M1.7 earthquake 3km WSW of Willowbrook, California

Magnitude

1.7 (ML, local (Richter)), micro

Magnitude from

Southern California Seismic Network

Local time

Fri, Apr 18, 2003, 8:21 PM PDT

UTC

2003-04-19 03:21:13 UTC

Depth

15.6 km (9.7 mi), shallow

Epicenter

33.910° N, 118.287° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.6 km horizontally, 2.1 km in depth

Magnitude uncertainty

±0.31

Depth from

From location

Station coverage gap

188°, poorly surrounded by stations

Stations used

7

• West Athens, CaliforniaPopulation 8,729. Forecast2 kmSE
• Willowbrook, CaliforniaPopulation 35,983. Forecast3 kmWSW
• Inglewood, CaliforniaPopulation 111,666. Forecast8 kmSE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast16 kmSSW

After

1. 1.51km ENE of Loma Linda, CAFri, Apr 18, 8:39 PM PDT · 8570 days ago · 12 km deep · 97 km away
2. 1.610km NE of Simi Valley, CASat, Apr 19, 4:41 PM PDT · 8570 days ago · 14 km deep · 60 km away
3. 2.03km S of Fountain Valley, CASat, Apr 19, 7:32 PM PDT · 8569 days ago · 6 km deep · 39 km away
4. 1.92km E of Granada Hills, CASun, Apr 20, 8:19 AM PDT · 8569 days ago · 14 km deep · 44 km away
5. 1.88km WNW of Palos Verdes Estates, CaliforniaMon, Apr 21, 1:15 AM PDT · 8568 days ago · 6 km deep · 20 km away
6. 1.621km SSW of Seal Beach, CaliforniaMon, Apr 21, 10:28 AM PDT · 8568 days ago · 6 km deep · 41 km away
7. 2.51km NW of El Segundo, CATue, Apr 22, 2:25 PM PDT · 8567 days ago · 7 km deep · 13 km away
8. 1.74km NE of Yorba Linda, CAThu, Apr 24, 9:28 PM PDT · 8564 days ago · 10 km deep · 47 km away
9. 1.92km SW of San Bernardino, CASat, Apr 26, 11:26 PM PDT · 8562 days ago · 14 km deep · 93 km away
10. 1.80km S of El Monte, CASun, Apr 27, 2:09 AM PDT · 8562 days ago · 7 km deep · 30 km away
11. 1.61km S of El Monte, CASun, Apr 27, 12:37 PM PDT · 8562 days ago · 7 km deep · 29 km away
12. 1.72km SW of Loma Linda, CAMon, Apr 28, 7:57 AM PDT · 8561 days ago · 17 km deep · 95 km away
13. 1.72km WNW of North Hollywood, CATue, Apr 29, 4:00 AM PDT · 8560 days ago · 9 km deep · 31 km away
14. 1.96km SSW of Devore, CAThu, May 1, 7:53 AM PDT · 8558 days ago · 10 km deep · 84 km away
15. 1.84km WNW of Van Nuys, CAThu, May 1, 1:35 PM PDT · 8558 days ago · 16 km deep · 37 km away
16. 1.54km NNE of Walnut, CAFri, May 2, 1:53 AM PDT · 8557 days ago · 11 km deep · 44 km away
17. 1.74km NE of Yorba Linda, CAFri, May 2, 3:07 AM PDT · 8557 days ago · 11 km deep · 47 km away
18. 2.45km NE of Yorba Linda, CAFri, May 2, 3:08 AM PDT · 8557 days ago · 12 km deep · 47 km away
19. 2.112km NE of Simi Valley, CASat, May 3, 6:14 AM PDT · 8556 days ago · 13 km deep · 61 km away
20. 1.62km S of Loma Linda, CaliforniaSun, May 4, 4:24 AM PDT · 8555 days ago · 17 km deep · 96 km away
21. 2.38km E of Ojai, CAMon, May 5, 11:36 PM PDT · 8553 days ago · 15 km deep · 99 km away
22. 1.52km ENE of Culver City, CATue, May 6, 8:15 PM PDT · 8552 days ago · 9 km deep · 15 km away
23. 1.57km SW of Lytle Creek, CaliforniaWed, May 7, 3:59 AM PDT · 8552 days ago · 6 km deep · 76 km away
24. 1.71km SSW of Loma Linda, CAWed, May 7, 5:18 AM PDT · 8552 days ago · 17 km deep · 95 km away
25. 1.87km NNW of Mira Loma, CAThu, May 8, 6:04 PM PDT · 8551 days ago · 8 km deep · 70 km away
26. 1.83km NE of Colton, CAFri, May 9, 3:48 AM PDT · 8550 days ago · 12 km deep · 94 km away
27. 1.93km W of Costa Mesa, CAFri, May 9, 10:19 AM PDT · 8550 days ago · 4 km deep · 42 km away
28. 1.71km ENE of Granada Hills, CAFri, May 9, 5:55 PM PDT · 8550 days ago · 14 km deep · 45 km away
29. 1.70km SSW of Malibu, CASun, May 11, 12:44 AM PDT · 8548 days ago · 6 km deep · 49 km away
30. 1.814km SW of Marina del Rey, CASun, May 11, 4:41 AM PDT · 8548 days ago · 14 km deep · 26 km away
31. 1.76km ENE of Oxnard, CASun, May 11, 5:21 AM PDT · 8548 days ago · 26 km deep · 83 km away
32. 2.311km SSE of San Pedro, CASun, May 11, 4:11 PM PDT · 8548 days ago · 3 km deep · 30 km away
33. 1.511km W of El Segundo, CaliforniaMon, May 12, 7:18 PM PDT · 8546 days ago · 9 km deep · 23 km away
34. 1.65km SE of Loma Linda, CATue, May 13, 2:20 AM PDT · 8546 days ago · 17 km deep · 99 km away
35. 1.62km E of Loma Linda, CATue, May 13, 3:55 AM PDT · 8546 days ago · 13 km deep · 98 km away
36. 2.04km S of Charter Oak, CATue, May 13, 5:37 AM PDT · 8546 days ago · 11 km deep · 44 km away
37. 1.70km NNW of Loma Linda, CATue, May 13, 10:42 AM PDT · 8546 days ago · 17 km deep · 96 km away
38. 1.54km NNE of Walnut, CATue, May 13, 6:20 PM PDT · 8546 days ago · 10 km deep · 43 km away
39. 2.010km WSW of Malibu, CASun, May 18, 2:38 AM PDT · 8541 days ago · 14 km deep · 58 km away
40. 1.80km NE of View Park-Windsor Hills, CASun, May 18, 7:41 AM PDT · 8541 days ago · 10 km deep · 11 km away
41. 1.64km S of Charter Oak, CASun, May 18, 11:59 AM PDT · 8541 days ago · 11 km deep · 44 km away
42. 1.921km SE of Port Hueneme, CaliforniaSun, May 18, 1:20 PM PDT · 8541 days ago · 4 km deep · 72 km away
43. 1.92km SSW of San Bernardino, CAMon, May 19, 12:58 PM PDT · 8540 days ago · 11 km deep · 93 km away
44. 1.54km S of Loma Linda, CaliforniaTue, May 20, 3:35 AM PDT · 8539 days ago · 16 km deep · 95 km away
45. 2.02km WNW of Lake Hughes, CAWed, May 21, 4:42 AM PDT · 8538 days ago · 11 km deep · 88 km away
46. 1.52km S of Loma Linda, CaliforniaWed, May 21, 6:51 PM PDT · 8537 days ago · 11 km deep · 96 km away
47. 2.51km N of San Gabriel, CAThu, May 22, 8:53 AM PDT · 8537 days ago · 8 km deep · 27 km away
48. 1.54km SSW of Valencia, CASat, May 24, 7:18 AM PDT · 8535 days ago · 7 km deep · 63 km away
49. 1.710km SSW of Corona, CASat, May 24, 1:54 PM PDT · 8535 days ago · 4 km deep · 63 km away
50. 1.96km SSW of Valencia, CATue, May 27, 2:33 AM PDT · 8532 days ago · 4 km deep · 62 km away
51. 1.61km NE of Muscoy, CATue, May 27, 8:23 AM PDT · 8532 days ago · 7 km deep · 92 km away
52. 1.65km E of Agoura Hills, CATue, May 27, 3:12 PM PDT · 8532 days ago · 8 km deep · 47 km away
53. 2.15km NE of Yorba Linda, CATue, May 27, 4:39 PM PDT · 8532 days ago · 9 km deep · 47 km away
54. 1.63km N of Moreno Valley, CaliforniaTue, May 27, 6:24 PM PDT · 8532 days ago · 14 km deep · 98 km away
55. 1.52km ENE of Grand Terrace, CaliforniaTue, May 27, 11:06 PM PDT · 8531 days ago · 18 km deep · 93 km away
56. 1.610km SW of Agua Dulce, CAWed, May 28, 1:18 PM PDT · 8531 days ago · 4 km deep · 59 km away
57. 1.910km N of Lake View Terrace, CAWed, May 28, 7:54 PM PDT · 8530 days ago · 2 km deep · 51 km away
58. 1.67km SE of Chino Hills, CAThu, May 29, 11:43 PM PDT · 8529 days ago · 13 km deep · 54 km away
59. 2.07km SSW of Pearblossum, CAFri, May 30, 7:08 PM PDT · 8528 days ago · 5 km deep · 67 km away
60. 1.52km N of Colton, CAFri, May 30, 11:16 PM PDT · 8528 days ago · 18 km deep · 92 km away

The first 60 of 91.

Before

1. 1.67km SSE of Piru, CAWed, Apr 16, 10:57 PM PDT · 8572 days ago · 18 km deep · 66 km away
2. 2.42km ENE of Compton, CATue, Apr 15, 10:14 PM PDT · 8573 days ago · 14 km deep · 8 km away
3. 1.59km SW of Corona, CATue, Apr 15, 6:58 PM PDT · 8573 days ago · 6 km deep · 61 km away
4. 1.82km SE of Paramount, CAMon, Apr 14, 2:59 PM PDT · 8575 days ago · 13 km deep · 13 km away
5. 1.82km WSW of Loma Linda, CAMon, Apr 14, 10:13 AM PDT · 8575 days ago · 16 km deep · 94 km away
6. 2.01km NNE of Compton, CAMon, Apr 14, 3:58 AM PDT · 8575 days ago · 5 km deep · 7 km away
7. 2.21km NNW of Compton, CAMon, Apr 14, 3:19 AM PDT · 8575 days ago · 14 km deep · 6 km away
8. 3.10km NE of Compton, CAMon, Apr 14, 3:08 AM PDT · 8575 days ago · 14 km deep · 7 km away · felt by 526
9. 1.912km NW of Fillmore, CASun, Apr 13, 7:24 PM PDT · 8575 days ago · 12 km deep · 92 km away
10. 1.63km SSW of Loma Linda, CASun, Apr 13, 2:20 AM PDT · 8576 days ago · 17 km deep · 95 km away
11. 1.86km SW of Valencia, CASat, Apr 12, 8:47 PM PDT · 8576 days ago · 7 km deep · 63 km away
12. 1.61km NNE of Colton, CAThu, Apr 10, 6:49 PM PDT · 8578 days ago · 17 km deep · 92 km away
13. 1.619km SSW of Port Hueneme, CaliforniaTue, Apr 8, 2:13 AM PDT · 8581 days ago · 7 km deep · 95 km away
14. 1.710km WSW of Corona, CAMon, Apr 7, 7:59 PM PDT · 8581 days ago · 8 km deep · 58 km away
15. 1.73km SSW of Culver City, CAMon, Apr 7, 12:34 AM PDT · 8582 days ago · 17 km deep · 15 km away
16. 1.61km ENE of Baldwin Hills, CAMon, Apr 7, 12:33 AM PDT · 8582 days ago · 14 km deep · 13 km away
17. 1.52km W of San Fernando, CASun, Apr 6, 4:21 PM PDT · 8583 days ago · 13 km deep · 44 km away
18. 1.86km S of Encino, CASun, Apr 6, 1:52 AM PST · 8583 days ago · 8 km deep · 29 km away
19. 2.06km NNE of Claremont, CASat, Apr 5, 8:43 PM PST · 8583 days ago · 8 km deep · 60 km away
20. 1.76km S of Encino, CAFri, Apr 4, 9:14 PM PST · 8584 days ago · 9 km deep · 29 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci9908909. Read Mon, Oct 5, 2026, 1:18 PM UTC.