:13:56 UTC 2026-07-28 15:13:56 UTC at epicenter Location 19.156 N 155.488 W Depth 29.75 km (18.49 mi)

M 4.5 - 92 km S of Hihifo, Tonga

rss:usgs-quakes-25primary62d ago wire ×2 kagi ↗

Time 2026-07-28 19:25:41 UTC 2026-07-28 19:25:41 UTC at epicenter Location 16.777 S 173.642 W Depth 123.19 km (76.55 mi)

M 2.9 - 68 km SSE of Adak, Alaska

rss:usgs-quakes-25primary62d ago kagi ↗

Time 2026-07-27 22:26:41 UTC 2026-07-27 22:26:41 UTC at epicenter Location 51.301 N 176.291 W Depth 17.30 km (10.75 mi)

M 2.5 - 44 km WSW of Carlsbad, CA

rss:usgs-quakes-25primary62d ago kagi ↗

Time 2026-07-28 22:15:03 UTC 2026-07-28 22:15:03 UTC at epicenter Location 33.010 N 117.784 W Depth 9.01 km (5.60 mi)

M 3.8 - 266 km SW of Adak, Alaska

rss:usgs-quakes-25primary62d ago kagi ↗

ShakeMap - IV Time 2026-07-28 22:18:39 UTC 2026-07-28 22:18:39 UTC at epicenter Location 50.115 N 179.216 W Depth 10.50 km (6.52 mi)

M 3.6 - 271 km SW of Adak, Alaska

rss:usgs-quakes-25primary62d ago kagi ↗

ShakeMap - IV Time 2026-07-28 22:18:38 UTC 2026-07-28 22:18:38 UTC at epicenter Location 50.052 N 179.195 W Depth 10.00 km (6.21 mi)

M 2.6 - 45 km SSE of Adak, Alaska

rss:usgs-quakes-25primary62d ago kagi ↗

Time 2026-07-28 00:39:08 UTC 2026-07-28 00:39:08 UTC at epicenter Location 51.491 N 176.411 W Depth 50.90 km (31.63 mi)

M 2.7 - 80 km SSE of Atka, Alaska

rss:usgs-quakes-25primary62d ago kagi ↗

Time 2026-07-28 00:38:32 UTC 2026-07-28 00:38:32 UTC at epicenter Location 51.528 N 173.747 W Depth 3.50 km (2.17 mi)

M 2.7 - 66 km SSE of Atka, Alaska

rss:usgs-quakes-25primary62d ago wire ×2 kagi ↗

ShakeMap - II Time 2026-07-28 12:22:38 UTC 2026-07-28 12:22:38 UTC at epicenter Location 51.665 N 173.769 W Depth 5.30 km (3.29 mi)

M 3.5 - 41 km SSE of Mākena, Hawaii

rss:usgs-quakes-25primary62d ago kagi ↗

DYFI? - I Time 2026-07-29 00:16:22 UTC 2026-07-29 00:16:22 UTC at epicenter Location 20.301 N 156.307 W Depth 7.77 km (4.83 mi)

M 2.8 - 98 km SSE of Atka, Alaska

rss:usgs-quakes-25primary62d ago kagi ↗

Time 2026-07-28 04:13:23 UTC 2026-07-28 04:13:23 UTC at epicenter Location 51.418 N 173.525 W Depth 5.00 km (3.11 mi)

M 2.6 - 130 km SW of Adak, Alaska

rss:usgs-quakes-25primary62d ago kagi ↗

Time 2026-07-28 05:50:46 UTC 2026-07-28 05:50:46 UTC at epicenter Location 51.074 N 178.016 W Depth 19.20 km (11.93 mi)

M 5.4 - 153 km NE of Neiafu, Tonga

rss:usgs-quakes-25primary62d ago wire ×2 kagi ↗

Time 2026-07-29 00:47:59 UTC 2026-07-29 00:47:59 UTC at epicenter Location 17.826 S 172.818 W Depth 10.00 km (6.21 mi)

M 2.5 - 8 km ESE of Cloverdale, CA

rss:usgs-quakes-25primary62d ago wire ×2 kagi ↗

Time 2026-07-29 02:40:44 UTC 2026-07-29 02:40:44 UTC at epicenter Location 38.787 N 122.923 W Depth 4.27 km (2.65 mi)

M 5.1 - Kermadec Islands region

rss:usgs-quakes-25primary62d ago wire ×2 kagi ↗

Time 2026-07-29 03:30:50 UTC 2026-07-29 03:30:50 UTC at epicenter Location 28.680 S 176.713 W Depth 35.00 km (21.75 mi)

M 4.9 - 209 km ENE of Levuka, Fiji

rss:usgs-quakes-25primary62d ago wire ×2 kagi ↗

Time 2026-07-29 04:07:22 UTC 2026-07-29 04:07:22 UTC at epicenter Location 17.657 S 178.754 W Depth 524.64 km (326.00 mi)

M 3.1 - 210 km ESE of Atka, Alaska

rss:usgs-quakes-25primary62d ago kagi ↗

Time 2026-07-29 01:16:55 UTC 2026-07-29 01:16:55 UTC at epicenter Location 51.710 N 171.241 W Depth 11.60 km (7.21 mi)

M 3.0 - 167 km W of Adak, Alaska

rss:usgs-quakes-25primary62d ago kagi ↗

Time 2026-07-29 03:20:09 UTC 2026-07-29 03:20:09 UTC at epicenter Location 51.686 N 179.048 W Depth 9.30 km (5.78 mi)

M 4.6 - 102 km WNW of Aykol, China

rss:usgs-quakes-25primary62d ago wire ×2 kagi ↗

Time 2026-07-29 06:09:57 UTC 2026-07-29 06:09:57 UTC at epicenter Location 41.181 N 78.959 E Depth 10.00 km (6.21 mi)

M 2.8 - 113 km WSW of Adak, Alaska

rss:usgs-quakes-25primary62d ago wire ×2 kagi ↗

Time 2026-07-28 10:57:08 UTC 2026-07-28 10:57:08 UTC at epicenter Location 51.476 N 178.150 W Depth 10.80 km (6.71 mi)

M 2.8 - 77 km SSE of Atka, Alaska

rss:usgs-quakes-25primary62d ago kagi ↗

Time 2026-07-28 10:55:07 UTC 2026-07-28 10:55:07 UTC at epicenter Location 51.538 N 173.834 W Depth 5.00 km (3.11 mi)

M 2.8 - 10 km SSW of Lamont, CA

rss:usgs-quakes-25primary62d ago kagi ↗

Time 2026-07-29 09:35:20 UTC 2026-07-29 09:35:20 UTC at epicenter Location 35.181 N 118.971 W Depth 13.27 km (8.25 mi)

M 3.1 - 69 km SSE of Atka, Alaska

rss:usgs-quakes-25primary62d ago kagi ↗

Time 2026-07-28 10:55:08 UTC 2026-07-28 10:55:08 UTC at epicenter Location 51.606 N 173.860 W Depth 10.00 km (6.21 mi)

M 5.4 - 53 km E of Rapu-Rapu, Philippines

rss:usgs-quakes-25primary62d ago wire ×2 kagi ↗

PAGER - GREEN ShakeMap - IV DYFI? - II Time 2026-07-29 15:10:02 UTC 2026-07-29 15:10:02 UTC at epicenter Location 13.138 N 124.614 E Depth 46.28 km (28.76 mi)