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A magnitude 3.5 earthquake struck the Marmara Sea on Saturday evening, with tremors felt across Istanbul, Türkiye’s Disaster and Emergency Management Authority (AFAD) reported.
The earthquake occurred at 10:08 p.m. local time, AFAD said. The agency placed the epicenter in the Marmara Sea, about 4.66 kilometers from the central district of Yalova, a city on the sea’s southern coast roughly 90 kilometers southeast of Istanbul.
The quake struck at a depth of 7.96 kilometers, according to AFAD data, with coordinates placing it at 40.698 degrees north latitude and 29.256 degrees east longitude.
Residents in Istanbul, a metropolis of more than 15 million people situated along the Marmara Sea’s northern shore, reported feeling the shaking.
The Marmara Sea region sits near the North Anatolian Fault, one of the most active fault lines in the world, and the area has long been monitored for seismic activity given its proximity to densely populated Istanbul.
Magnitude 3.5 earthquakes are generally classified as minor and rarely cause structural damage, though they can be felt by people nearby, particularly in areas with soft ground or tall buildings.
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