One of the deadliest earthquakes in modern Turkish history, killing over 18,000 people and causing up to $20 billion in damage.
Key Facts
- Moment Magnitude
- 7.6
- Official Death Toll
- 18,373 people
- Injured
- 48,901 people
- Missing
- 5,840 people
- Estimated Damage
- $12–$20 billion USD (1999)
- Duration
- 37 seconds
By the Numbers
Location
Cause → Event → Consequence
The earthquake resulted from movement along the North Anatolian Fault, part of a seismic sequence that began in 1939 and produced large earthquakes progressively migrating westward over six decades. The İzmit region lay in the path of this long-running fault activity.
At 03:01 local time on 17 August 1999, a magnitude 7.6 earthquake struck Kocaeli Province at a shallow depth of 15 km, lasting 37 seconds. It reached a maximum Mercalli intensity of X (Extreme), causing widespread structural destruction and triggering a tsunami that contributed at least 155 additional deaths.
The disaster killed at least 18,373 people, injured nearly 49,000, and caused economic losses estimated between $12 billion and $20 billion. It prompted Turkey to establish a dedicated earthquake tax and the National Disaster Insurance Institution, which introduced compulsory earthquake insurance nationwide.
Human Cost
Each dot represents approximately 10,000 deaths. Total estimated: 18,373 (earthquake)