Over 40 earthquakes rock Türkiye's Istanbul within three hours

Some 47 earthquakes struck Türkiye's Istanbul within just three hours on April 23. 

After a series of earthquakes, aftershocks are still being felt in the region, Caliber.Az reports per Turkish media.

Another aftershock occurred at 17:55 local time (GMT+3). The tremor registered a magnitude of 3.5, with the epicentre located at a depth of 14.58 kilometres.

14:35

After a 3.9-magnitude earthquake off the coast of Silivri in Istanbul, a second, more powerful earthquake with a magnitude of 6.2 struck the area. 

The tremor, which lasted for 10 seconds, caused widespread panic, Caliber.Az reports, citing the official X (formerly Twitter) account of Türkiye’s Disaster and Emergency Management Presidency (AFAD).

#DEPREM
Büyüklük:3.9 (Ml)
Yer:Marmara Denizi - [25.54 km] Silivri (İstanbul)
Tarih:2025-04-23
Saat:12:13:05 TSİ
Enlem:40.84028 N
Boylam:28.22361 E
Derinlik:6.99 km
Detay:https://t.co/Eo17xvxwul@afadbaskanlik @trthaber @anadoluajansi

— AFAD Deprem (@DepremDairesi) April 23, 2025

The earthquake was recorded at 13:13, with its epicentre located in the Sea of Marmara, off the coast of Istanbul’s Silivri district.

The earthquake occurred at a depth of 6.99 km.

A second strong earthquake followed at 13:39, also off the coast of Silivri. Reports state that the magnitude of this second quake was approximately 6.2. It occurred at a depth of 6.99 km.

#DEPREM
Büyüklük:6.2 (Mw)
Yer:Marmara Denizi - [23.16 km] Silivri (İstanbul)
Tarih:2025-04-23
Saat:12:49:10 TSİ
Enlem:40.86 N
Boylam:28.24444 E
Derinlik:6.92 km
Detay:https://t.co/yDybZf2bx3@afadbaskanlik @trthaber @anadoluajansi

— AFAD Deprem (@DepremDairesi) April 23, 2025

By Khagan Isayev