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M5.5 Depth: 10.0 km

M5.5 Earthquake near Istanbul (Turkey)

UTC time: 2025-04-23 09:49:11 UTC Local time: —

About this earthquake

A magnitude M5.5 earthquake was recorded near Istanbul (Turkey) on April 23, 2025 at 09:49 UTC. The hypocenter lay relatively close to the surface at around 10 km, increasing how strongly it was felt. Earthquakes of this magnitude can damage poorly built structures.

The event was recorded by USP. Turkey: 90 earthquakes were recorded in the past 24 hours, the strongest reaching M3.0.

Details

Magnitude
M5.5
Depth
10.0 km
UTC time
2025-04-23 09:49:11 UTC
Local time
—
Country
Turkey
State
Istanbul
City
Istanbul
Source
usp
Coordinates
40.85578, 28.29899

Map

Depth profile

Depth profile Depth: 10 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 10 km
Shallow
10 km
10 km — close to the regional average (8.5 km)
Regional average: 8.5 km
Why depth matters

Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.

Depth classes per USGS

Nearby population centers

Distances are straight-line distances from the epicenter. Population data: GeoNames.

PlaceDistanceDirectionPopulation
Siliviri24.7 kmN53'167
Büyükçekmece30.2 kmNE163'140
Küçükçekmece42.4 kmE792'030

GeoNames · CC BY 4.0

Volcanoes nearby

  • Kula
    Distance: 254 km ·Volcanic field ·Elevation: 750 m ·Turkiye
  • Nisyros
    Distance: 485 km ·Stratovolcano ·Elevation: 698 m ·Last eruption: 1888 ·Greece

Subsequent earthquakes nearby

Events recorded after this earthquake within 150 km. They are not automatically classified as aftershocks.

First 6 hours37
First 24 hours65
First 72 hours66
Strongest subsequent eventM5.5
M4.42025-04-23 09:59:29 UTC4.5 km M5.52025-04-23 10:02:36 UTC25.9 km M2.92025-04-23 13:25:16 UTC8.7 km M3.02025-04-23 13:29:10 UTC5.6 km M2.22025-04-23 13:32:08 UTC6.7 km M1.32025-04-23 13:34:17 UTC10.6 km M2.72025-04-23 13:45:37 UTC12.5 km M1.82025-04-23 13:53:10 UTC7.2 km M2.42025-04-23 13:55:25 UTC2.1 km M1.52025-04-23 13:57:28 UTC3.1 km M3.02025-04-23 13:59:56 UTC19.5 km M2.92025-04-23 13:59:57 UTC22.1 km

Historic earthquake map · Turkey

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Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · Turkey

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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