Mexico earthquakes

M3.9 earthquake 13km NW of Progreso, B.C., MX

A magnitude 3.9 earthquake struck 13km NW of Progreso, B.C., MX on Thu, Apr 21, 1960, 10:08 AM GMT-8 (18:08 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M4.2 18km WSW of El Centro, CA. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.9 (ml), minor
Local time
UTC
1960-04-21 18:08:34 UTC
Depth
6.0 km (3.7 mi), shallow
Epicenter
32.655° N, 115.694° W
Region
Mexico
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 3.7 km horizontally, 31.6 km in depth
Magnitude uncertainty
±0.25
Depth from
Operator assigned
Station coverage gap
271°, poorly surrounded by stations
Stations used
4

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 3.515km NW of Progreso, B.C., MX · 24261 days ago · 6 km deep · 2 km away
  2. 3.413km WNW of Progreso, B.C., MX · 24261 days ago · 6 km deep · 5 km away
  3. 3.211km NW of Progreso, B.C., MX · 24261 days ago · 6 km deep · 2 km away
  4. 4.218km WSW of El Centro, CA · 24261 days ago · 6 km deep · 7 km away
  5. 3.724km W of Westmorland, CA · 24258 days ago · 6 km deep · 45 km away
  6. 3.22km ESE of Julian, CA · 24244 days ago · 16 km deep · 95 km away
  7. 3.415km SSW of Borrego Springs, CA · 24241 days ago · 6 km deep · 85 km away
  8. 4.022km SW of Progreso, B.C., MX · 24239 days ago · 6 km deep · 22 km away
  9. 3.612km E of Ocotillo Wells, CA · 24234 days ago · 6 km deep · 59 km away
  10. 3.315km ENE of Julian, CA · 24229 days ago · 6 km deep · 86 km away
  11. 3.842km NE of Ensenada, B.C., MX · 24226 days ago · 6 km deep · 81 km away
  12. 4.044km ENE of Ensenada, B.C., MX · 24221 days ago · 6 km deep · 81 km away
  13. 4.342km SSW of Progreso, B.C., MX · 24210 days ago · 6 km deep · 47 km away

Before

  1. 3.29km SE of Brawley, CA · 24268 days ago · 6 km deep · 36 km away
  2. 3.618km E of Ocotillo, CA · 24269 days ago · 6 km deep · 12 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3350781. Read Wed, Sep 23, 2026, 11:34 AM UTC.