Photo taken on April 23, 2021 shows white smoke spewing from Mount Merapi as seen from Kaliurang in Yogyakarta, Indonesia.Photo:Xinhua

Indonesia's Mount Merapi on Tuesday spewed ash clouds again as far as 1,500 meters to the southwest, according to the Geological Disaster Technology Research and Development Center.

"The seismogram records hot cloud avalanches with an amplitude of 60 mm and a duration of 135 seconds," the center's head Hanik Humaida said.

Photo taken on April 23, 2021 shows white smoke spewing from Mount Merapi as seen from Sleman in Yogyakarta, Indonesia.Photo:Xinhua

The seismogram also noted that the most active volcano in Indonesia emitted incandescent lava 19 times from midnight to 6:00 a.m. local time as far as 1,000 meters to the southwest.

Straddling Central Java and Yogyakarta provinces, Merapi is currently at the third-highest level or alert status.

Photo taken on April 23, 2021 shows white smoke spewing from Mount Merapi as seen from Sleman in Yogyakarta, Indonesia.Photo:Xinhua

 

Photo taken on April 23, 2021 shows volcanic materials spewing from Mount Merapi as seen from Kaliurang in Yogyakarta, Indonesia.Photo:Xinhua

 

Photo taken on April 23, 2021 shows white smoke spewing from Mount Merapi as seen from Sleman in Yogyakarta, Indonesia.Photo:Xinhua

The authorities estimated the eruption of Mount Merapi's volcanic materials could reach a radius of 3 km from the peak.

The authorities prohibit mining activities in rivers that originate in Merapi, namely Kuning, Boyong, Bedog, Krasak, Bebeng, and Putih rivers.

In 2010, the eruption of Merapi killed more than 200 people and displaced hundreds of thousands of others.