M4.9 earthquake 8 km ESE of Cajelitos, Mexico
A magnitude 4.9 earthquake struck 8 km ESE of Cajelitos, Mexico on Sat, Aug 1, 1981, 5:20 AM CST (11:20 UTC), 64 km (40 mi) below the surface.
A larger quake followed: M5.4 4 km W of San Marcos, Mexico. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb), light
- Local time
- UTC
- 1981-08-01 11:20:04 UTC
- Depth
- 63.9 km (39.7 mi), shallow
- Epicenter
- 17.228° N, 99.431° 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.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 4 in the 60 days after this one and 0 in the 30 days before it.
After
- 4.19 km SW of Los Mogotes, Mexico · 16451 days ago · 33 km deep · 84 km away
- 4.50 km WNW of Valle del Río, Mexico · 16451 days ago · 33 km deep · 61 km away
- 5.44 km W of San Marcos, Mexico · 16441 days ago · 22 km deep · 48 km away
- 4.34 km WSW of Llano de la Puerta, Mexico · 16441 days ago · 25 km deep · 57 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001f2a. Read Tue, Sep 22, 2026, 7:51 AM UTC.