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Raung in Eastern Java in the Ijen Plateau is one of Java's most active volcanoes, with frequent explosive eruptions every few years. Raung is a massive stratovolcano constructed SW of the rim of the Ijen caldera. Its 3332-m-high, unvegetated summit of Gunung Raung is truncated by a dramatic steep-walled, 2-km-wide caldera where all of the frequent historical eruptions took place. Stratovolcano 3332 m (10,932 ft) East Java, Indonesia, -8.13°S / 114.04°E Current status: normal or dormant (1 out of 5) Raung webcams / live data | ReportsRaung volcano books | Tours
Raung volcano eruptions:1586 (?), 1593 (large sub-plinian eruption), 1597, 1638, 1730, 1804+-4y, 1812-14, 1815 +-1y, 1817, 1838, 1849, 1859, 1860, 1864, 1881, 1885, 1890, 1896, 1897, 1902, 1903, 1913, 1915, 1916, 1917, 1921, 1924, 1924, 1927-28, 1928, 1929, 1933, 1936, 1937, 1938-39, 1940, 1941, 1943, 1944-45, 1953, 1955, 1956, 1971, 1973, 1974, 1975, 1976, 1977, 1978, 1982, 1985, 1987-89, 1990, 1991, 1993, 1994, 1995, 1995 (?), 1997, 1999, Jul 2000, Jun-Aug 2002, Apr-Oct 2004 (?), Jul-Aug 2005 (?), Aug 2007 (?), 2012, 2014-15 Typical eruption style:Explosive Last earthquakes nearbyLatest satellite images   Raung volcano satelite image by (c) Google Earth View
Thu, 27 Aug 2015, 06:46  Evolution of tremor amplitude at Raung volcano (VSI) A few days ago, the official alert level of the volcano has been lowered to 2 (out of 4). It seems that no, or almost no eruptive activity has taken place at the volcano over the past days. ...moreWhat probably was the volcano's most significant eruption in at least 100 years, is probably over. [ less] Tue, 18 Aug 2015, 12:26 It seems that at least some activity has resumed again. Several observers reported a light ash plume rising from the volcano and drifting SW. Mon, 17 Aug 2015, 16:33
With a small group we climbed Raung during 14-15 August 2015. We might have witnessed the end of the large 2015 summit eruption, which during June-early August produced large lava flows, lava fountains and significant ash plumes. Sun, 16 Aug 2015, 10:24  Raung's summit caldera on 14 Aug 2015 Activity has strongly decreased at the volcano. When we visited Raung during 14-15 August, we observed pulsating, often near-continous ash emissions that produced plumes of several hundred meters. They often consisted of dark jets of ash, presumably from phreatomagmatic activity inside the conduit. ...moreThis activity originated from the lower, southwestern vent of the large, double-crater new cinder cone in the eastern part of the caldera. The larger vent to the NE was almost entirely inactive, except two small, very weakly active effusive vents on its inner walls. Occasionally, glowing lava blocks were pushed out from these. The recent lava flow was no longer active. Like a giant pancake, it has completely covered the caldera floor surrounding the large cinder cone. [ less] [ read all]
Wed, 12 Aug 2015, 04:03 Small ash emissions continue. This morning, a plume of ash approx. 500 m high drifted 15 km to the west of the volcano.
Tue, 11 Aug 2015, 10:08  Heat signal from Raung volcano (MIROVA) Activity has decreased at the volcano. During the past days, the ash plume was much lower and only extended several tens of kilometers in southerly directions. ...moreHeat emission remains significant, but has also decreased a lot compared to the previous week. [ less] Sat, 8 Aug 2015, 16:09
 Ash plume from Raung this morning (photo: L.K.Adam / Twitter) Intense ash emissions continue to produce a plume that stretches hundreds of kilometers to the SW. Many flights to and from Bali were canceled or delayed today again. ...moreThe detected heat emission, based on satellite data from NASA's MODIS sensor, remains elevated, although it has decreased significantly during the past days.  Heat signal from Raung volcano (MIROVA) [ less] Fri, 7 Aug 2015, 18:17 
Raung's ash plume yesterday (NASA satellite image) Intense ash emissions and northwesterly winds have repeatedly forced to close Bali's Denpasar International Airport (DPS) during the past days, resulting in many flight cancellations. ...moreThe ash plume, drifting at approx. 5 km altitude, extended over 500 km SE this morning. [ less] Tue, 4 Aug 2015, 16:19  Landsat 8 satellite image of Raung on 27 July. A gray patch left of a forest fire is visible on the NE flank. The eruption at the volcano remains very intense and might have increased during the past days. ...moreAn ash plume of 200 km length has been drifting south today. According to Indonesian press reports, new fissures have been reported (probably on the western flank) and incandescent ejecta were seen to up to a height of 1500 m. Some of them might have landed on the NE flank, where they probably caused a forest fire observed during 20-25 July. [ less] [ read all]
Mon, 3 Aug 2015, 15:50  Heat signal from Raung volcano during the past year (MIROVA) The eruption continues. Ash emissions have decreased, while satellite-detected heat emission increased during the past days. This could suggest that activity is now more effusive (lava flows) than explosive (ash emissions) in style. ...moreThis morning, an ash plume rose approx. 1 km above the volcano and drifted 100 km to the SW. Indonesia's Volcanological Survey VSI mentioned yesterday that seismic activity rapidly decreased. Whether this means a near ending of the eruption remains to be seen. [ less] Show more news
Fri, 31 Jul 2015, 12:05  Satellite image of Raung volcano on 20 July 2015 The attached satellite image from 20 July shows that the whole crater floor has been covered by fresh lava flows. ...moreTue, 28 Jul 2015, 11:05
 Strombolian activity from Raung volcano (26 July 2015, photo: Vianney Tricou) Strombolian activity occurs from two main vents as the submitted photo shows. Tue, 28 Jul 2015, 09:45
 Thermal signal from Raung volcano (MIROVA) The eruption, now over 4 weeks old, continues with no significant changes. Strong lava effusion inside the summit caldera is accompanied by near-constant ash emissions rising 1-2 km and drifting up to 100-200 km in mostly westerly directions. ...morePS: If you are interested in visiting (climbing) the volcano around 11-15 August, please contact us. [ less] Wed, 22 Jul 2015, 14:18  Ash plume from Raung today (BNPB) The eruption of the volcano continues with intense ash emissions and the effusion of lava from vents inside the caldera and shows no signs of weakening. ...moreDepending on the wind direction, the ash plume, approx. at 5 km altitude, drifted several hundred kilometers and has been causing repeated closures of nearby regional airports, most notably Surabaya and Bali. Hundreds of travelers were temporarily stranded as their flights were canceled. 
MODIS heat emission from Raung (MIROVA)  Tremor amplitude of Raung as of 15 July (BNPB) [ less] Tue, 14 Jul 2015, 11:05  Raung's ash plume seen on 12 July from space These satellite images from 11 and 12 July show the ongoing eruption of Raung volcano and its large ash plume, which caused several airports to shut down. 
Satellite view of the lava-filled caldera of Raung on 11 July Fri, 10 Jul 2015, 09:54  Strombolian eruption from Raung volcano The eruption inside the summit caldera continues with intense strombolian activity and the effusion of an intra-crater lava flow. ...moreAsh emissions have been intense enough to produce a plume that rose to 17,000 ft (5 km) altitude and drifted more than 150 km to the SE. Several regional airports including Denpasar (DPS) on Bali have been closed. A recent visit by our friend and volcano expedition organizer Aris Yanto / Exploredesa shows that a new cone has been built inside the crater. [ less] [ read all] Sun, 5 Jul 2015, 10:08 The effusive-explosive activity at the volcano continued and increased over the past week. Strombolian explosions accompany a lava flow emitted from a vent inside the large summit crater. ...moreSome of the explosions were strong enough to produce significant but low-level ash plumes drifting east. Some airlines canceled flights to Surabaya and Bali that would pass near or in the paths of the plumes. The alert level was raised to 3("Siaga") on a scale of 1-4 and some nearby villages have been evacuated. [ less] [ read all] Sun, 28 Jun 2015, 09:44
 Heat signal from Raung volcano during the past year (MIROVA) Eruptive activity continues in the volcano's summit crater. Heat emission remains intense, suggesting the presence of lava (flow?), likely in combination with more or less intense strombolian activity. ...moreAn ash plume was seen on satellite data last Friday. (VAAC Darwin) [ less] Mon, 22 Jun 2015, 11:01 
Thermal signal from Raung volcano (MIROVA) A strong thermal signal visible on satellite data suggests that eruptive activity in the volcano's summit crater has again picked up during the past two days. ...moreDuring late 2014 and early 2015, the volcano had been in strombolian activity and effused a lava flow inside its vast summit caldera. This activity had gradually decreased during the past months, but might now have resumed. [ less] Thu, 4 Jun 2015, 11:05 PVMBG reported that, during infrequent times of clear weather during February-21 May 2014, gray and gray-to-brown plumes were observed rising as high as 300 m above Raung's crater rim. Rumbling was frequently heard at the observation post. Crater incandescence was observed during February and on 12 April. ...moreSeismicity fluctuated and was dominated by tremor. The Alert Level remained at 2 (on a scale of 1-4); residents and tourists were reminded not to approach the craters within a 2-km radius. [ less] Show more newsWed, 18 Mar 2015, 07:32  Strombolian activity in Raung's crater in late Feb 2015 (photo: Andi / VolcanoDiscovery Indonesia) Strombolian activity continues from the vents inside the summit caldera of the volcano. Raung's alert level of the volcano was raised to 2 (on a scale of 1-4) a week ago. ...moreAn increasing number of volcanic-tectonic earthquakes had been detected. These quakes are indicators of rock breaking at depth, which can be caused by pressurized fluids, such as magma, intruding into the system.  Number of recorded volcanic-tectonic earthquakes at Raung (VSI) [ less] Sun, 1 Mar 2015, 11:38  Beautiful incandescent trails of a large explosion during the night - photograph taken by Andi Our local Indonesian partner, photographer and volcanologist Andi, spent a week at Raung to observe the volcano´s current explosive eruption. ...moreOn the 25th of February 2015, Andi reported us the following:  Large Strombolian explosion/jet spewing lava from the dome's vent, the sound accompanying this activity is just like an exploding bomb - photograph taken by Andi  Lava overflow in the crater after a series of large explosive eruptions - photograph taken by Andi [ less] [ read all] Fri, 9 Jan 2015, 12:05  Strombolian activity from a new vent inside Raung's summit caldera (image: Sofya Klimova) Sofya Klimova from a team exploring Indonesian volcanoes by canoe climbed Raung volcano on 6 Jan and sent us the following report / pictures: ...more"Inside the crater explosions occur with the release of a small amount of ash and volcanic material, but a lot of gas. Periodicity was approximately 40 minutes. From the crater continuously extruded lava. At night shots can be seen that it retains heat."  The new lava flow inside Raung's summit caldera (image: Sofya Klimova) [ less]
More on VolcanoDiscovery:
 Eyjafjallajökull volcano photos: The volcano in Iceland with the unpronounceable name... but famous in 2010 when its ash clouds drifted over Europe and forced a unprecedented large-scale airspace closure for several days, stranding millions of passengers.  Stromboli volcano photos: The lighthouse of the Thyrrhenian Sea - thanks to its typical, regular explosions that coined the term "strombolian activity", Stromboli is one of the most famous and photogenic volcanoes in the world.  Batu Tara photos: A remote island in the Flores Sea of Indonesia formed by a single volcano that has been in strong strombolian eruption for years. We regularly lead expeditions to there where we camp several days to observe it. |
