April 23, 2025 Earthquake: Istanbul, Bursa, Tekirdag, Turkey
A magnitude 6.2 earthquake struck Istanbul, Bursa, Tekirdag, Turkey on April 23, 2025 at 09:49:10 UTC, 10 km below the surface. It caused a tsunami.
Map
Where it struck, with the other significant earthquakes within 200 km. Circles are sized and colored by magnitude; select one for its page.
The earthquake
- Date
- April 23, 2025
- Time
- 09:49:10 UTC
- Place
- Istanbul, Bursa, Tekirdag, Turkey
- Magnitude
- 6.2 (Mw)
- Focal depth
- 10 km (6 mi)
- Tsunami
- Yes: the tsunami it caused
- Epicenter
- 40.840° N, 28.142° E
- Country
- Turkey
The toll
- Injuries
- 236
- Damage
- $100 million
Where the literature gives no number, NCEI records a description on a scale of 1 to 4, printed here in its words. Damage is in millions of US dollars of the year of the event, not adjusted for inflation.
What the record says
NCEI’s account, from the sources it cites.
A strong earthquake of 6.2 M at a depth of 10 km occurred in the Sea of Marmara (Turkiye) on 23 April at 9.49 UTC (12.49 local time). The epicentre was located offshore close to the coast (approximately 35 km south-west) of the Greater Istanbul Metropolitan Area, north-western Türkiye. Four aftershocks from 4.0 M to 5.0 M have been recorded in the area on the same day as the main event. Media report, as of 24 April, 236 injured people, most of them slightly injured due to panic attacks. In addition, media also report 12 evacuated buildings. As of 24 April, there are no reports of fatalities (reference #14007)
236 injured, 100 million USD in damages (reference #1250)
Other significant earthquakes nearby
Within 200 km, the deadliest first.
- August 17, 1999, Istanbul, Kocaeli, Sakarya, Turkey
- May 25, 1719, Turkey
- September 10, 1509, Istanbul, Turkey
- May 22, 1766, Turkey
- August 9, 1912, Marmara Sea, Turkey
- February 28, 1855, Tayabas, Bursa, Turkey
- September 2, 1754, Izmit, Turkey
- July 10, 1894, Turkey
- April 29, 1855, Bursa, Turkey
- March 18, 1953, Yenice, Onon, Turkey
- October 11, 367, Iznik,nicaea, Turkey
- April 11, 1855, Bursa, Turkey
- 1577, Balikesir, Turkey
- April 19, 1878, Izmit, Esme, Labinia, Turkey
- June 18, 1953, Edirne, Turkey
More
Significant earthquakes of 2025The 2000sEvery quake the USGS located in 2025Recent earthquakes near hereThis day in weather history
Sources
Significant earthquakes from NOAA’s National Centers for Environmental Information, Global Historical Hazard Database, cited as NCEI/WDS, doi:10.7289/V5PN93H7. Public domain. Read 2026-09-24. NCEI earthquake 10837.