Mount Merapi Erupts, Sand Rain Reaches Klaten

JAKARTA - Mount Merapi erupted at around 13.45 WIB, Wednesday, January 27. From the Twitter account, the Information Network for the Ring of Merapi (JALIN Merapi), it is said that this eruption caused sand to rain in Tegalmulyo, Klaten.

"Sand rain, sand rain", said someone who recorded the video, which was uploaded to Twitter.

It's raining ash in Tegalmulyo #canguk #pajegan klaten pic.twitter.com/MXRVB49lfw

- JALIN Merapi (@jalinmerapi) January 27, 2021

Meanwhile, one of the residents of Kaliurang, Yogyakarta, Fandy said that residents around the slopes of Mount Merapi did not seem to panic about this condition.

From where he was standing, black clouds were rising but no lava was visible. He said this condition is different than what happened when Merapi erupted in 2010.

"There is no panic. But this is a different atmosphere from 2010. There is currently no ash rain", he said when contacted by VOI from Jakarta, Wednesday, January 27.

Meanwhile, another Kaliurang resident, Adi Nugroho, who was contacted by VOI from Jakarta, said that the residents who were within a radius of 8 kilometers were evacuated. He got the information from a handy talky in his village.

"The residents around 8 kilometers have been evacuated, basically those above have been isolated. In the Kaliurang area, Cangkringan", said Kaliurang resident Adi Nugroho, contacted by VOI from Jakarta.

He said the smoke from the eruption appeared to be carried by the wind towards Klaten and Boyolali. Meanwhile, the avalanches led to Kaliurang.

Previously reported, Mount Merapi, on the border of Central Java and Yogyakarta Special Region, emitted volcano-pyroclastic Flow 14 times. It has a maximum sliding distance of 1,500 meters to the southwest or the upper reaches of Kali Krasak and Boyong.

"As a result of this hot cloud, it was reported that light ash rain had occurred in several villages in Tamansari District, Boyolali Regency, and Boyolali City", said Head of the Geological Disaster Research and Technology Development Center (BPPTKG), Hanik Humaida.

He asked the public to anticipate the disturbance caused by the volcanic ash.

Based on the observation period starting at 06.00-10.00 WIB, the first volcano-pyroclastic Flow came out at 06.03 WIB which was recorded on the seismogram with an amplitude of 40 mm and a duration of 83 seconds. The sliding distance is estimated to be 800 meters to the southwest with the column height being washed by the wind to the eastward slope.

The second one glided at 06.08 WIB recorded on the seismogram with an amplitude of 43 mm and a duration of 111 seconds. volcano-pyroclastic Flow rolled into Kali Karasak and Boyong with a sliding distance of 1,000 meters and the column height was swept by the wind to the east slope.

Furthermore, volcano-pyroclastic Flow occurred at 06.21 WIB with an amplitude of 45 mm and a duration of 117 seconds, and a glide distance of 1,000 meters to the southwest.

Meanwhile, the last volcano-pyroclastic Flow glide occurred at 09.42 WIB. This hot avalanche cloud was recorded with an amplitude of 15 mm and a duration of 90 seconds. A distance of 900 meters to the southwest.

The BPPTKG maintains the status of Mount Merapi at Level III or Alert with the current potential hazards in the form of lava avalanches and hot clouds in the south-southwest sector, including the Boyong, Bedog, Krasak, Bebeng, and Putih rivers for a maximum of five kilometers.

Meanwhile, in the event of an explosive eruption, the eruption of volcanic material can reach a radius of three km from the summit.