The launch of a new GVP website is scheduled for Monday, May 20, 2013.
All times are local (= UTC + 8 hours)
29 September-5 October 2004
Based on information from DVGHM, the Darwin VAAC reported that an eruption at Rinjani on 1 October at 0530 produced a plume to ~600 m above the volcano's summit. No ash was visible on satellite imagery. The volcano was at Aviation Color Code Orange. Visual observations revealed that eruptions on 5 October reached ~4.5 km a.s.l. A news article reported that hikers were banned from climbing the volcano, but the evacuation of villagers near the volcano was deemed unnecessary by local officials.
6-12 October 2004
An eruption occurred at Rinjani on 1 October at 1730 following an increase in seismicity that began on 5 September (0-7 earthquakes occurred per day). DVGHM raised the Alert Level to 3 (on a scale of 1-4) or Orange. During 2-4 October, explosions produced thick gray ash plumes to heights of ~300-800 m above the post-caldera cone, Barujari. The explosions occurred on the NE slope of Barujari cone every 5 to 160 minutes. Seismicity was dominated by explosion earthquakes.
29 April-5 May 2009
CVGHM reported than during 29 April-2 May seismicity from Rinjani increased and tremor was detected. On 2 May, an eruption produced dense brown "smoke" that rose 1 km from Barujari cone and was accompanied by a booming noise. On 4 May, an eruption of ash produced a white to brown plume that rose 500-700 m above the cone and drifted N. Fog often prevented observations. The Alert Level was raised to 2 (on a scale of 1-4). According to a news article, ash fell in the local village of Senaru.
6 May-12 May 2009
CVGHM reported than during 3-7 May seismicity from Rinjani continued to be elevated and tremor was detected. On 4 May, an eruption of ash produced a white-to-brown plume that rose 500-700 m above the Barujari cone and drifted N. No eruption plumes were seen during times of clear weather on 5 and 6 May. On 7 May, thick white "smoke" from Rinjani was noted. The Alert Level remained at 2 (on a scale of 1-4).
10 June-16 June 2009
17 June-23 June 2009
30 December-5 January 2010
Based on a pilot report, the Darwin VAAC reported that on 2 January an ash plume from Rinjani rose to an unspecified altitude. The plume was not identified in satellite imagery; however a meteorological cloud was present in the area.
28 April-4 May 2010
CVGHM reported that observers at a post located 12.5 km NE of Rinjani saw one whitish-colored plume that rose 100 m from the volcano during February. Dense whitish plumes (and possibly brown) rose 500-900 m in March on 26 occasions and as high as 1,500 m in April on 41 occasions. Plumes seen on 1 and 2 May were "chocolate" in color and rose a maximum height of 1,600 m. From February through April seismicity decreased, although the maximum amplitude of earthquakes increased. CVGHM also noted that ash eruptions and ejected incandescent material fell within Rinjani caldera, but some ash was blown out of the caldera. The Alert Level was raised to 2 (on a scale of 1-4) on 2 May.
5 May-11 May 2010
Based on analysis of satellite imagery, the Darwin VAAC reported that on 5 May a possible ash plume from Rinjani rose to an altitude of 5.5 km (18,000 ft) a.s.l. and drifted 150 km NW. The plume was not seen in imagery about six hours later. CVGHM advised the VAAC that intermittent activity could produce ash plumes to 1.5 km (5,000 ft) above the caldera.
19 May-25 May 2010
According to news articles, three eruptions from Rinjani during 22-23 May were accompanied by tremors. Ash and incandescent material was ejected as high as 2 km. Ash plumes drifted 12 km and caused ashfall in multiple areas. Lava flowed into the caldera lake and caused the lake water temperature to rise from 21 to 35 degrees Celsius.
Source: RTT News
17 November-23 November 2010
CVGHM reported that during June-15 November seismicity from Rinjani decreased; visual observations indicated no activity since August. On 19 November the Alert level was lowered to Normal, or 1 (on a scale of 1-4).