November 368 Tsunami: Marmara Sea, Turkey
A tsunami caused by a magnitude 6.4 earthquake began at Marmara Sea, Turkey in November 368. Its effects were recorded at 1 place.
Where the waves reached
The source (white) and every runup with a place, colored by the water height recorded there. A ring is a runup NCEI marks doubtful.
- Under 1 m
- 1 to 3 m
- 3 to 10 m
- 10 to 30 m
- 30 m and more
- Height not recorded
The tsunami
- Date
- November 368
- Source
- Marmara Sea, Turkey
- Cause
- Earthquake
- Earthquake
- Magnitude 6.4
- Runups recorded
- 1
- Waters
- Ocean
- How certain
- Erroneous entry
- Source location
- 40.500° N, 29.600° E
The toll
The record gives no deaths, injuries or damage for this tsunami.
What the record says
NCEI’s account, from the sources it cites.
368. 40o30'N, 29o36'E, earthquake magnitude 6.4, intensity VIII. Sea wave in Bithynia. (reference #2427)
Note: this entry is likely associated with the 368 Oct 11 event.
Every runup
Nearest the source first. Heights are above sea level at the time; a tide gauge reads half the wave’s full height.
| Where | Country | Km from source | Water height, m | Inland, m | Measured by | First wave, UTC | Deaths |
|---|---|---|---|---|---|---|---|
| Bithynia | Turkey | Eyewitness observation of water height |
More
Every tsunami in 368The 300sTsunamis of TurkeyThe earthquakeAlerts in force
Sources
Tsunami events and runups 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 tsunami event 3475.