450 Earthquake: Instanbul (Constantinople), Turkey
An earthquake struck Instanbul (Constantinople), Turkey in 450. 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
- 450
- Place
- Instanbul (Constantinople), Turkey
- Intensity
- 5 on the Modified Mercalli scale
- Tsunami
- Yes: the tsunami it caused
- Epicenter
- 40.400° N, 28.400° E
- Country
- Turkey
The toll
The record gives no deaths, injuries or damage for this earthquake.
What the record says
NCEI’s account, from the sources it cites.
450, January. Constantinople. Violent shocks. Lycosthenes gives the date 454. (reference #521)
450. 41.04 N, 28.98 E, intensity V. Vicinity of Istanbul. (reference #1071)
450, January. Sea of Marmara, Constantinople (tsunami intensity iii). Many Historians of the time mention an earthquake in Constantinople which occurred in January 450. From their narrations it appears that the shock was not very severe and that no damage of any magnitude was caused. Except Lycosthenes none of the authorities consulted mentions a seismic seawave. Lycosthenes, most probably referring to the earthquake at Constantinople of 447, says that: <<... the earth opened in many chasms, and many cities in Asia were overthrown. The sea abandoned its shores and fire appeared in the sky. The earthquake lasted for six months ...>> (reference #23)
...evidence points strongly to an earthquake on Sunday 26 January. The only year during Theodosius's reign in which the 26 January fell on a Sunday was AD 447, which would indicate that this event was not a later event on 26 January AD 450... (ref #9116)
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 28, 1970, Gediz, Turkey
- March 18, 1953, Yenice, Onon, Turkey
- October 11, 367, Iznik,nicaea, Turkey
- April 11, 1855, Bursa, Turkey
- June 20, 1943, Hendek, Adapazari, Turkey
- September 21, 1939, Turkey
More
Significant earthquakes of 450The 400sRecent earthquakes near here
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 9972.