The centre's head Hanik Humaida said the first eruption occurredat 2:03 am (local time) for 134 seconds with an amplitude of 40 mm. The firsthot clouds rolled up to 1,300 meters to the southwest. The second came at 5:11am for 150 seconds with an amplitude of 48 mm, belching ash clouds as far as1,500 meters to the southwest.
Besides,during 00:00 to 6:00 am, Merapi also released incandescent lava five times asfar as 1,000 meters to the southwest.
"Currently, the activity of Mount Merapi is still at thethird-highest level," added Humaida.
Areas which are potentially dangerous are several rivers wherelava and hot clouds are flowing in the south-southwest sector such as theKuning, Boyong, Bedog, Krasak, Bebeng, and Putih Rivers, as well as Gendol Riverin the southeast side.
Indonesian authorities urged residents or tourists not to moveto these dangerous areas.
Located in borders of Central Java and Yogyakarta provinces, thevolcano's violent eruption killed more than 200 people and forced hundreds ofthousands to flee their homes in 2010./.