M3.3 earthquake 22km ESE of Anza, CA

Magnitude

3.3 (ml), minor

Local time

Sat, Jan 13, 1973, 10:46 AM PST

UTC

1973-01-13 18:46:21 UTC

Depth

5.3 km (3.3 mi), shallow

Epicenter

33.479° N, 116.460° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.7 km horizontally, 1.9 km in depth

Magnitude uncertainty

±0.07

Depth from

From location

Station coverage gap

89°

Stations used

9

• Anza, CaliforniaPopulation 3,014. Forecast22 kmESE
• La Quinta, CaliforniaPopulation 40,476. Forecast25 kmSW
• Temecula, CaliforniaPopulation 110,003. Forecast64 kmE
• San Diego, CaliforniaPopulation 1,404,452. Forecast107 kmNE

After

1. 2.622km ESE of Anza, CASat, Jan 13, 11:36 AM PST · 19610 days ago · 5 km deep · 1 km away
2. 2.822km ESE of Anza, CASat, Jan 13, 1:37 PM PST · 19610 days ago · 9 km deep · 0 km away
3. 2.722km ESE of Anza, CASat, Jan 13, 1:38 PM PST · 19610 days ago · 6 km deep · 2 km away
4. 1.714km ENE of Yucaipa, CASat, Jan 13, 10:53 PM PST · 19609 days ago · 6 km deep · 77 km away
5. 3.012km E of Borrego Springs, CAMon, Jan 22, 2:24 AM PST · 19601 days ago · 6 km deep · 33 km away
6. 2.97km N of Borrego Springs, CAMon, Jan 22, 10:30 PM PST · 19600 days ago · 6 km deep · 20 km away
7. 2.29km W of Pine Valley, CATue, Jan 23, 4:41 PM PST · 19600 days ago · 3 km deep · 76 km away
8. 2.26km WSW of Pine Valley, CATue, Jan 23, 5:41 PM PST · 19599 days ago · 5 km deep · 76 km away
9. 2.913km SE of Pine Valley, CAThu, Jan 25, 4:34 PM PST · 19598 days ago · 0 km deep · 83 km away
10. 2.412km NE of Campo, CAFri, Jan 26, 4:38 PM PST · 19597 days ago · 9 km deep · 89 km away
11. 1.74km SSW of Redlands, CASat, Jan 27, 1:00 AM PST · 19596 days ago · 2 km deep · 91 km away
12. 1.79km SSW of Murrieta, CASat, Jan 27, 6:31 AM PST · 19596 days ago · 6 km deep · 73 km away
13. 2.425km WSW of Westmorland, CASat, Jan 27, 6:20 PM PST · 19595 days ago · 6 km deep · 80 km away
14. 2.735km NNE of North Shore, CAMon, Jan 29, 6:51 PM PST · 19593 days ago · 0 km deep · 70 km away
15. 2.724km ENE of Coachella, CATue, Jan 30, 2:44 AM PST · 19593 days ago · 0 km deep · 59 km away
16. 2.513km SE of Pine Valley, CAFri, Feb 2, 4:37 PM PST · 19590 days ago · 4 km deep · 83 km away
17. 3.014km NNE of Cabazon, CASat, Feb 3, 3:45 PM PST · 19589 days ago · 6 km deep · 68 km away
18. 3.318km NNW of Twentynine Palms, CAThu, Feb 8, 11:41 PM PST · 19583 days ago · 16 km deep · 96 km away
19. 2.64km SW of Idyllwild, CAFri, Feb 9, 4:50 AM PST · 19583 days ago · 6 km deep · 38 km away
20. 2.85km SSE of Big Bear Lake, CAFri, Feb 9, 2:19 PM PST · 19583 days ago · 6 km deep · 90 km away
21. 1.74km SE of Big Bear City, CASat, Feb 10, 1:07 PM PST · 19582 days ago · 6 km deep · 90 km away
22. 2.39km WNW of Palomar Observatory, CASat, Feb 17, 10:20 PM PST · 19574 days ago · 3 km deep · 48 km away
23. 2.510km WNW of Palomar Observatory, CASat, Feb 17, 10:21 PM PST · 19574 days ago · 4 km deep · 48 km away
24. 2.610km WNW of Palomar Observatory, CASun, Feb 18, 12:32 AM PST · 19574 days ago · 4 km deep · 48 km away
25. 3.77km ENE of Ocotillo, CATue, Feb 20, 2:49 AM PST · 19572 days ago · 6 km deep · 94 km away
26. 3.02km WNW of Lake Henshaw, CASat, Feb 24, 9:41 PM PST · 19567 days ago · 8 km deep · 40 km away
27. 2.64km WNW of Lake Henshaw, CAMon, Feb 26, 4:03 AM PST · 19566 days ago · 11 km deep · 41 km away
28. 2.817km N of Cabazon, CAThu, Mar 1, 6:51 PM PST · 19562 days ago · 6 km deep · 73 km away
29. 2.76km WSW of Idyllwild, CAFri, Mar 2, 4:36 AM PST · 19562 days ago · 6 km deep · 39 km away
30. 1.711km ESE of Moreno Valley, CAWed, Mar 7, 4:13 AM PST · 19557 days ago · 12 km deep · 77 km away
31. 3.216km SW of Ocotillo Wells, CAWed, Mar 7, 2:59 PM PST · 19557 days ago · 6 km deep · 54 km away
32. 2.826km WSW of Westmorland, CAWed, Mar 7, 10:26 PM PST · 19556 days ago · 6 km deep · 79 km away
33. 2.43km S of Loma Linda, CASun, Mar 11, 1:10 AM PST · 19553 days ago · 16 km deep · 96 km away

Before

1. 1.72km E of Wildomar, CAMon, Jan 8, 3:50 PM PST · 19615 days ago · 6 km deep · 76 km away
2. 2.311km NE of Campo, CAFri, Jan 5, 4:57 PM PST · 19617 days ago · 10 km deep · 88 km away
3. 1.77km SSW of Redlands, CAWed, Jan 3, 7:37 PM PST · 19619 days ago · 7 km deep · 91 km away
4. 3.01km SSW of Lakeland Village, CAMon, Jan 1, 6:45 PM PST · 19621 days ago · 6 km deep · 84 km away
5. 2.412km NE of Campo, CAFri, Dec 29, 4:37 PM PST · 19625 days ago · 7 km deep · 88 km away
6. 3.215km ESE of Anza, CAThu, Dec 28, 12:07 PM PST · 19626 days ago · 6 km deep · 7 km away
7. 3.015km ESE of Anza, CAThu, Dec 28, 11:49 AM PST · 19626 days ago · 5 km deep · 6 km away
8. 3.618km WNW of Morongo Valley, CAFri, Dec 22, 3:28 AM PST · 19632 days ago · 6 km deep · 74 km away
9. 3.520km S of Twentynine Palms, CATue, Dec 19, 2:32 PM PST · 19635 days ago · 0 km deep · 63 km away
10. 2.118km S of Twentynine Palms, CATue, Dec 19, 2:31 PM PST · 19635 days ago · 0 km deep · 67 km away
11. 3.014km N of Ocotillo, CAMon, Dec 18, 2:08 PM PST · 19636 days ago · 6 km deep · 81 km away
12. 3.212km NNE of Ocotillo Wells, CASun, Dec 17, 9:52 PM PST · 19636 days ago · 6 km deep · 44 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci3320428 (also filed as usp000004n). Read Tue, Sep 22, 2026, 12:17 PM UTC.