According to AFAD, a magnitude 3.5 earthquake struck near Merkez, Yalova açıkları (Marmara Denizi) on October 10, 2026. It was recorded at 10:08 PM GMT+3 at a depth of 8.0 km.
Magnitude and location may later be revised by AFAD.
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Magnitude
M3.5
ML · Minor
Depth
8.0 km
Shallow
Time (UTC)
07:08:49 PM
October 10, 2026
Local time
10:08 PM
October 10, 2026 · GMT+3
The epicenter was about 50 km from Istanbul.
Since this earthquake, 8 earthquakes have been recorded within 50 km of the epicenter; the largest was M2.9.
| Time (UTC) | Magnitude | Depth | Location | Distance | Record |
|---|---|---|---|---|---|
| M1.4 | 7.0 km | Gemlik (Bursa) | 25 km | AFAD | |
| M1.3 | 7.1 km | Gemlik (Bursa) | 26 km | AFAD | |
| M1.4 | 8.9 km | Marmara Denizi - [04.37 km] Merkez (Yalova) | 1 km | AFAD | |
| M2.9 | 7.2 km | Marmara Denizi - [05.93 km] Merkez (Yalova) | 2 km | AFAD | |
| M0.9 | 6.5 km | Gemlik (Bursa) | 26 km | AFAD | |
| M0.9 | 7.0 km | Marmara Denizi - [02.75 km] Merkez (Yalova) | 3 km | AFAD | |
| M1.5 | 7.0 km | Marmara Denizi - [04.77 km] Merkez (Yalova) | 1 km | AFAD | |
| M2.3 | 10 km | Marmara Denizi - [04.43 km] Merkez (Yalova) | 1 km | AFAD |
From 1990 until this earthquake, 40 earthquakes of magnitude 4.5 or greater were recorded within 100 km of the epicenter. The largest was an M7.6 earthquake on August 17, 1999.
Source: USGS earthquake catalogue (ComCat).
The earthquake occurred near Merkez, Yalova açıkları (Marmara Denizi) at 40.698° N, 29.256° E, at a depth of 8.0 km. The nearest town was Istanbul, about 50 km away.
AFAD reported a magnitude of ML 3.5 (minor). How strongly it was felt, and any damage, also depend on depth, distance from the epicenter and local ground conditions.
Since this earthquake, 8 earthquakes have been recorded within 50 km of the epicenter; the largest was M2.9.
Earthquake data: USGS (public domain); Turkey: AFAD; Europe: EMSC-CSEM SeismicPortal (CC BY 4.0); Japan: JMA; New Zealand: GeoNet (CC BY 3.0 NZ); Australia: Geoscience Australia (CC BY 4.0); Canada: NRCan (OGL-Canada); USGS backup: GFZ GEOFON (CC BY 4.0). Map: © OpenMapTiles © OpenStreetMap contributors. Borders: Natural Earth.