Turkey earthquakes

M5.7 earthquake 28 km NNE of Gökçeada, Turkey

A magnitude 5.7 earthquake struck 28 km NNE of Gökçeada, Turkey on Sun, Jul 6, 2003, 10:10 PM GMT+3 (19:10 UTC), 17 km (11 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: 5.7 (Mwb, body-wave moment), moderate
Magnitude from: USGS National Earthquake Information Center
Local time: Sun, Jul 6, 2003, 10:10 PM GMT+3
UTC: 2003-07-06 19:10:28 UTC
Depth: 17.1 km (10.6 mi), shallow
Epicenter: 40.445° N, 26.024° E
Region: Turkey
Strongest shaking: V, moderate 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
5.7	Mwb, body-wave moment	USGS National Earthquake Information Center	Preferred · Reviewed
5.7	Mw, moment	ISC-GEM global catalog	Final · ±0.1
5.7	Mwc, centroid moment	Global CMT project	Preliminary

What happened

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

Felt in much of northwestern Turkey as far south as Balikesir and as far east as Yalova. Felt at Kurdzhali, Sofia and in much of southern Bulgaria. Also felt at Kavala, Greece.

From the USGS event page for usp000c1tz. 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: V, moderate shaking
Peak ground acceleration: 9.6% of gravity
Peak ground velocity: 2.0 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.

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 169°, dip 71°, rake 7°
Nodal plane 2: Strike 77°, dip 84°, rake 161°

How well it is located

Reviewed by a seismologist.

Station coverage gap: 15°
Stations used: 439

Nearest places

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

Nearby

Within 100 km, magnitude 2.7 and up: 63 in the 60 days after this one and 15 in the 30 days before it.

After

The first 60 of 63.

Before

Earthquakes today Turkey earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp000c1tz (also filed as gcmtb070603f, gcmt20030706191028, atlas20030706191028, iscgem6993080). Read Thu, Oct 1, 2026, 5:25 AM UTC.