M4.3 earthquake 18 km WSW of San Nicolás, Mexico
A magnitude 4.3 earthquake struck 18 km WSW of San Nicolás, Mexico on Thu, Jul 17, 1986, 12:51 PM CST (18:51 UTC), 16 km (10 mi) below the surface.
A larger quake followed: M4.4 22 km SSW of Las Vigas, Mexico. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb), light
- Local time
- UTC
- 1986-07-17 18:51:28 UTC
- Depth
- 15.9 km (9.9 mi), shallow
- Epicenter
- 16.327° N, 98.668° 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 1.5 and up: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.422 km SSW of Las Vigas, Mexico · 14667 days ago · 33 km deep · 78 km away
- 4.55 km SSW of Pinotepa Nacional, Mexico · 14637 days ago · 33 km deep · 63 km away
- 4.64 km NNE of Santa María Ipalapa, Mexico · 14627 days ago · 53 km deep · 79 km away
Before
Earthquakes todayMexico earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002w45. Read Tue, Sep 22, 2026, 9:46 AM UTC.