M1.7 earthquake 9km N of Foothill Ranch, CA

Magnitude

1.7 (Mh), micro

Magnitude from

Southern California Seismic Network

Local time

Thu, Oct 4, 1934, 3:47 PM GMT-8

UTC

1934-10-04 23:47:42 UTC

Depth

6.0 km (3.7 mi), shallow

Epicenter

33.767° N, 117.643° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 2.7 km horizontally, 31.6 km in depth

Magnitude uncertainty

±0.18

Depth from

Operator assigned

Station coverage gap

268°, poorly surrounded by stations

Stations used

3

• Foothill Ranch, CaliforniaPopulation 11,698. Forecast9 kmN
• Corona, CaliforniaPopulation 164,226. Forecast14 kmSSW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast64 kmESE

After

1. 2.07km NNE of Fontana, CAFri, Oct 5, 11:00 AM GMT-8 · 33599 days ago · 6 km deep · 47 km away
2. 2.23km WNW of Fountain Valley, CAFri, Oct 5, 8:03 PM GMT-8 · 33598 days ago · 6 km deep · 32 km away
3. 1.97km NW of Adelanto, CASat, Oct 6, 6:11 PM GMT-8 · 33597 days ago · 6 km deep · 97 km away
4. 1.90km N of Rossmoor, CASun, Oct 7, 7:33 AM GMT-8 · 33597 days ago · 6 km deep · 41 km away
5. 1.73km N of Muscoy, CAMon, Oct 8, 12:08 PM GMT-8 · 33596 days ago · 6 km deep · 54 km away
6. 1.92km NW of La Mirada, CAWed, Oct 10, 3:04 PM GMT-8 · 33594 days ago · 6 km deep · 40 km away
7. 1.73km NNE of Fountain Valley, CAFri, Oct 12, 1:02 AM GMT-8 · 33592 days ago · 6 km deep · 28 km away
8. 1.54km NW of Newport Beach, CASat, Oct 13, 12:22 AM GMT-8 · 33591 days ago · 6 km deep · 32 km away
9. 1.94km SW of Calimesa, CASat, Oct 13, 1:22 AM GMT-8 · 33591 days ago · 21 km deep · 56 km away
10. 3.63km ENE of Lomita, CAWed, Oct 17, 1:39 AM GMT-8 · 33587 days ago · 6 km deep · 59 km away
11. 2.011km SSW of Rancho Palos Verdes, CAWed, Oct 17, 11:06 PM GMT-8 · 33586 days ago · 6 km deep · 75 km away
12. 3.06km ESE of San Pedro, CAThu, Oct 18, 2:07 AM GMT-8 · 33586 days ago · 6 km deep · 55 km away
13. 2.235km SW of Dana Point, CAMon, Oct 22, 7:23 AM GMT-8 · 33582 days ago · 6 km deep · 65 km away
14. 3.02km SE of Lomita, CATue, Oct 23, 10:17 AM GMT-8 · 33581 days ago · 6 km deep · 61 km away
15. 2.33km NNW of Beverly Hills, CAThu, Oct 25, 6:45 PM GMT-8 · 33578 days ago · 1 km deep · 80 km away
16. 2.44km NNW of Westwood, CAThu, Oct 25, 8:14 PM GMT-8 · 33578 days ago · 6 km deep · 82 km away
17. 1.72km NW of Laguna Beach, CAFri, Oct 26, 11:46 PM GMT-8 · 33577 days ago · 6 km deep · 27 km away
18. 2.74km WNW of Seal Beach, CASat, Oct 27, 1:46 PM GMT-8 · 33577 days ago · 6 km deep · 46 km away
19. 1.72km SSW of Cerritos, CASat, Oct 27, 1:52 PM GMT-8 · 33577 days ago · 6 km deep · 40 km away
20. 3.413km NNW of Warner Springs, CASat, Oct 27, 9:47 PM GMT-8 · 33576 days ago · 6 km deep · 98 km away
21. 2.41km SW of Los Angeles, CAMon, Oct 29, 7:07 AM GMT-8 · 33575 days ago · 6 km deep · 65 km away
22. 3.28km N of Aguanga, CAMon, Oct 29, 8:51 PM GMT-8 · 33574 days ago · 6 km deep · 76 km away
23. 2.16km WSW of Dana Point, CAThu, Nov 1, 6:04 AM GMT-8 · 33572 days ago · 6 km deep · 37 km away
24. 1.61km SE of Placentia, CAThu, Nov 1, 7:07 AM GMT-8 · 33572 days ago · 6 km deep · 23 km away
25. 3.61km ENE of Rolling Hills, CASun, Nov 4, 6:38 PM GMT-8 · 33568 days ago · 6 km deep · 64 km away
26. 2.49km ESE of San Pedro, CAMon, Nov 5, 7:56 PM GMT-8 · 33567 days ago · 6 km deep · 53 km away
27. 1.72km WNW of San Bernardino, CATue, Nov 6, 7:26 AM GMT-8 · 33567 days ago · 6 km deep · 51 km away
28. 2.332km NW of Avalon, CAThu, Nov 8, 1:44 PM GMT-8 · 33565 days ago · 6 km deep · 93 km away
29. 1.79km WNW of Adelanto, CASun, Nov 11, 12:34 PM GMT-8 · 33562 days ago · 6 km deep · 97 km away
30. 3.13km S of Menifee, CATue, Nov 13, 12:41 PM GMT-8 · 33560 days ago · 6 km deep · 47 km away
31. 2.50km WSW of March Air Reserve Base, CATue, Nov 13, 10:37 PM GMT-8 · 33559 days ago · 17 km deep · 37 km away
32. 3.48km W of Camp Pendleton South, CAWed, Nov 14, 1:30 PM GMT-8 · 33559 days ago · 6 km deep · 61 km away
33. 2.417km ESE of Avalon, CAThu, Nov 15, 6:02 PM GMT-8 · 33557 days ago · 6 km deep · 75 km away
34. 1.812km S of San Pedro, CAFri, Nov 16, 7:31 AM GMT-8 · 33557 days ago · 6 km deep · 61 km away
35. 4.13km NW of Fountain Valley, CAFri, Nov 16, 1:26 PM GMT-8 · 33557 days ago · 6 km deep · 31 km away
36. 1.821km SSW of Newport Beach, CAFri, Nov 16, 1:54 PM GMT-8 · 33557 days ago · 6 km deep · 48 km away
37. 1.912km SW of Laguna Beach, CAFri, Nov 16, 2:04 PM GMT-8 · 33557 days ago · 6 km deep · 40 km away
38. 1.912km SW of Laguna Beach, CAFri, Nov 16, 3:30 PM GMT-8 · 33556 days ago · 6 km deep · 40 km away
39. 2.415km WNW of Adelanto, CAFri, Nov 16, 3:50 PM GMT-8 · 33556 days ago · 6 km deep · 99 km away
40. 2.35km SW of Huntington Beach, CAFri, Nov 16, 3:58 PM GMT-8 · 33556 days ago · 6 km deep · 38 km away
41. 2.08km SSW of San Joaquin Hills, CAFri, Nov 16, 4:36 PM GMT-8 · 33556 days ago · 6 km deep · 33 km away
42. 1.718km SW of Laguna Beach, CASat, Nov 17, 5:27 AM GMT-8 · 33556 days ago · 6 km deep · 45 km away
43. 1.713km WSW of Laguna Beach, CASun, Nov 18, 6:47 AM GMT-8 · 33555 days ago · 6 km deep · 39 km away
44. 2.23km WSW of Rossmoor, CAMon, Nov 19, 8:50 AM GMT-8 · 33554 days ago · 6 km deep · 44 km away
45. 2.721km SSE of Avalon, CATue, Nov 20, 4:49 PM GMT-8 · 33552 days ago · 6 km deep · 84 km away
46. 3.418km SW of Laguna Beach, CAWed, Nov 21, 2:49 PM GMT-8 · 33552 days ago · 6 km deep · 46 km away
47. 2.19km S of San Pedro, CAWed, Nov 21, 10:46 PM GMT-8 · 33551 days ago · 6 km deep · 62 km away
48. 1.76km WSW of Dana Point, CAThu, Nov 22, 9:11 AM GMT-8 · 33551 days ago · 6 km deep · 38 km away
49. 2.34km ENE of Green Acres, CAFri, Nov 23, 1:55 AM GMT-8 · 33550 days ago · 6 km deep · 56 km away
50. 2.216km SSW of Seal Beach, CAFri, Nov 23, 2:12 AM GMT-8 · 33550 days ago · 6 km deep · 53 km away
51. 2.93km ENE of Loma Linda, CASun, Nov 25, 4:23 PM GMT-8 · 33547 days ago · 15 km deep · 50 km away
52. 1.92km W of Crestline, CASun, Nov 25, 5:58 PM GMT-8 · 33547 days ago · 6 km deep · 61 km away
53. 1.814km NE of Avalon, CAMon, Nov 26, 9:48 PM GMT-8 · 33546 days ago · 6 km deep · 65 km away
54. 2.15km SW of Lakeland Village, CAThu, Nov 29, 3:27 PM GMT-8 · 33543 days ago · 6 km deep · 30 km away
55. 2.213km W of Avalon, CAFri, Nov 30, 6:04 AM GMT-8 · 33543 days ago · 6 km deep · 90 km away
56. 1.923km SW of Newport Beach, CASat, Dec 1, 3:01 PM GMT-8 · 33542 days ago · 6 km deep · 53 km away
57. 1.87km ESE of San Pedro, CASun, Dec 2, 12:20 PM GMT-8 · 33541 days ago · 6 km deep · 54 km away
58. 2.626km SSW of Dana Point, CAMon, Dec 3, 8:55 AM GMT-8 · 33540 days ago · 6 km deep · 59 km away

Before

1. 2.56km NNE of Foothill Ranch, CAWed, Oct 3, 7:40 PM GMT-8 · 33600 days ago · 6 km deep · 4 km away
2. 2.73km W of Bloomington, CATue, Oct 2, 6:25 AM GMT-8 · 33602 days ago · 19 km deep · 39 km away
3. 1.730km SW of Dana Point, CAMon, Oct 1, 9:24 PM GMT-8 · 33602 days ago · 6 km deep · 61 km away
4. 2.41km NW of Villa Park, CAMon, Oct 1, 3:50 PM GMT-8 · 33602 days ago · 6 km deep · 17 km away
5. 2.43km NE of Villa Park, CAMon, Oct 1, 12:15 PM GMT-8 · 33603 days ago · 6 km deep · 16 km away
6. 1.88km SW of Huntington Beach, CASun, Sep 30, 9:20 PM GMT-8 · 33603 days ago · 6 km deep · 42 km away
7. 1.93km WNW of San Joaquin Hills, CASun, Sep 30, 3:39 AM GMT-8 · 33604 days ago · 6 km deep · 27 km away
8. 2.06km SSW of Winchester, CASat, Sep 29, 2:58 PM GMT-8 · 33605 days ago · 6 km deep · 50 km away
9. 2.131km ESE of Avalon, CASat, Sep 29, 10:38 AM GMT-8 · 33605 days ago · 6 km deep · 64 km away
10. 2.28km SSE of Avalon, CAFri, Sep 28, 8:00 AM GMT-8 · 33606 days ago · 6 km deep · 81 km away
11. 1.910km SW of Laguna Beach, CAMon, Sep 24, 5:46 AM GMT-8 · 33610 days ago · 6 km deep · 37 km away
12. 1.71km ENE of Huntington Beach, CAThu, Sep 20, 11:06 PM GMT-8 · 33613 days ago · 6 km deep · 33 km away
13. 2.336km SW of Dana Point, CAThu, Sep 20, 5:33 PM GMT-8 · 33613 days ago · 6 km deep · 68 km away
14. 2.28km SW of Corona, CAThu, Sep 20, 5:05 PM GMT-8 · 33613 days ago · 6 km deep · 6 km away
15. 1.73km SSW of Fountain Valley, CASun, Sep 16, 6:18 PM GMT-8 · 33617 days ago · 6 km deep · 31 km away
16. 3.24km WNW of Newport Beach, CAThu, Sep 13, 2:36 AM GMT-8 · 33621 days ago · 6 km deep · 33 km away
17. 1.93km SSW of Signal Hill, CAThu, Sep 13, 12:08 AM GMT-8 · 33621 days ago · 6 km deep · 50 km away
18. 2.510km SW of Laguna Beach, CAWed, Sep 12, 10:49 AM GMT-8 · 33622 days ago · 6 km deep · 37 km away
19. 2.09km SSW of Laguna Beach, CAMon, Sep 10, 3:26 PM GMT-8 · 33623 days ago · 6 km deep · 37 km away
20. 2.39km ENE of Valle Vista, CASat, Sep 8, 7:56 PM GMT-8 · 33625 days ago · 6 km deep · 77 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci3362456. Read Thu, Oct 1, 2026, 10:43 AM UTC.