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Marmara Sea Quake of Magnitude 5 Rattles Istanbul, No Immediate Damage Reported

Seismologists link the tremor to April’s Marmara rupture, cautioning that the stressed fault segment could produce stronger events.

Overview

  • AFAD measured a magnitude 5.0 quake at 14:55 local time with a depth of about 6.7 kilometers off Marmaraereğlisi in Tekirdağ.
  • Kandilli Observatory assessed the event slightly stronger at magnitude 5.3, reflecting routine differences in initial readings.
  • Shaking was widely felt across Istanbul and Bursa as residents evacuated buildings and gathered in open areas, and schools were cleared as a precaution.
  • AFAD reported no adverse situation and the Istanbul administration noted no confirmed damage, while teams began citywide building inspections.
  • Interior Minister Ali Yerlikaya urged calm, and an expert warned the SilivriBüyükçekmece fault zone remains stressed following the April 23 magnitude 6.2 quake.