Algeria earthquakes

M5.7 earthquake 10 km WNW of Dellys, Algeria

A magnitude 5.7 earthquake struck 10 km WNW of Dellys, Algeria on Wed, May 21, 2003, 7:51 PM GMT+1 (18:51 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.8 northern Algeria. This one was a foreshock.

Dellys forecast More in Algeria

Map

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

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The earthquake

Magnitude: 5.7 (mb), moderate
Local time: Wed, May 21, 2003, 7:51 PM GMT+1
UTC: 2003-05-21 18:51:10 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 36.970° N, 3.813° E
Region: Algeria
Strongest shaking: VII, very strong shaking
Tsunami flag: No
Status: Reviewed by a seismologist

Shaking

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

Strongest estimated: VII, very strong shaking
Peak ground acceleration: 23.0% of gravity
Peak ground velocity: 2.8 cm/s
Map: Automatic

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

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: 66°
Stations used: 197

Nearest places

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

Nearby

Within 100 km, magnitude 2.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp000bxph (also filed as atlas20030521185110, iscgem6845787). Read Tue, Sep 22, 2026, 7:46 PM UTC.