Mexico earthquakes

M3.4 earthquake 10km NNE of Delta, B.C., MX

A magnitude 3.4 earthquake struck 10km NNE of Delta, B.C., MX on Mon, Dec 28, 2020, 6:34 AM PST (14:34 UTC), 28 km (17 mi) below the surface.

A larger quake followed: M4.0 9km SW of Niland, CA. This one was a foreshock.

Ciudad Guadalupe Victoria forecast More in Mexico

Map

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

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The earthquake

Magnitude: 3.4 (ML, local (Richter)), minor
Magnitude from: Southern California Seismic Network
Local time: Mon, Dec 28, 2020, 6:34 AM PST
UTC: 2020-12-28 14:34:53 UTC
Depth: 27.8 km (17.3 mi), shallow
Epicenter: 32.438° N, 115.165° W
Region: Mexico
Felt reports: 2
Strongest shaking: III, weak shaking
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
3.37	ML, local (Richter)	Southern California Seismic Network	Preferred · Final · ±0.277 · 37 stations
3.2	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.06 · 36 stations
4.02	Mw, moment	EW	Preliminary · ±0.2566 · 9 stations

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated: III, weak shaking
Peak ground acceleration: 0.8% of gravity
Peak ground velocity: -1.5 cm/s
Map: Automatic

USGS ShakeMap: estimated shaking intensity around the epicenter — Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

2 people reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 0.6 km horizontally, 0.8 km in depth
Magnitude uncertainty: ±0.28
Depth from: From location
Station coverage gap: 91°
Stations used: 28

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 58 in the 30 days before it.

After

The first 60 of 200.

Before

Earthquakes today Mexico earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci39505887 (also filed as ew1609166085, us6000d3pa). Read Mon, Oct 5, 2026, 4:16 AM UTC.