M1.6 earthquake 9km W of Palomar Observatory, CA

Magnitude

1.6 (ML, local (Richter)), micro

Magnitude from

Southern California Seismic Network

Local time

Sun, Apr 18, 2021, 3:17 AM PDT

UTC

2021-04-18 10:17:30 UTC

Depth

7.8 km (4.9 mi), shallow

Epicenter

33.358° N, 116.964° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.6 km in depth

Magnitude uncertainty

±0.11

Depth from

From location

Station coverage gap

25°

Stations used

77

• Aguanga, CaliforniaPopulation 1,128. Forecast13 kmSW
• Temecula, CaliforniaPopulation 110,003. Forecast23 kmSE
• San Diego, CaliforniaPopulation 1,404,452. Forecast74 kmNNE

After

1. 1.69km W of Palomar Observatory, CASun, Apr 18, 4:41 AM PDT · 1994 days ago · 9 km deep · 0 km away
2. 1.79km SSW of Idyllwild, CASun, Apr 18, 9:52 AM PDT · 1994 days ago · 14 km deep · 40 km away
3. 1.56km NNE of Borrego Springs, CAMon, Apr 19, 9:45 AM PDT · 1993 days ago · 12 km deep · 58 km away
4. 1.86km NNE of Borrego Springs, CAMon, Apr 19, 9:45 AM PDT · 1993 days ago · 11 km deep · 57 km away
5. 1.618km NNE of Indio, CAMon, Apr 19, 12:49 PM PDT · 1993 days ago · 8 km deep · 95 km away
6. 1.831km E of Avalon, CAMon, Apr 19, 4:07 PM PDT · 1993 days ago · 15 km deep · 96 km away
7. 1.56km NNW of San Jacinto, CAMon, Apr 19, 7:12 PM PDT · 1993 days ago · 13 km deep · 52 km away
8. 2.73km WSW of Redlands, CATue, Apr 20, 12:03 AM PDT · 1993 days ago · 16 km deep · 80 km away · felt by 27
9. 1.811km E of Yorba Linda, CATue, Apr 20, 2:11 AM PDT · 1992 days ago · 9 km deep · 89 km away
10. 1.66km SE of Loma Linda, CAWed, Apr 21, 6:11 PM PDT · 1991 days ago · 11 km deep · 76 km away
11. 1.94km SE of Yucaipa, CAWed, Apr 21, 6:46 PM PDT · 1991 days ago · 17 km deep · 73 km away
12. 2.314km SE of Anza, CAWed, Apr 21, 7:37 PM PDT · 1991 days ago · 11 km deep · 36 km away
13. 1.713km ESE of Desert Hot Springs, CAThu, Apr 22, 2:22 AM PDT · 1990 days ago · 5 km deep · 85 km away
14. 1.616km NE of Indio, CAThu, Apr 22, 11:11 PM PDT · 1990 days ago · 1 km deep · 96 km away
15. 1.61km N of Wildomar, CAFri, Apr 23, 10:46 AM PDT · 1989 days ago · 6 km deep · 41 km away
16. 1.88km N of Anza, CASat, Apr 24, 4:24 AM PDT · 1988 days ago · 16 km deep · 39 km away
17. 2.516km NE of Indio, CASat, Apr 24, 10:31 PM PDT · 1988 days ago · 2 km deep · 96 km away · felt by 1
18. 2.516km NE of Indio, CASat, Apr 24, 11:17 PM PDT · 1988 days ago · 2 km deep · 96 km away · felt by 1
19. 2.09km NE of Aguanga, CASun, Apr 25, 2:29 AM PDT · 1987 days ago · 6 km deep · 22 km away · felt by 1
20. 1.610km SSW of Idyllwild, CASun, Apr 25, 2:57 PM PDT · 1987 days ago · 14 km deep · 38 km away
21. 2.14km NE of Running Springs, CASun, Apr 25, 7:25 PM PDT · 1987 days ago · 2 km deep · 97 km away · felt by 3
22. 1.610km NNE of Ocotillo Wells, CASun, Apr 25, 8:24 PM PDT · 1987 days ago · 7 km deep · 84 km away
23. 1.610km SSW of Idyllwild, CASun, Apr 25, 9:51 PM PDT · 1987 days ago · 14 km deep · 38 km away
24. 1.610km NE of Aguanga, CAMon, Apr 26, 4:39 PM PDT · 1986 days ago · 3 km deep · 23 km away
25. 1.811km NE of Julian, CAMon, Apr 26, 10:25 PM PDT · 1986 days ago · 8 km deep · 47 km away
26. 2.09km NE of Aguanga, CATue, Apr 27, 2:50 AM PDT · 1985 days ago · 3 km deep · 22 km away
27. 1.916km NE of Indio, CATue, Apr 27, 4:43 AM PDT · 1985 days ago · 2 km deep · 96 km away
28. 2.016km NE of Indio, CATue, Apr 27, 9:49 AM PDT · 1985 days ago · 2 km deep · 96 km away
29. 1.93km NE of Lake Henshaw, CATue, Apr 27, 3:51 PM PDT · 1985 days ago · 5 km deep · 23 km away
30. 2.014km SW of Coronado, CATue, Apr 27, 7:24 PM PDT · 1985 days ago · 16 km deep · 90 km away · felt by 2
31. 1.59km N of Banning, CATue, Apr 27, 11:41 PM PDT · 1985 days ago · 15 km deep · 73 km away
32. 1.610km S of Borrego Springs, CAWed, Apr 28, 2:35 AM PDT · 1984 days ago · 6 km deep · 59 km away
33. 3.510km S of Borrego Springs, CAWed, Apr 28, 3:50 AM PDT · 1984 days ago · 7 km deep · 58 km away · felt by 283
34. 1.59km S of Banning, CAWed, Apr 28, 11:13 AM PDT · 1984 days ago · 13 km deep · 54 km away
35. 2.03km NNW of Fontana, CAThu, Apr 29, 6:48 PM PDT · 1983 days ago · 5 km deep · 97 km away · felt by 2
36. 2.61km N of Yucaipa, CAFri, Apr 30, 2:35 PM PDT · 1982 days ago · 11 km deep · 77 km away · felt by 44
37. 1.53km NNW of Fontana, CAFri, Apr 30, 2:37 PM PDT · 1982 days ago · 4 km deep · 97 km away
38. 1.66km SE of Loma Linda, CAFri, Apr 30, 4:13 PM PDT · 1982 days ago · 10 km deep · 76 km away
39. 1.910km SSW of San Diego Country Estates, CASun, May 2, 4:17 AM PDT · 1980 days ago · 14 km deep · 51 km away · felt by 6
40. 1.69km NE of Aguanga, CASun, May 2, 7:13 AM PDT · 1980 days ago · 3 km deep · 22 km away
41. 1.64km WSW of Salton City, CASun, May 2, 5:32 PM PDT · 1980 days ago · 4 km deep · 90 km away
42. 2.446km SSW of Dana Point, CAMon, May 3, 4:21 AM PDT · 1979 days ago · 4 km deep · 93 km away
43. 1.618km ESE of Anza, CAMon, May 3, 10:09 AM PDT · 1979 days ago · 13 km deep · 45 km away
44. 1.918km ESE of Anza, CAMon, May 3, 10:09 AM PDT · 1979 days ago · 13 km deep · 46 km away
45. 1.810km NNW of Alpine, CAMon, May 3, 1:41 PM PDT · 1979 days ago · 15 km deep · 51 km away · felt by 12
46. 2.010km S of Borrego Springs, CAMon, May 3, 8:06 PM PDT · 1979 days ago · 6 km deep · 58 km away
47. 1.611km NNW of Anza, CAMon, May 3, 9:23 PM PDT · 1979 days ago · 14 km deep · 38 km away
48. 1.82km S of Cabazon, CATue, May 4, 11:14 AM PDT · 1978 days ago · 16 km deep · 62 km away
49. 1.53km E of Fontana, CAWed, May 5, 6:25 AM PDT · 1977 days ago · 3 km deep · 93 km away
50. 1.78km E of Borrego Springs, CAWed, May 5, 12:50 PM PDT · 1977 days ago · 10 km deep · 64 km away
51. 1.820km E of Anza, CAWed, May 5, 1:55 PM PDT · 1977 days ago · 6 km deep · 51 km away
52. 2.85km WSW of Morongo Valley, CAWed, May 5, 3:14 PM PDT · 1977 days ago · 10 km deep · 81 km away · felt by 22
53. 1.810km NW of Anza, CAWed, May 5, 6:30 PM PDT · 1977 days ago · 16 km deep · 37 km away
54. 2.26km NW of Mira Loma, CAWed, May 5, 10:47 PM PDT · 1977 days ago · 7 km deep · 92 km away · felt by 46
55. 1.611km ENE of North Tustin, CAThu, May 6, 5:22 AM PDT · 1976 days ago · 8 km deep · 84 km away
56. 1.89km ENE of Anza, CAThu, May 6, 10:37 AM PDT · 1976 days ago · 13 km deep · 43 km away
57. 2.511km SSW of Idyllwild, CAThu, May 6, 10:59 PM PDT · 1976 days ago · 14 km deep · 37 km away · felt by 7
58. 2.310km SSW of Idyllwild, CAThu, May 6, 10:59 PM PDT · 1976 days ago · 14 km deep · 38 km away
59. 2.311km SSW of Idyllwild, CAFri, May 7, 3:40 PM PDT · 1975 days ago · 15 km deep · 37 km away
60. 1.86km NNE of Lake Henshaw, CASat, May 8, 7:49 AM PDT · 1974 days ago · 12 km deep · 22 km away

The first 60 of 162.

Before

1. 2.110km W of Palomar Observatory, CASun, Apr 18, 2:18 AM PDT · 1994 days ago · 8 km deep · 0 km away · felt by 5
2. 1.69km SE of Valle Vista, CASat, Apr 17, 5:58 PM PDT · 1995 days ago · 16 km deep · 41 km away
3. 1.78km ESE of Big Bear City, CASat, Apr 17, 3:34 AM PDT · 1995 days ago · 7 km deep · 98 km away
4. 1.614km ESE of Anza, CAFri, Apr 16, 1:44 PM PDT · 1996 days ago · 13 km deep · 45 km away
5. 2.01km NNE of Laguna Beach, CAFri, Apr 16, 8:01 AM PDT · 1996 days ago · 14 km deep · 79 km away
6. 1.522km ESE of Anza, CAThu, Apr 15, 4:29 AM PDT · 1997 days ago · 14 km deep · 50 km away
7. 1.910km N of Borrego Springs, CAWed, Apr 14, 10:40 PM PDT · 1998 days ago · 11 km deep · 56 km away
8. 2.615km NE of Indio, CATue, Apr 13, 3:05 PM PDT · 1999 days ago · 4 km deep · 95 km away · felt by 8
9. 3.515km NE of Indio, CATue, Apr 13, 2:35 PM PDT · 1999 days ago · 3 km deep · 95 km away · felt by 80
10. 1.68km NNE of Borrego Springs, CATue, Apr 13, 4:35 AM PDT · 1999 days ago · 11 km deep · 58 km away
11. 1.69km NE of Aguanga, CATue, Apr 13, 12:04 AM PDT · 2000 days ago · 6 km deep · 22 km away
12. 1.613km NNE of Thousand Palms, CASun, Apr 11, 6:30 PM PDT · 2001 days ago · 9 km deep · 87 km away
13. 3.04km NNW of Yucca Valley, CAFri, Apr 9, 8:57 PM PDT · 2003 days ago · 6 km deep · 100 km away · felt by 94
14. 1.821km ESE of Anza, CAFri, Apr 9, 10:52 AM PDT · 2003 days ago · 5 km deep · 50 km away
15. 1.514km E of Borrego Springs, CAFri, Apr 9, 6:20 AM PDT · 2003 days ago · 3 km deep · 69 km away
16. 3.12km N of Cabazon, CAThu, Apr 8, 5:33 PM PDT · 2004 days ago · 15 km deep · 66 km away · felt by 68
17. 1.67km NE of Banning, CAThu, Apr 8, 1:05 PM PDT · 2004 days ago · 9 km deep · 70 km away
18. 1.66km NNW of San Jacinto, CAThu, Apr 8, 4:30 AM PDT · 2004 days ago · 12 km deep · 52 km away
19. 2.86km NW of San Jacinto, CAThu, Apr 8, 4:19 AM PDT · 2004 days ago · 12 km deep · 52 km away · felt by 48
20. 1.821km NNW of Borrego Springs, CAWed, Apr 7, 11:07 PM PDT · 2005 days ago · 6 km deep · 49 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci39854680. Read Sat, Oct 3, 2026, 7:08 PM UTC.