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 Notice had been issued after tremors of 7.7 and 6 degrees in Sulawesi.
There are reports of buildings that have fallen on the island, but no news of casualties.

The meteorological agency of Indonesia suspended the warning of tsunami that was issued after an earthquake of 7.7 degrees on the Richter scale struck the coastal region north of Sulawesi Island in the Pacific Ocean.

The Center for Control of Tsunamis Pacific, the United States, also issued a tsunami alert systems to a regional area of square kilometers around the epicenter, with “destructive potential.” A tsunami is a series of giant waves that can be produced by an underwater volcanic eruption, by shaking of earth and also by the fall of meteorites.

According to the Geological Research Center of the U.S., the earthquake in Indonesia was magnitude 7.5 on the scale of the moment and there was 1:02 a.m. on Monday (local time).

The epicenter is located 136 km from the city of Gorontalo, on Sulawesi, and 1890 km from the capital, Jakarta.

A secondary tremor of 6 degrees Richter was felt around half an hour later in the same region, according to the Indonesian authorities. The U.S. Geological Center estimated the quake at 5.7 secondary.

 
Still no information on casualties, but Indonesian authorities said they were overturned buildings in the town of Tolitoli in Sulawesi. Witnesses said the tremor was felt with strength in Gorontalo.

Indonesia is an archipelago of 17 thousand islands and is located on the so-called “Pacific Ring of Fire,” an area of great seismic and volcanic activity that is hit by about 7 thousand tremors a year, most of small magnitude.

Indonesia launched on Tuesday passed a new high-tech system to detect potential tsunamis and provide more rapid alerts to residents of the region. (Watch the video to firstly)

On December 26, 2004, an earthquake of 9 degrees and struck the Sumatra triggered a tsunami that killed 170 thousand people in Indonesia, most in Aceh.