Mexico earthquakes

M4.9 earthquake 70km ENE of Maneadero, B.C., MX

A magnitude 4.9 earthquake struck 70km ENE of Maneadero, B.C., MX on Wed, May 8, 1985, 4:40 PM PDT (23:40 UTC), 6 km (4 mi) below the surface.

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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: 4.9 (ML, local (Richter)), light
Magnitude from: Southern California Seismic Network
Local time: Wed, May 8, 1985, 4:40 PM PDT
UTC: 1985-05-08 23:40:21 UTC
Depth: 5.7 km (3.5 mi), shallow
Epicenter: 31.897° N, 115.856° W
Region: Mexico
Tsunami flag: No
Status: Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
4.87	ML, local (Richter)	Southern California Seismic Network	Preferred · Final · 12 stations
5.1	mb, body-wave	USGS National Earthquake Information Center	Reviewed · 12 stations
5.32	Mw, moment	ISC-GEM global catalog	Final · ±0.2

What happened

The USGS’s account of the effects of this earthquake.

Felt (IV) at Ramona, California. Felt (III) at Calexico, Chula Vista, El Centro, Lakeside and National City, California.

From the USGS event page for ci64704. U.S. Geological Survey text and figures are in the public domain.

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Depth from: Operator assigned
Station coverage gap: 199°, poorly surrounded by stations
Stations used: 0

Nearest places

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

Nearby

Within 100 km, magnitude 1.9 and up: 198 in the 60 days after this one and 28 in the 30 days before it.

After

The first 60 of 198.

Before

Earthquakes today Mexico earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci64704 (also filed as usp0002ejq, iscgem524474). Read Sun, Oct 4, 2026, 8:03 PM UTC.