Historical tsunamis · Apr 23, 2025, 9:49 AM UTC
2025 Marmara Sea tsunami
Turkey
The tsunami of Apr 23, 2025, 9:49 AM UTC originated near Marmara Sea (Turkey).
Key facts
- Date
- Apr 23, 2025, 9:49 AM UTC
- Cause
- Earthquake
- Magnitude
- M6.2
- Depth
- 10 km
- Maximum documented water height
- 0.06 m
- Injuries
- 236
- Damage
- US$ 100 million
- Observation records
- 5
- Countries affected
- 1
It was triggered by a magnitude 6.2 earthquake at a depth of 10 km.
The highest documented water height was 0.06 m (Balikesir Erdek, Turkey).
5 observation sites in 1 countries are recorded.
Damage is estimated at US$ 100 million.
Map of observation sites
5Each dot is a documented observation site; colour and size show the observed water height. The triangle marks the source.
Observations by country
| Country | Observation records | Maximum documented water height | Deaths | Earliest arrival |
|---|---|---|---|---|
| Turkey | 5 | 0.06 m Balikesir Erdek | — | — |
Highest documented water heights
5 / 5Individual documented observations for this event. Heights come from different measurement types and sources; not every location has a measured height.
| Location / station | Observed height | Distance from source | Country |
|---|---|---|---|
| Balikesir Erdek | 0.06 m | 41 km | Turkey |
| Tekirdag M Eregli | 0.05 m | 21 km | Turkey |
| Tekirdag Sarkoy | 0.05 m | 71 km | Turkey |
| Yalova Esenkoy | 0.04 m | 73 km | Turkey |
| Istanbul Silivri | 0.03 m | 27 km | Turkey |
More tsunamis
Source: NOAA National Centers for Environmental Information (NCEI), Global Historical Tsunami Database. Confirmed events only. Deaths and damage are database estimates; older records are incomplete. Water heights come from different types of observation.