The 1994 Java earthquake, or the 1994 Java tsunami earthquake, occurred on June 3, 1994 at 01:18 local time (on June 2, at 18:18 GMT) off the coast of Indonesia

Indonesia

Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

. The epicenter was off the eastern part of the southern Java

Java

Java is an island of Indonesia. With a population of 135 million , it is the world's most populous island, and one of the most densely populated regions in the world. It is home to 60% of Indonesia's population. The Indonesian capital city, Jakarta, is in west Java...

 coast, near the east end of the Java Trench

Java Trench

The Sunda Trench, earlier known as, and sometimes still indicated as the Java Trench, located in the northeastern Indian Ocean, with a length of and a maximum depth of , is the second-deepest point in the Indian Ocean after Diamantina Trench, which is 8,047 metres deep...

. This earthquake occurred in a region which is normally characterized as weakly seismically coupled. It had a magnitude of M_w 7.8. Earthquakes with slow rupture velocities are the most efficient tsunami generators, and this earthquake was classified as a "slow tsunami earthquake

Tsunami earthquake

A tsunami earthquake is an earthquake that triggers a tsunami of a magnitude that is very much larger than the magnitude of the earthquake as measured by shorter-period seismic waves. The term was introduced by Hiroo Kanamori in 1972. Such events are a result of relatively slow rupture velocities...

" with slow rupture. The triggered tsunami reached Java and Bali

Bali

Bali is an Indonesian island located in the westernmost end of the Lesser Sunda Islands, lying between Java to the west and Lombok to the east...

, with runups up to 14 m in east Java coast and up to 5 m in southwestern Bali coast. More than 200 people were killed in the tsunami. This earthquake could be felt strongly across Bali, central and eastern Java, Lombok

Lombok

Lombok is an island in West Nusa Tenggara province, Indonesia. It forms part of the chain of the Lesser Sunda Islands, with the Lombok Strait separating it from Bali to the west and the Alas Strait between it and Sumbawa to the east...

, and Sumbawa

Sumbawa

Sumbawa is an Indonesian island, located in the middle of the Lesser Sunda Islands chain, with Lombok to the west, Flores to the east, and Sumba further to the southeast. It is in the province of West Nusa Tenggara....

.