1.5MAGNITUDE

Magnitude 1.5 Earthquake in İstanbul, Turkey

18 October 2026, 11:21 · 13 days ago
Estimated intensity: I · Micro / weak
LocationSILIVRI ACIKLARI-ISTANBUL (MARMARA DENIZI)
Magnitude1.5
Depth20.2 km
Coordinates40.8575, 28.2255
Provinceİstanbul

A magnitude 1.5 earthquake was recorded near SILIVRI ACIKLARI-ISTANBUL (MARMARA DENIZI) on 18 October 2026, 11:21 Turkey time (08:21 UTC). The focal depth was about 20.2 km (shallow).

This is a micro earthquake that is usually not felt. The estimated intensity at the epicentre is I (Micro / weak).

Nearest provincial capitals: Tekirdağ (~62 km), İstanbul (~66 km), Yalova (~91 km).

7 further earthquakes were recorded within 100 km afterwards.

Turkish version

Aftershocks and later earthquakes (100 km, 3 days)

MagnitudeLocationTime (Turkey)DepthDistance
1.7MARMARA DENIZI18.10.2026 11:43 13 days ago12.6 km33 km
1.2BASKOY-NILUFER (BURSA)19.10.2026 12:39 12 days ago0.0 km85 km
1.4HACIVELIOBA-GONEN (BALIKESIR)20.10.2026 01:11 12 days ago15.3 km100 km
2.0GERLENGEC-BIGA (CANAKKALE)20.10.2026 03:36 11 days ago8.0 km90 km
1.9MARMARA DENIZI20.10.2026 05:45 11 days ago8.8 km98 km
1.4SAHINYURDU-GEMLIK (BURSA)20.10.2026 08:06 11 days ago0.0 km93 km
2.9MARMARA DENIZI20.10.2026 12:04 11 days ago11.6 km11 km