M1.6 earthquake 30km WNW of Ludlow, CA

Magnitude

1.6 (Mc), micro

Magnitude from

Southern California Seismic Network

Local time

Fri, Feb 27, 1981, 11:28 PM PST

UTC

1981-02-28 07:28:39 UTC

Depth

2.8 km (1.7 mi), shallow

Epicenter

34.802° N, 116.467° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.8 km horizontally, 1.3 km in depth

Depth from

From location

Station coverage gap

159°

Stations used

15

• Yermo, CaliforniaPopulation 623. Forecast34 kmESE
• Barstow, CaliforniaPopulation 23,692. Forecast52 kmESE
• Victorville, CaliforniaPopulation 122,225. Forecast81 kmENE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast183 kmENE

After

1. 1.77km SSE of Big Bear Lake, CAMon, Mar 2, 9:50 PM PST · 16652 days ago · 10 km deep · 80 km away
2. 1.912km WSW of Morongo Valley, CATue, Mar 3, 8:17 PM PST · 16651 days ago · 15 km deep · 92 km away
3. 1.612km WSW of Morongo Valley, CATue, Mar 3, 9:51 PM PST · 16651 days ago · 15 km deep · 92 km away
4. 1.624km NNW of Yucca Valley, CAMon, Mar 9, 5:49 PM PST · 16645 days ago · 2 km deep · 54 km away
5. 1.614km NE of Thousand Palms, CAMon, Mar 9, 9:12 PM PST · 16645 days ago · 0 km deep · 100 km away
6. 1.59km S of Yucca Valley, CATue, Mar 10, 12:42 AM PST · 16644 days ago · 8 km deep · 86 km away
7. 1.84km NNE of Cabazon, CATue, Mar 10, 2:47 AM PST · 16644 days ago · 14 km deep · 99 km away
8. 1.512km SSE of Joshua Tree, CAThu, Mar 12, 1:05 AM PST · 16642 days ago · -1 km deep · 86 km away
9. 2.022km N of Yucca Valley, CASat, Mar 14, 1:52 PM PST · 16640 days ago · -1 km deep · 55 km away
10. 1.66km NNE of Cabazon, CAMon, Mar 16, 11:26 AM PST · 16638 days ago · 13 km deep · 97 km away
11. 2.011km ENE of Cabazon, CAMon, Mar 16, 10:41 PM PST · 16638 days ago · 15 km deep · 95 km away
12. 3.76km NNE of Yucaipa, CATue, Mar 17, 10:07 PM PST · 16637 days ago · 10 km deep · 95 km away
13. 1.618km ENE of Lucerne Valley, CAWed, Mar 18, 5:23 PM PST · 16636 days ago · 4 km deep · 43 km away
14. 1.628km N of Twentynine Palms, CAThu, Mar 19, 3:50 AM PST · 16635 days ago · 5 km deep · 59 km away
15. 1.822km SW of Ludlow, CAFri, Mar 20, 12:38 PM PST · 16634 days ago · 5 km deep · 24 km away
16. 1.89km ENE of Lucerne Valley, CASun, Mar 22, 8:49 AM PST · 16632 days ago · 3 km deep · 52 km away
17. 1.633km S of Fort Irwin, CASun, Mar 22, 4:13 PM PST · 16632 days ago · 5 km deep · 24 km away
18. 1.611km S of Joshua Tree, CAWed, Mar 25, 3:29 AM PST · 16629 days ago · 5 km deep · 86 km away
19. 1.75km ENE of Running Springs, CAThu, Mar 26, 7:22 PM PST · 16628 days ago · 11 km deep · 84 km away
20. 1.812km WSW of Morongo Valley, CAThu, Mar 26, 9:43 PM PST · 16628 days ago · 15 km deep · 92 km away
21. 1.527km E of Twentynine Palms, CAFri, Mar 27, 2:46 AM PST · 16627 days ago · 5 km deep · 97 km away
22. 2.912km N of Thousand Palms, CAFri, Mar 27, 7:01 AM PST · 16627 days ago · 3 km deep · 98 km away
23. 2.134km N of Yucca Valley, CAFri, Apr 3, 9:18 AM PST · 16620 days ago · -1 km deep · 43 km away
24. 1.920km SSE of Fort Irwin, CASun, Apr 5, 10:52 PM PST · 16618 days ago · 5 km deep · 36 km away
25. 1.724km N of Yucca Valley, CATue, Apr 7, 5:50 AM PST · 16616 days ago · 0 km deep · 53 km away
26. 2.47km NE of Cabazon, CATue, Apr 7, 6:32 AM PST · 16616 days ago · 16 km deep · 97 km away
27. 1.624km NNW of Yucca Valley, CATue, Apr 7, 5:38 PM PST · 16616 days ago · 0 km deep · 54 km away
28. 1.927km WSW of Amboy, CAFri, Apr 10, 7:50 AM PST · 16613 days ago · 4 km deep · 54 km away
29. 1.528km WSW of Amboy, CAFri, Apr 10, 10:25 AM PST · 16613 days ago · 4 km deep · 54 km away
30. 1.719km SSE of Joshua Tree, CAFri, Apr 10, 1:28 PM PST · 16613 days ago · -1 km deep · 94 km away
31. 1.719km SSE of Joshua Tree, CASat, Apr 11, 10:13 AM PST · 16612 days ago · -1 km deep · 94 km away
32. 1.712km SSE of Twentynine Palms, CASat, Apr 11, 9:13 PM PST · 16612 days ago · 2 km deep · 94 km away
33. 1.739km SSE of Fort Irwin, CASun, Apr 12, 12:31 PM PST · 16611 days ago · 5 km deep · 16 km away
34. 1.68km NNE of Banning, CATue, Apr 14, 2:21 AM PST · 16609 days ago · 17 km deep · 96 km away
35. 2.016km E of Big Bear City, CATue, Apr 14, 2:04 PM PST · 16609 days ago · 5 km deep · 65 km away
36. 1.510km ENE of Barstow, CAFri, Apr 17, 2:12 AM PST · 16606 days ago · 4 km deep · 43 km away
37. 1.919km SSE of Joshua Tree, CASun, Apr 19, 3:10 PM PST · 16604 days ago · -1 km deep · 95 km away
38. 1.611km E of Barstow, CATue, Apr 21, 1:35 PM PST · 16602 days ago · 3 km deep · 42 km away
39. 1.511km E of Barstow, CAWed, Apr 22, 4:28 AM PST · 16601 days ago · 4 km deep · 42 km away
40. 1.78km WNW of Twentynine Palms, CAWed, Apr 22, 8:01 AM PST · 16601 days ago · 10 km deep · 75 km away
41. 1.522km ENE of Barstow, CAThu, Apr 23, 3:23 PM PST · 16600 days ago · 5 km deep · 33 km away
42. 1.810km E of Barstow, CAThu, Apr 23, 5:12 PM PST · 16600 days ago · 4 km deep · 42 km away
43. 2.111km SW of Morongo Valley, CAFri, Apr 24, 10:57 AM PST · 16599 days ago · 12 km deep · 93 km away
44. 2.37km NNE of Running Springs, CAFri, Apr 24, 3:54 PM PST · 16599 days ago · 4 km deep · 82 km away
45. 1.75km ENE of Cabazon, CAMon, Apr 27, 10:12 AM PDT · 16596 days ago · 13 km deep · 99 km away
46. 1.724km N of Yucca Valley, CAMon, Apr 27, 11:39 AM PDT · 16596 days ago · 1 km deep · 53 km away

Before

1. 1.518km S of Joshua Tree, CAFri, Feb 27, 3:02 AM PST · 16655 days ago · 2 km deep · 93 km away
2. 1.918km SSE of Joshua Tree, CAThu, Feb 26, 4:39 PM PST · 16656 days ago · 5 km deep · 93 km away
3. 1.69km WNW of Twentynine Palms, CAThu, Feb 26, 8:44 AM PST · 16656 days ago · 8 km deep · 75 km away
4. 1.722km NNW of Yucca Valley, CAThu, Feb 26, 1:10 AM PST · 16656 days ago · 2 km deep · 55 km away
5. 2.211km N of Yucca Valley, CAFri, Feb 20, 7:05 AM PST · 16662 days ago · -1 km deep · 65 km away
6. 1.514km SSE of Joshua Tree, CAThu, Feb 19, 9:26 PM PST · 16663 days ago · -1 km deep · 89 km away
7. 1.76km ENE of Running Springs, CAWed, Feb 18, 5:36 PM PST · 16664 days ago · 7 km deep · 83 km away
8. 1.718km ENE of Lucerne Valley, CASun, Feb 15, 1:45 PM PST · 16667 days ago · 1 km deep · 43 km away
9. 1.910km NE of Desert Hot Springs, CASun, Feb 15, 6:15 AM PST · 16667 days ago · 6 km deep · 87 km away
10. 2.210km S of Yucca Valley, CASun, Feb 15, 2:28 AM PST · 16667 days ago · 5 km deep · 86 km away
11. 2.418km ENE of Lucerne Valley, CAThu, Feb 12, 10:30 PM PST · 16670 days ago · -1 km deep · 43 km away
12. 1.518km NE of Lucerne Valley, CAWed, Feb 11, 10:17 AM PST · 16671 days ago · 4 km deep · 43 km away
13. 1.722km NNE of Barstow, CATue, Feb 10, 8:16 PM PST · 16672 days ago · 5 km deep · 50 km away
14. 1.910km NNW of Twentynine Palms, CATue, Feb 10, 8:33 AM PST · 16672 days ago · 0 km deep · 72 km away
15. 1.916km ENE of Boron, CAMon, Feb 9, 1:56 AM PST · 16673 days ago · 5 km deep · 96 km away
16. 2.118km ENE of Lucerne Valley, CASun, Feb 8, 9:07 PM PST · 16674 days ago · -2 km deep · 43 km away
17. 2.912km NNE of Cabazon, CAFri, Feb 6, 4:32 AM PST · 16676 days ago · 12 km deep · 91 km away
18. 2.010km NE of Lake Arrowhead, CAWed, Feb 4, 7:36 AM PST · 16678 days ago · 5 km deep · 80 km away
19. 1.510km NNW of Twentynine Palms, CAWed, Feb 4, 6:00 AM PST · 16678 days ago · 9 km deep · 73 km away
20. 2.76km NNE of Cabazon, CAMon, Feb 2, 4:25 AM PST · 16680 days ago · 6 km deep · 97 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci531326. Read Sun, Oct 4, 2026, 6:28 PM UTC.