| Date & time | Oct 21, 1942 16:22:12 UTC |
| Local time at epicenter | |
| Status | Confirmed |
| Magnitude | 6.6 |
| Depth | 6.0 km |
| Epicenter latitude / longitude | 32.97533°N / 115.78533°W  (Imperial, California, United States) |
| Antipode | 32.975°S / 64.215°E |
| Shaking intensity | Very strong shaking near epicenter |
| Felt | 0 reports |
| Primary data source | USGS (United States Geological Survey) |
| Nearest volcano | Salton Buttes (29 km / 18 mi) |
| Nearby towns and cities | 17 km (10 mi) WSW of Westmorland (pop: 2,270) | Show on map | Quakes nearby 24 km (15 mi) W of Brawley (Imperial County) (pop: 25,900) | Show on map | Quakes nearby 25 km (15 mi) NW of Imperial (pop: 17,100) | Show on map | Quakes nearby 29 km (18 mi) NW of El Sentro (pop: 44,000) | Show on map | Quakes nearby 42 km (26 mi) NW of Calexico (pop: 40,100) | Show on map | Quakes nearby 86 km (54 mi) SSE of Coachella (pop: 44,600) | Show on map | Quakes nearby 92 km (57 mi) SSE of Indian Wells (pop: 87,500) | Show on map | Quakes nearby 100 km (62 mi) SE of Palm Desert (pop: 51,900) | Show on map | Quakes nearby 132 km (82 mi) ENE of San Diego (pop: 1,394,900) | Show on map | Quakes nearby 808 km (502 mi) SE of Sacramento (pop: 490,700) | Show on map | Quakes nearby |
| Estimated seismic energy released | 5 x 1014 joules (139 gigawatt hours, equivalent to 1.2 x 105 tons of TNT or 7.5 atomic bombs!) | about seismic energy |
| Mag. | Depth | Location | Source |
| 6.6 | 6 km | 17km WSW of Westmorland, CA (USA) | USGS |
Date and time | Mag Depth | Location | Details |
| Apr 14, 1943 08:47 80 years ago | 3.0 6 km | San Diego County, 36 mi NW of El Sentro, Imperial County, California, USA | More |
| Apr 10, 1943 18:31 80 years ago | 3.5 6 km | 14 mi N of Ocotillo, Imperial County, California, USA | More |
| Apr 8, 1943 10:49 80 years ago | 3.2 6 km | 13 mi E of Indian Wells, Riverside County, California, USA | More |
| Apr 7, 1943 03:46 80 years ago | 3.6 6 km | San Diego County, 17 mi NW of Ocotillo, Imperial County, California, USA | More |
| Apr 6, 1943 09:03 80 years ago | 2.9 6 km | 13 mi E of Hemet, Riverside County, California, USA | More |
| Mar 30, 1943 10:35 80 years ago | 2.6 6 km | 11km S of Borrego Springs, CA (USA) | More |
| Mar 29, 1943 08:27 80 years ago | 2.6 6 km | 21km NNW of Ocotillo, CA (USA) | More |
| Mar 29, 1943 06:41 80 years ago | 2.9 6 km | 20 mi W of Brawley, Imperial County, California, USA | More |
| Mar 26, 1943 06:29 80 years ago | 3.7 6 km | 18 mi S of Salton City, Imperial County, California, USA | More |
| Mar 18, 1943 23:06 80 years ago | 3.2 4.6 km | 7.1 mi SE of Anza, Riverside County, California, USA | More |
| Mar 17, 1943 00:56 80 years ago | 3.5 6 km | 1.7 mi S of Westmorland, Imperial County, California, USA | More |
| Mar 17, 1943 00:52 80 years ago | 3.3 6 km | 2.1 mi E of Westmorland, Imperial County, California, USA | More |
| Mar 17, 1943 00:40 80 years ago | 4.6 6 km | 1.2 km SE of Ejido Otilio Montaño, Mexico | More |
| Mar 15, 1943 14:09 80 years ago | 3.6 6 km | San Diego County, 14 mi NW of Ocotillo, Imperial County, California, USA | More |
| Mar 9, 1943 00:19 80 years ago | 3.1 6 km | 8.1 mi S of Borrego Springs, San Diego County, California, USA | More |
| Mar 7, 1943 20:56 80 years ago | 3.7 6 km | 6.1 mi N of Ocotillo, Imperial County, California, USA | More |
| Mar 7, 1943 10:06 80 years ago | 2.7 6 km | 10 mi S of Borrego Springs, San Diego County, California, USA | More |
| Mar 3, 1943 13:05 80 years ago | 3.1 6 km | 10.7 mi SE of Twentynine Palms, San Bernardino County, California, USA | More |
| Mar 3, 1943 10:50 80 years ago | 2.7 6 km | 3.4 mi NW of Indian Wells, Riverside County, California, USA | More |
| Mar 3, 1943 07:29 80 years ago | 3.4 6 km | 4.4 mi N of Indian Wells, Riverside County, California, USA | More |
| Feb 28, 1943 06:35 80 years ago | 3.4 6 km | 12 mi N of Ocotillo, Imperial County, California, USA | More |
| Feb 25, 1943 06:19 80 years ago | 3.5 6 km | San Diego County, 14 mi NW of Ocotillo, Imperial County, California, USA | More |
| Feb 24, 1943 01:58 80 years ago | 3.6 6 km | San Diego County, 12 mi NW of Ocotillo, Imperial County, California, USA | More |
| Feb 19, 1943 08:48 80 years ago | 2.9 6 km | 38 mi E of El Cajon, San Diego County, California, USA | More |
| Feb 19, 1943 01:06 80 years ago | 3.1 6 km | 26 mi W of El Sentro, Imperial County, California, USA | More |
| Feb 17, 1943 23:44 80 years ago | 3.2 6 km | 12 mi E of Salton City, Imperial County, California, USA | More |
| Feb 17, 1943 10:21 80 years ago | 3.1 1.8 km | 6.4 mi NW of Julian, San Diego County, California, USA | More |
| Feb 16, 1943 21:45 80 years ago | 2.7 6 km | 5.3 mi S of Borrego Springs, San Diego County, California, USA | More |
| Feb 16, 1943 21:44 80 years ago | 2.6 6 km | 11km SE of Borrego Springs, CA (USA) | More |
| Feb 10, 1943 23:04 80 years ago | 2.9 6 km | San Diego County, 35 mi W of El Sentro, Imperial County, California, USA | More |
| Feb 10, 1943 02:59 80 years ago | 2.9 6 km | San Diego County, 36 mi W of El Sentro, Imperial County, California, USA | More |
| Feb 5, 1943 19:08 80 years ago | 3.3 6 km | San Diego County, 35 mi NW of El Sentro, Imperial County, California, USA | More |
| Feb 4, 1943 12:24 80 years ago | 2.7 6 km | 21 mi E of Coachella, Riverside County, California, USA | More |
| Feb 1, 1943 05:18 80 years ago | 2.9 6 km | San Diego County, 38 mi NW of El Sentro, Imperial County, California, USA | More |
| Feb 1, 1943 05:06 80 years ago | 2.9 6 km | San Diego County, 38 mi NW of El Sentro, Imperial County, California, USA | More |
| Jan 28, 1943 23:59 80 years ago | 2.7 6 km | 5.6 mi SW of Borrego Springs, San Diego County, California, USA | More |
| Jan 26, 1943 23:42 80 years ago | 2.8 6 km | 6.6 mi W of Salton City, Imperial County, California, USA | More |
| Jan 19, 1943 04:15 80 years ago | 2.9 6 km | San Diego County, 36 mi NW of El Sentro, Imperial County, California, USA | More |
| Jan 17, 1943 06:30 80 years ago | 2.9 6 km | 25 mi W of El Sentro, Imperial County, California, USA | More |
| Jan 9, 1943 13:46 80 years ago | 2.6 6 km | 21km NW of Ocotillo, CA (USA) | More |
| Jan 8, 1943 01:24 80 years ago | 3.0 6 km | 20 mi SE of Borrego Springs, San Diego County, California, USA | More |
| Jan 8, 1943 00:24 80 years ago | 3.7 6 km | San Diego County, 14 mi NW of Ocotillo, Imperial County, California, USA | More |
| Jan 7, 1943 02:19 80 years ago | 3.1 6 km | 8.7 mi SE of Borrego Springs, San Diego County, California, USA | More |
| Jan 6, 1943 14:52 80 years ago | 2.9 6 km | San Diego County, 31 mi W of El Sentro, Imperial County, California, USA | More |
| Jan 4, 1943 06:12 80 years ago | 3.1 6 km | San Diego County, 15 mi NW of Ocotillo, Imperial County, California, USA | More |
| Jan 2, 1943 14:11 80 years ago | 4.4 6 km | 17 mi S of La Quinta, Riverside County, California, USA | More |
| Dec 29, 1942 19:10 80 years ago | 3.2 6 km | San Diego County, 36 mi W of El Sentro, Imperial County, California, USA | More |
| Dec 24, 1942 14:46 80 years ago | 3.3 6 km | 26 mi W of El Sentro, Imperial County, California, USA | More |
| Dec 23, 1942 07:43 80 years ago | 3.4 6 km | 8.3 mi SE of Salton City, Imperial County, California, USA | More |
| Dec 22, 1942 22:32 80 years ago | 2.6 6 km | 21km SSE of Ocotillo Wells, CA (USA) | More |
| Dec 19, 1942 13:43 80 years ago | 3.0 6 km | 15 mi NW of El Sentro, Imperial County, California, USA | More |
| Dec 19, 1942 02:14 80 years ago | 3.3 6 km | 13 mi S of Salton City, Imperial County, California, USA | More |
| Dec 15, 1942 21:38 80 years ago | 3.6 6 km | 4.5 km E of Ejido Jacumé, Tecate, Baja California, Mexico | More |
| Dec 14, 1942 10:38 80 years ago | 3.5 0.3 km | 16 km E of Cereso del Hongo, Tecate, Baja California, Mexico | More |
| Dec 13, 1942 23:25 80 years ago | 3.4 6 km | 12 mi NW of Ocotillo, Imperial County, California, USA | More |
| Dec 12, 1942 17:49 80 years ago | 3.0 6 km | 12 mi NE of Bombay Beach, Imperial County, California, USA | More |
| Dec 10, 1942 11:35 80 years ago | 2.9 6 km | 48 km SW of Mexicali, Baja California, Mexico | More |
| Dec 10, 1942 01:59 80 years ago | 3.1 6 km | San Diego County, 14 mi NW of Ocotillo, Imperial County, California, USA | More |
| Dec 2, 1942 18:52 80 years ago | 2.9 6 km | 7.3 mi S of Salton City, Imperial County, California, USA | More |
| Dec 2, 1942 18:41 80 years ago | 3.0 6 km | 7.3 mi S of Salton City, Imperial County, California, USA | More |
| Dec 2, 1942 18:39 80 years ago | 3.3 6 km | 7.3 mi S of Salton City, Imperial County, California, USA | More |
| Dec 2, 1942 13:34 80 years ago | 2.9 6 km | 7.3 mi S of Salton City, Imperial County, California, USA | More |
| Nov 27, 1942 23:12 80 years ago | 3.2 0 km | 0.8 mi W of Anza, Riverside County, California, USA | More |
| Nov 22, 1942 06:39 80 years ago | 3.5 6 km | San Diego County, 10.9 mi NW of Ocotillo, Imperial County, California, USA | More |
| Nov 21, 1942 07:20 80 years ago | 3.4 6 km | San Diego County, 13 mi NW of Ocotillo, Imperial County, California, USA | More |
| Nov 21, 1942 06:57 80 years ago | 3.0 6 km | 13 mi N of Ocotillo, Imperial County, California, USA | More |
| Nov 20, 1942 07:00 80 years ago | 3.3 6 km | San Diego County, 32 mi W of El Sentro, Imperial County, California, USA | More |
| Nov 19, 1942 12:15 80 years ago | 3.4 6 km | 2.1 mi SW of Borrego Springs, San Diego County, California, USA | More |
| Nov 12, 1942 17:56 80 years ago | 4.2 6 km | 52 km NE of Ensenada, Baja California, Mexico | More |
| Nov 12, 1942 00:07 80 years ago | 4.2 6 km | 15 mi W of El Sentro, Imperial County, California, USA | More |
| Nov 7, 1942 04:39 80 years ago | 4.0 6 km | San Diego County, 8.6 mi NW of Ocotillo, Imperial County, California, USA | More |
| Nov 5, 1942 14:39 80 years ago | 3.0 6 km | 8.1 mi NW of Ocotillo, Imperial County, California, USA | More |
| Nov 3, 1942 10:18 80 years ago | 4.0 6 km | 13 mi N of Ocotillo, Imperial County, California, USA | More |
| Nov 3, 1942 05:06 80 years ago | 4.4 6 km | 24 mi NW of El Sentro, Imperial County, California, USA | More |
| Nov 2, 1942 12:59 80 years ago | 4.5 6 km | 5.3 mi NW of El Sentro, Imperial County, California, USA | More |
| Nov 1, 1942 02:21 80 years ago | 2.8 6 km | 31 mi W of El Sentro, Imperial County, California, USA | More |
| Oct 31, 1942 16:40 80 years ago | 2.7 6 km | 10.7 mi E of Pine Valley, San Diego County, California, USA | More |
| Oct 31, 1942 15:07 80 years ago | 4.0 6 km | 15 mi NE of Pine Valley, San Diego County, California, USA | More |
| Oct 30, 1942 05:35 80 years ago | 4.4 6 km | 19 mi SE of Borrego Springs, San Diego County, California, USA | More |
| Oct 29, 1942 20:51 80 years ago | 4.1 6 km | 20 mi SE of Borrego Springs, San Diego County, California, USA | More |
| Oct 29, 1942 17:35 80 years ago | 3.7 6 km | San Diego County, 16 mi SW of Salton City, Imperial County, California, USA | More |
| Oct 29, 1942 16:21 80 years ago | 4.5 6 km | 23 mi NW of El Sentro, Imperial County, California, USA | More |
| Oct 29, 1942 15:56 80 years ago | 4.4 6 km | San Diego County, 18 mi S of Salton City, Imperial County, California, USA | More |
| Oct 26, 1942 06:15 80 years ago | 3.6 6 km | 13 mi NW of Calipatria, Imperial County, California, USA | More |
| Oct 26, 1942 04:34 80 years ago | 3.6 6 km | San Diego County, 16 mi NW of Ocotillo, Imperial County, California, USA | More |
| Oct 26, 1942 03:43 80 years ago | 3.7 6 km | 5.3 mi W of Calipatria, Imperial County, California, USA | More |
| Oct 26, 1942 03:21 80 years ago | 3.3 6 km | 10.3 mi W of Calipatria, Imperial County, California, USA | More |
| Oct 26, 1942 03:02 80 years ago | 4.2 6 km | 7.5 mi E of Salton City, Imperial County, California, USA | More |
| Oct 26, 1942 02:54 80 years ago | 3.3 6 km | 9.3 mi W of Calipatria, Imperial County, California, USA | More |
| Oct 25, 1942 18:59 80 years ago | 3.9 6 km | San Diego County, 16 mi NW of Ocotillo, Imperial County, California, USA | More |
| Oct 24, 1942 09:30 80 years ago | 3.4 6 km | 10.6 mi W of Calipatria, Imperial County, California, USA | More |
| Oct 23, 1942 01:11 80 years ago | 3.7 6 km | San Diego County, 13 mi N of Ocotillo, Imperial County, California, USA | More |
| Oct 22, 1942 18:13 80 years ago | 4.7 6 km | 27 mi W of El Sentro, Imperial County, California, USA | More |
| Oct 22, 1942 12:55 80 years ago | 3.7 6 km | 17 mi W of Brawley, Imperial County, California, USA | More |
| Oct 22, 1942 12:36 80 years ago | 3.5 6 km | 29 mi NW of El Sentro, Imperial County, California, USA | More |
| Oct 22, 1942 11:39 80 years ago | 3.8 6 km | 15 mi W of Brawley, Imperial County, California, USA | More |
| Oct 22, 1942 07:00 80 years ago | 3.2 6 km | San Diego County, 14 mi N of Ocotillo, Imperial County, California, USA | More |
| Oct 22, 1942 02:02 80 years ago | 4.4 6 km | 7.8 mi N of Niland, Imperial County, California, USA | More |
| Oct 22, 1942 01:50 80 years ago | 5.6 6 km | 3.6 mi NW of Niland, Imperial County, California, USA | More |
| Oct 21, 1942 22:50 80 years ago | 3.8 6 km | San Diego County, 14 mi NW of Ocotillo, Imperial County, California, USA | More |
| Oct 21, 1942 21:49 80 years ago | 4.1 6 km | 14 mi NE of Pine Valley, San Diego County, California, USA | More |
| Oct 21, 1942 19:10 80 years ago | 4.5 6 km | 9.1 mi NW of Ocotillo, Imperial County, California, USA | More |
| Oct 21, 1942 16:38 80 years ago | 4.5 6 km | 26 mi NW of El Sentro, Imperial County, California, USA | More |
| Oct 21, 1942 16:34 80 years ago | 4.3 6 km | 31 mi W of El Sentro, Imperial County, California, USA | More |
| Oct 21, 1942 16:26 80 years ago | 4.5 6 km | San Diego County, 30 mi W of El Sentro, Imperial County, California, USA | More |
| Oct 21, 1942 16:25 80 years ago | 4.6 6 km | 8.6 mi W of Brawley, Imperial County, California, USA | More |
