Mount Merapi Releases Hot Cloud of Avalanches with a Gliding Distance of 1,300 Meters Based on data from the BPPTKG, hot clouds of avalanches were recorded on the seismogram with an amplitude of 55 mm. The duration of the hot ... Rabu, 21 April 2021 18:54 TRIBUNBATAM.id, YOGYAKARTA - Mount Merapi emitted hot clouds of avalanche on Wednesday (4/21/2021) at 14:48 WIB. The gliding distance of the hot avalanche clouds is approximately 1,300 meters to the southwest. "There was a hot cloud of avalanches on Mount Merapi on April 21, 2021 at 14:48 WIB," said the Head of the Center for Geological Disaster Research and Technology Development (BPPTKG) Hanik Humaida in a written report on Wednesday (4/21/2021).