Mexico earthquakes

M4.8 earthquake 11km NW of Delta, B.C., MX

A magnitude 4.8 earthquake struck 11km NW of Delta, B.C., MX on Fri, Feb 22, 2008, 11:31 AM PST (19:31 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: 4.8 (ML, local (Richter)), light
Magnitude from: Southern California Seismic Network
Local time: Fri, Feb 22, 2008, 11:31 AM PST
UTC: 2008-02-22 19:31:18 UTC
Depth: 6.0 km (3.7 mi), shallow
Epicenter: 32.421° N, 115.285° W
Region: Mexico
Felt reports: 238
Strongest shaking: VI, strong shaking
PAGER alert: Green
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
4.78	ML, local (Richter)	Southern California Seismic Network	Preferred · Final · ±0.117 · 233 stations
4.9	Mwc, centroid moment	USGS National Earthquake Information Center	Reviewed
4.9	Mwc, centroid moment	Global CMT project	Preliminary

What happened

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

Felt (V) at Brawley; (IV) at Calexico, Imperial and Winterhaven; (III) at Chula Vista, El Centro and San Diego; (II) at Blythe and La Jolla, California. Also felt at Boulevard, El Cajon, Heber, Imperial Beach, Lakeside and La Mesa. Felt (IV) at Yuma and (III) at Somerton, Arizona. Also felt at Parker, Roll and Wellton.

From the USGS event page for ci14352012. U.S. Geological Survey text and figures are in the public domain.

Shaking

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

Strongest estimated: VI, strong shaking
Map: Automatic

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

Did you feel it?

238 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.

Estimated impact

The USGS PAGER system estimates deaths and economic losses from the shaking and the population and buildings exposed to it.

Alert level: Green: little or no damage or loss of life expected

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting: Strike-slip
Nodal plane 1: Strike 242°, dip 67°, rake 1°
Nodal plane 2: Strike 151°, dip 89°, rake 157°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 1.2 km horizontally, 31.6 km in depth
Magnitude uncertainty: ±0.12
Depth from: Operator assigned
Station coverage gap: 213°, poorly surrounded by stations
Stations used: 33

Nearest places

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

Nearby

Within 100 km, magnitude 1.8 and up: 193 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of 193.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci14352012 (also filed as gcmtc200802221931a, usp000fzpw, gcmt20080222193117). Read Sat, Oct 3, 2026, 8:32 PM UTC.