Historical tsunamis · September 1343
1343 Marmara Sea, Strait of Bosporus tsunami
Turkey
The tsunami of September 1343 originated near Marmara Sea, Strait of Bosporus (Turkey).
Key facts
- Date
- September 1343
- Cause
- Earthquake
- Magnitude
- M7.5
- Maximum documented water height
- —
- Deaths
- many (about 101–1,000)
- Houses destroyed
- many (about 101–1,000)
- Damage
- severe (about US$ 5–25 million)
- Observation records
- 2
- Countries affected
- 1
It was triggered by a magnitude 7.5 earthquake.
2 observation sites in 1 countries are recorded.
The database records many (about 101–1,000) deaths.
Houses destroyed: many (about 101–1,000).
Damage is estimated at severe (about US$ 5–25 million).
Map of observation sites
2Each 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 | 2 | — | — | — |
Highest documented water heights
2 / 2Individual 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 |
|---|---|---|---|
| Istanbul (Constantinople) | — | 64 km | Turkey |
| Marmara Sea, Strait of Bosporus | — | 64 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.