M2.5 earthquake 11km SSW of Morongo Valley, CA

Magnitude

2.5 (ML, local (Richter)), micro

Magnitude from

Southern California Seismic Network

Local time

Sat, Aug 11, 1973, 12:03 PM PDT

UTC

1973-08-11 19:03:11 UTC

Depth

6.0 km (3.7 mi), shallow

Epicenter

33.965° N, 116.641° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.9 km horizontally, 31.6 km in depth

Magnitude uncertainty

±0.03

Depth from

Operator assigned

Station coverage gap

133°

Stations used

14

• Morongo Valley, CaliforniaPopulation 3,552. Forecast11 kmSSW
• Desert Hot Springs, CaliforniaPopulation 28,335. Forecast13 kmW
• Moreno Valley, CaliforniaPopulation 204,198. Forecast54 kmE
• San Diego, CaliforniaPopulation 1,404,452. Forecast147 kmNNE

After

1. 3.18km NE of Borrego Springs, CAWed, Aug 15, 5:20 AM PDT · 19407 days ago · 7 km deep · 80 km away
2. 2.78km NE of Desert Hot Springs, CAThu, Aug 16, 8:33 AM PDT · 19406 days ago · 6 km deep · 18 km away
3. 2.44km SW of Yucca Valley, CAThu, Aug 16, 8:37 AM PDT · 19406 days ago · 0 km deep · 21 km away
4. 2.928km N of Yucca Valley, CAWed, Aug 22, 6:29 AM PDT · 19400 days ago · 6 km deep · 47 km away
5. 2.812km E of Borrego Springs, CAWed, Aug 22, 2:03 PM PDT · 19400 days ago · 6 km deep · 87 km away
6. 1.74km NNE of Fontana, CAThu, Aug 23, 6:41 PM PDT · 19398 days ago · 7 km deep · 76 km away
7. 3.011km SSW of Borrego Springs, CASat, Aug 25, 11:14 AM PDT · 19397 days ago · 6 km deep · 92 km away
8. 1.72km NE of Running Springs, CASat, Aug 25, 10:53 PM PDT · 19396 days ago · 6 km deep · 51 km away
9. 1.75km NW of Rialto, CASat, Aug 25, 10:57 PM PDT · 19396 days ago · 6 km deep · 74 km away
10. 2.711km NNE of Thousand Palms, CASun, Aug 26, 6:04 AM PDT · 19396 days ago · 1 km deep · 30 km away
11. 2.830km ENE of Big Bear City, CASun, Aug 26, 3:09 PM PDT · 19395 days ago · 6 km deep · 45 km away
12. 2.310km NE of Aguanga, CATue, Aug 28, 1:18 AM PDT · 19394 days ago · 5 km deep · 53 km away
13. 2.34km NNW of Chino, CAThu, Aug 30, 5:05 AM PDT · 19392 days ago · 0 km deep · 99 km away
14. 1.73km NE of Claremont, CAThu, Aug 30, 5:05 AM PDT · 19392 days ago · 6 km deep · 99 km away
15. 1.76km NW of Rialto, CAThu, Aug 30, 12:00 PM PDT · 19392 days ago · 6 km deep · 74 km away
16. 2.320km ESE of Anza, CASun, Sep 2, 5:13 AM PDT · 19389 days ago · 7 km deep · 56 km away
17. 2.610km NNE of Banning, CASun, Sep 2, 11:10 PM PDT · 19388 days ago · 6 km deep · 19 km away
18. 1.72km NNE of Colton, CAThu, Sep 6, 9:34 AM PDT · 19385 days ago · 6 km deep · 63 km away
19. 2.812km ESE of Lucerne Valley, CAFri, Sep 7, 1:09 AM PDT · 19384 days ago · 6 km deep · 51 km away
20. 1.76km SE of Loma Linda, CASat, Sep 8, 8:47 AM PDT · 19383 days ago · 8 km deep · 53 km away
21. 1.70km SSW of Loma Linda, CATue, Sep 11, 7:00 PM PDT · 19379 days ago · 8 km deep · 58 km away
22. 2.29km ENE of Aguanga, CAThu, Sep 13, 12:00 AM PDT · 19378 days ago · 14 km deep · 55 km away
23. 2.49km NE of Cabazon, CAFri, Sep 14, 9:19 AM PDT · 19377 days ago · 6 km deep · 6 km away
24. 2.52km WSW of Loma Linda, CAFri, Sep 14, 7:15 PM PDT · 19376 days ago · 13 km deep · 60 km away
25. 2.121km NE of Warner Springs, CASat, Sep 15, 8:05 AM PDT · 19376 days ago · 7 km deep · 61 km away
26. 3.412km SSW of Borrego Springs, CATue, Sep 18, 5:01 PM PDT · 19372 days ago · 14 km deep · 93 km away
27. 1.72km WNW of Loma Linda, CATue, Sep 18, 10:15 PM PDT · 19372 days ago · 7 km deep · 60 km away
28. 2.37km SSW of Idyllwild, CAWed, Sep 19, 4:41 AM PDT · 19372 days ago · 11 km deep · 33 km away
29. 3.023km N of Borrego Springs, CAThu, Sep 20, 1:40 PM PDT · 19371 days ago · 6 km deep · 60 km away
30. 1.712km NE of Trabuco Canyon, CAFri, Sep 21, 8:00 PM PDT · 19369 days ago · 6 km deep · 82 km away
31. 3.015 km SSE of Alpine Village, CaliforniaSat, Sep 22, 1:40 PM PDT · 19369 days ago · 8 km deep · 59 km away
32. 2.511km SE of Anza, CASat, Sep 22, 5:16 PM PDT · 19368 days ago · 6 km deep · 55 km away
33. 1.75km N of Moreno Valley, CASun, Sep 23, 6:29 PM PDT · 19367 days ago · 4 km deep · 54 km away
34. 2.96km SW of Idyllwild, CAWed, Sep 26, 12:06 AM PDT · 19365 days ago · 6 km deep · 31 km away
35. 2.67km SW of Idyllwild, CAThu, Sep 27, 4:48 AM PDT · 19364 days ago · 7 km deep · 32 km away
36. 2.21km SSW of Riverside, CAFri, Sep 28, 7:21 AM PDT · 19363 days ago · 2 km deep · 70 km away
37. 2.59km NNW of Borrego Springs, CASat, Sep 29, 5:46 AM PDT · 19362 days ago · 6 km deep · 73 km away
38. 3.26km E of Big Bear City, CAFri, Oct 5, 9:47 AM PDT · 19356 days ago · 6 km deep · 35 km away
39. 3.07km E of Borrego Springs, CASat, Oct 6, 11:38 PM PDT · 19354 days ago · 6 km deep · 85 km away
40. 3.110km E of Borrego Springs, CASun, Oct 7, 12:43 AM PDT · 19354 days ago · 10 km deep · 87 km away
41. 2.14km NW of Beaumont, CATue, Oct 9, 6:24 AM PDT · 19352 days ago · 9 km deep · 34 km away
42. 2.610km NNE of Trabuco Canyon, CATue, Oct 9, 3:39 PM PDT · 19351 days ago · 5 km deep · 86 km away

Before

1. 2.719km ESE of Anza, CAFri, Aug 10, 3:07 PM PDT · 19412 days ago · 15 km deep · 54 km away
2. 2.511km WSW of Amboy, CAFri, Aug 10, 9:29 AM PDT · 19412 days ago · 8 km deep · 94 km away
3. 1.711km SSE of Corona, CAFri, Aug 10, 5:38 AM PDT · 19412 days ago · 6 km deep · 85 km away
4. 2.612km N of Cabazon, CATue, Aug 7, 7:21 PM PDT · 19414 days ago · 9 km deep · 15 km away
5. 1.75km NW of Rialto, CAMon, Aug 6, 11:28 PM PDT · 19415 days ago · 6 km deep · 74 km away
6. 3.112km NE of Trabuco Canyon, CASun, Aug 5, 6:25 AM PDT · 19417 days ago · 6 km deep · 84 km away
7. 2.45km S of Devore, CAWed, Aug 1, 6:10 PM PDT · 19420 days ago · 8 km deep · 74 km away
8. 2.45km S of Devore, CAWed, Aug 1, 6:07 PM PDT · 19420 days ago · 6 km deep · 73 km away
9. 3.14km SSE of Devore, CAWed, Aug 1, 6:03 PM PDT · 19420 days ago · 5 km deep · 73 km away
10. 1.78km NNE of Rancho Cucamonga, CATue, Jul 31, 1:51 PM PDT · 19422 days ago · 8 km deep · 86 km away
11. 2.419km ESE of Anza, CASat, Jul 28, 2:47 PM PDT · 19425 days ago · 6 km deep · 53 km away
12. 2.811km NNE of Ocotillo Wells, CASat, Jul 28, 12:15 AM PDT · 19425 days ago · 6 km deep · 95 km away
13. 1.72km SSW of Loma Linda, CAMon, Jul 23, 8:37 PM PDT · 19429 days ago · 8 km deep · 58 km away
14. 2.54km WNW of Rancho Mirage, CAMon, Jul 23, 8:31 PM PDT · 19429 days ago · 6 km deep · 30 km away
15. 1.74km N of Rubidoux, CAMon, Jul 23, 5:30 PM PDT · 19429 days ago · 6 km deep · 71 km away
16. 1.74km E of Rancho Cucamonga, CASat, Jul 21, 10:23 PM PDT · 19431 days ago · 6 km deep · 85 km away
17. 2.69km NNE of Cabazon, CAWed, Jul 18, 12:37 PM PDT · 19435 days ago · 5 km deep · 12 km away
18. 3.416km ESE of Lucerne Valley, CATue, Jul 17, 7:15 AM PDT · 19436 days ago · 6 km deep · 51 km away
19. 1.74km N of San Bernardino, CASun, Jul 15, 11:43 PM PDT · 19437 days ago · 6 km deep · 64 km away
20. 3.29km ENE of Desert Hot Springs, CASun, Jul 15, 8:43 PM PDT · 19437 days ago · 2 km deep · 22 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci3319413. Read Sat, Oct 3, 2026, 9:38 AM UTC.