M3.5 earthquake 40km SSW of Progreso, B.C., MX

Magnitude

3.5 (ML, local (Richter)), minor

Magnitude from

Southern California Seismic Network

Local time

Fri, Sep 14, 1973, 4:57 PM PDT

UTC

1973-09-14 23:57:10 UTC

Depth

6.0 km (3.7 mi), shallow

Epicenter

32.265° N, 115.779° W

Region

Mexico

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 4.8 km horizontally, 31.6 km in depth

Magnitude uncertainty

±0.11

Depth from

Operator assigned

Station coverage gap

254°, poorly surrounded by stations

Stations used

5

• Santa Isabel, MexicoPopulation 29,311. Forecast45 kmSSW
• Mexicali, MexicoPopulation 1,032,686. Forecast51 kmSW

After

1. 3.012km ESE of Puebla, B.C., MXSat, Sep 15, 8:00 PM PDT · 19373 days ago · 6 km deep · 57 km away
2. 3.316km SW of Westmorland, CASat, Sep 15, 11:58 PM PDT · 19373 days ago · 6 km deep · 73 km away
3. 2.28km SW of Westmorland, CASun, Sep 16, 12:14 AM PDT · 19373 days ago · 5 km deep · 81 km away
4. 2.55km SSW of Pine Valley, CAWed, Sep 19, 6:10 PM PDT · 19369 days ago · 12 km deep · 92 km away
5. 1.77km WSW of Ocotillo, CASat, Sep 22, 9:46 AM PDT · 19367 days ago · 10 km deep · 58 km away
6. 3.066km E of Maneadero, B.C., MXWed, Sep 26, 12:16 AM PDT · 19363 days ago · 6 km deep · 63 km away
7. 2.810km E of Puebla, B.C., MXThu, Sep 27, 5:54 AM PDT · 19362 days ago · 10 km deep · 61 km away
8. 1.56km E of Westmorland, CASat, Sep 29, 7:20 AM PDT · 19360 days ago · 5 km deep · 87 km away
9. 2.612km N of Campo, CATue, Oct 2, 5:52 PM PDT · 19356 days ago · 6 km deep · 82 km away
10. 1.98km NE of Imperial, CATue, Oct 2, 8:41 PM PDT · 19356 days ago · 4 km deep · 74 km away
11. 1.93km NNW of El Centro, CASun, Oct 7, 1:10 AM PDT · 19352 days ago · 5 km deep · 64 km away
12. 1.71km N of El Centro, CASun, Oct 7, 2:37 AM PDT · 19352 days ago · 5 km deep · 63 km away
13. 2.821km SW of Tecate, B.C., MXSun, Oct 7, 8:37 AM PDT · 19352 days ago · 15 km deep · 97 km away
14. 2.75km SSE of Pine Valley, CAThu, Oct 11, 5:35 PM PDT · 19347 days ago · 4 km deep · 89 km away
15. 2.29km SSW of Holtville, CAFri, Oct 12, 6:15 AM PDT · 19347 days ago · 6 km deep · 63 km away
16. 2.516km N of Delta, B.C., MXFri, Oct 12, 9:52 PM PDT · 19346 days ago · 4 km deep · 61 km away
17. 1.73km S of Brawley, CASat, Oct 13, 12:20 AM PDT · 19346 days ago · 5 km deep · 80 km away
18. 2.832km E of Ensenada, B.C., MXSun, Oct 14, 2:33 AM PDT · 19345 days ago · 6 km deep · 63 km away
19. 4.368km E of Maneadero, B.C., MXTue, Oct 16, 7:53 AM PDT · 19343 days ago · 6 km deep · 54 km away
20. 3.271km E of Maneadero, B.C., MXTue, Oct 16, 8:00 AM PDT · 19343 days ago · 6 km deep · 61 km away
21. 3.060km E of Maneadero, B.C., MXTue, Oct 16, 8:56 AM PDT · 19343 days ago · 6 km deep · 58 km away
22. 3.071km ENE of Maneadero, B.C., MXTue, Oct 16, 11:25 AM PDT · 19343 days ago · 6 km deep · 38 km away
23. 3.010km WSW of Puebla, B.C., MXWed, Oct 17, 4:16 AM PDT · 19342 days ago · 5 km deep · 42 km away
24. 3.210km N of Tecate, B.C., MXThu, Oct 18, 6:41 PM PDT · 19340 days ago · 15 km deep · 92 km away
25. 2.710km NNE of Tecate, B.C., MXFri, Oct 19, 12:00 PM PDT · 19339 days ago · 18 km deep · 86 km away
26. 3.319km ESE of Ocotillo Wells, CASun, Oct 21, 4:20 PM PDT · 19337 days ago · 6 km deep · 90 km away
27. 1.616km WSW of Westmorland, CASun, Oct 21, 4:30 PM PDT · 19337 days ago · 5 km deep · 81 km away
28. 3.984km ESE of Maneadero, B.C., MXSun, Oct 21, 6:48 PM PDT · 19337 days ago · 6 km deep · 79 km away
29. 1.721km WSW of Westmorland, CAWed, Oct 24, 7:42 PM PDT · 19334 days ago · 9 km deep · 78 km away
30. 1.613km E of Holtville, CAFri, Oct 26, 5:42 PM PDT · 19332 days ago · 5 km deep · 78 km away
31. 2.16km WSW of Brawley, CASat, Oct 27, 3:10 AM PDT · 19332 days ago · 5 km deep · 79 km away
32. 2.771km E of Maneadero, B.C., MXThu, Nov 1, 4:50 PM PST · 19326 days ago · 6 km deep · 71 km away
33. 3.143km SSW of Progreso, B.C., MXFri, Nov 9, 8:05 AM PST · 19319 days ago · 6 km deep · 4 km away
34. 2.854km ENE of Maneadero, B.C., MXSat, Nov 10, 3:27 AM PST · 19318 days ago · 6 km deep · 49 km away

Before

1. 2.526km ENE of Pine Valley, CAFri, Sep 14, 12:04 AM PDT · 19375 days ago · 10 km deep · 84 km away
2. 2.824km ENE of Pine Valley, CAThu, Sep 13, 10:56 PM PDT · 19375 days ago · 11 km deep · 83 km away
3. 3.226km ENE of Pine Valley, CAThu, Sep 13, 10:24 PM PDT · 19375 days ago · 8 km deep · 83 km away
4. 2.612km SSE of Pine Valley, CAThu, Sep 13, 5:28 PM PDT · 19375 days ago · 7 km deep · 84 km away
5. 3.028km ENE of Pine Valley, CAThu, Sep 13, 3:48 PM PDT · 19375 days ago · 9 km deep · 84 km away
6. 2.526km ENE of Pine Valley, CAThu, Sep 13, 10:40 AM PDT · 19376 days ago · 3 km deep · 83 km away
7. 4.728km NW of Ocotillo, CAThu, Sep 13, 10:30 AM PDT · 19376 days ago · 9 km deep · 82 km away
8. 2.929km S of Progreso, B.C., MXSat, Sep 8, 9:54 AM PDT · 19381 days ago · 6 km deep · 19 km away
9. 2.623km WNW of Ocotillo, CASat, Sep 8, 6:38 AM PDT · 19381 days ago · 8 km deep · 74 km away
10. 2.58km W of Calipatria, CAThu, Sep 6, 10:55 PM PDT · 19382 days ago · 2 km deep · 97 km away
11. 2.96km W of Holtville, CASun, Sep 2, 10:53 AM PDT · 19387 days ago · 6 km deep · 68 km away
12. 2.25km SSW of Holtville, CASun, Sep 2, 10:43 AM PDT · 19387 days ago · 6 km deep · 66 km away
13. 2.59km WNW of Holtville, CASun, Sep 2, 10:40 AM PDT · 19387 days ago · 6 km deep · 70 km away
14. 2.54km W of Brawley, CAFri, Aug 31, 6:23 PM PDT · 19388 days ago · 6 km deep · 81 km away
15. 2.36km NNE of Imperial, CAFri, Aug 31, 6:21 PM PDT · 19388 days ago · 6 km deep · 73 km away
16. 2.23km SW of Brawley, CAFri, Aug 31, 6:06 PM PDT · 19388 days ago · 6 km deep · 81 km away
17. 2.63km WNW of Brawley, CAThu, Aug 30, 10:42 PM PDT · 19389 days ago · 6 km deep · 83 km away
18. 2.41km SSE of Brawley, CAThu, Aug 30, 9:45 PM PDT · 19389 days ago · 5 km deep · 82 km away
19. 2.54km S of Brawley, CAThu, Aug 30, 9:18 PM PDT · 19389 days ago · 8 km deep · 79 km away
20. 2.511km NNW of Campo, CAThu, Aug 30, 5:38 PM PDT · 19389 days ago · 8 km deep · 84 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci3319336. Read Thu, Oct 1, 2026, 6:27 AM UTC.