Lava flows on Stromboli’s Sciara del Fuoco and small ash emission this morning (INGV webcams)
Stromboli (Eolian Islands, Italy): There are no signs the effusive eruption is slowing down. A lava flow is being erupted from the vent at 650 m elevation and currently feeds two active branches on the upper Sciara del Fuoco.
Intense degassing and sporadic small explosions occur from the summit vents.
Small ash emission from Etna’s New SE crater
Etna (Sicily, Italy): Occasional explosions from the New SE crater seem to continue. Small ash emissions could be observed on the morning of 22 Oct when clear weather allowed clear views of the crater. Tremor remains low at the moment.
Earthquakes today under Bárdarbunga volcano (IMO)
Bardarbunga (Iceland): The volcanic eruption in Holuhraun continues at similar rate, and has now been going on for more than 50 days.
The erupted lava flow volume approaches 1 cubic kilometers and the lava flows now cover over 63 square km.
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A large lava lake above the central section of the fissure vent has formed and feeds a wide river of lava:
A pink #sunset over the #Holuhraun volcanic eruption in #Iceland, taken from a helicopter: t.co/WiCMD8gOwf pic.twitter.com/ZUQQKLpczy— Iceland Naturally (@IcelandNatural) October 23, 2014
Zhupanovsky (Kamchatka, Russia): KVERT reported that an explosive eruption at Zhupanovsky continued during 10-17 October.
Satellite images detected a thermal anomaly on the volcano during 10-12 October, and ash plumes that rose to an altitude of 9 km (29,500 ft) a.s.l. on 11 October and drifted 411 km NE during 11-12 October. Cloud cover prevented satellite views of the volcano on the other days. The Aviation Color Code remained at Orange. (Smithsonian / USGS Weekly Volcanic Activity Report 15-21 October 2014)
Chirpoi (Kurile Islands, Russia): A thermal anomaly at the volcano was detected on satellite data during 15-16 October.
Ontake-san (Honshu): The volcano continues to produce white steam plumes rising a few 100 m above the crater. According to press articles, 7 people are still missing from the 27 Sep eruption, but search and rescue operations are being suspended until springtime because of the winterly conditions. The Alert Level remained at 3 (on a scale of 1-5).
Sakurajima (Kyushu, Japan): Following a week of relatively low activity, the volcano has become more active again during the past days. A particularly strong vulcanian explosion occurred this morning and produced an ash plume that rose to 15,000 ft (4.5 km) altitude.
Mayon (Luzon Island): PHIVOLCS reported that during 14-21 October white plumes rose from Mayon’s crater and drifted NW, W, WSW, SW, and SE. On 14 October a seismic signal indicating a rockfall was recorded and a brief period of incandescence from the crater was observed.
A few volcanic earthquakes were recorded during 18-21 October. On 19 October weak incandescence from the crater was noted. A new lava flow first observed that same day was 300-400 m long on 20 October based on an aerial survey.
Weak crater incandescence from the lava dome was again seen on 21 October. The Alert Level remained at 3 (on a 0-5 scale). (Smithsonian / USGS Weekly Volcanic Activity Report 15-21 October 2014)
Karangetang (Siau Island, Sangihe Islands, Indonesia): A volcanic ash plume at 10,000 ft (3 km) altitude and extending 40 nautical miles to the NW was repoerted by Darwin VAAC Monday morning based on satellite data. This could suggest a small eruption occurred at the volcano.
The June 27th lava flow crossed Apaʻa Street / Cemetery Road at 3:50 AM, HST, Saturday morning, October 25, 2014. In this photo, which was taken at about 9 AM Saturday, the flow is moving from right to left, with burning asphalt visible along it’s NW margin. A utility pole, far right, was surrounded by lava but remained standing at the time of the photo. The hope is that the protective insulation and cinder/cement barrier around the pole will prevent it from burning through. (image: HVO)
Kilauea (Hawai’i): Lava has crossed the Apaʻa Street / Cemetery Road near the driveway to the Pāhoa cemetery and is now spreading mainly over open grassland.
Between 40 and 50 households could be evacuated within the next few days, as soon as Tuesday, if the lava continues to advance at current rates (approx. 250 m per day) and follows the most likely paths.
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The lava flow front, approx. 70 m wide, is headed northeast and only 1 km straight line distance from Pahoa Village Road,” he said. The best guess of HVO is that the lava might cross Pahoa Village Road a little bit west of the Pahoa Post Office.
The Hawaii Electric Light Company is trying to protect their wooden utility poles by encasing them with concrete, and thus, preventing the lava to burn it, but rather flow around them. So far, one pole engulfed in the lava flows have survived, but as the flows inflate, their fate might be different.
The lava flows have now crossed the Apa’a Street and thus, formally, entered the area of the village of Pahoa.
The lava flow advance accelerated Thursday and has been progressing along 2 lobes with speeds of up to 10 meters per hour.
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The first lava touched the road at around 3:30 am local time this morning, just south of the evacuated Transfer Station (waste plant).
The lava flow continues to advance towards Pahoa and might cut the first road very soon. During an overflight on 22 Oct, the most advanced front of the 27 June flow, a narrow lobe, was only approx. 480 m away from the Apa’a road.
The rate of advance of the flow, now at 21 km distance from its vent, has been highly variable, from an average rate of about 80 m/day during the previous week to rates as high as 300 m/day (330 yd/day) at times from Monday to Wednesday.
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If the advance of the lava continues at current rates, the first lava to touch the Apa’a road could occur within hours or days. A mobile monitoring station was installed to continuously keep track of the progression of the lava.
For the time being, no evacuations are ordered for residents of Pahoa or Kaohe Homesteads, but the Pahoa Recycling and Transfer Station will close on Friday and will be temporarily (or permanently) relocated to an area on Kauhale Road approximately 2 km to the east, where it is thought to be outside the path of potential lava flows following the dominant topographic slope.
Kirishima (Kyushu): The Japan Meteorological Agency issued a “near crater warning” for the Shinmoedake vent of Kirishima volcano last Friday. Increased earthquake activity were detected and mean an increased risk of a possible (probably phreatic) explosions.
Following last months deadly eruption of Ontake-san, news articles about this (routine) event have exploded, focusing on the potential hazards of a volcanic eruption towards the Sendai nuclear power plant, located in the city of Satsumasendai in the Kagoshima Prefecture, approx. 40 km away from the volcano.
While a small to moderate eruption could threaten anybody in the immediate vicinity of the volcano, only an exceptionally large (on a global scale) eruption would likely be a threat to this. At the moment, nothing seems to be pointing towards such a scenario.
Pyroclastic flow on Sinabung on 23 Oct 2014 (VSI webcam)
Sinabung (Sumatra, Indonesia): Pyroclastic flows have decreased in size and frequency, but continued to occur at least until yesterday. Cloudy weather prevents detailed observations most of the time.
Shishaldin (United States, Aleutian Islands): AVO reported that, although cloud cover often obscured views of Shishaldin during 15-21 October, seismicity indicated that a low-level eruption was likely continuing.
Elevated surface temperatures at the summit were periodically detected in cloud-free satellite images. Tremor and ground-coupled airwaves from small explosions were occasionally detected in seismic data. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch. (Smithsonian / USGS Weekly Volcanic Activity Report 15-21 October 2014)
Ash emission from Copahue last evening
Copahue (Chile/Argentina): Although activity has decreased a bit, intense degassing and sporadic small ash emissions as well as crater glow continue at the volcano.
SERNAGEOMIN warns of the possibility of sudden explosions and recommends an exclusion zone of 3 km radius around the volcano’s crater.
Ambrym (Vanuatu): active lava lakes in several craters (updated 14 Aug 2013)
Bagana (Bougainville Island, Papua New Guinea): ash emissions, lava dome growth (updated 24 Sep 2014)
Bardarbunga (Iceland): Ongoing northward migration of seismic activity (updated 18 Sep 2014)
Barren Island (Indian Ocean): intermittent activity, likely strombolian-type and/or lava flows (updated 4 Feb 2014)
Batu Tara (Sunda Islands, Indonesia): strombolian explosions, ash plumes up to 500 m, extrusion of a small lava dome with rockfalls (updated 27 Aug 2014)
Colima (Western Mexico): new lava flow on SW flank (updated 21 Sep 2014)
Dukono (Halmahera): thermal anomaly, probably small explosive activity in summit crater (updated 16 Oct 2014)
Erebus (Antarctica): active lava lake in summit crater (updated 21 Jan 2012)
Erta Ale (Ethiopia): active lava lake in northern pit crater, active hornito with intermittend flow in southern crater (updated 11 Jan 2013)
Fuego (Guatemala): strombolian explosions from summit crater, intermittent lava flows (updated 17 Oct 2014)
Ibu (Halmahera, Indonesia): growing lava dome, occasional ash emissions (updated 16 Oct 2014)
Karymsky (Kamchatka): occasional small explosions, thermal anomaly (updated 4 Oct 2014)
Kilauea (Hawai’i): new lava flow from vents on NE flank of Pu’u ‘O’o (updated 13 Aug 2013)
Manam (Papua New Guinea): degassing, occasional ash venting (updated 28 Aug 2013)
Marapi (Western Sumatra, Indonesia): sporadic explosions (updated 27 Mar 2014)
Nishino-shima (Volcano Islands, Japan): growing island (updated 11 Oct 2014)
Nyiragongo (DRCongo): active lava lake in summit crater (updated 26 Feb 2014)
Ol Doinyo Lengai (Tanzania): effusion of natrocarbonatite lava inside the crater (updated 8 Jul 2013)
Poas (Costa Rica): phreatic explosions (updated 14 Oct 2014)
Rabaul (Tavurvur) (New Britain, Papua New Guinea): lava fountains, ash emissions from Tavurvur cone (updated 12 Sep 2014)
Reventador (Ecuador): ash emissions, explosions (updated 19 Aug 2014)
Sakurajima (Kyushu, Japan): ash venting, intermittent explosions (updated 24 Oct 2014)
Sangeang Api (Indonesia): growing lava dome & lava flow (updated 7 Jul 2014)
Santiaguito (Guatemala): generation of hot lahars (updated 1 Oct 2014)
Semeru (East Java, Indonesia): growing lava dome, lava flow, strombolian activity (updated 21 Sep 2014)
Shiveluch (Kamchatka): growing lava dome, incandescent avalanches, occasional explosions (updated 24 Sep 2014)
Sinabung (Sumatra, Indonesia): continuing pyroclastic flows (updated 24 Oct 2014)
Slamet (Central Java): intense strombolian explosions (updated 13 Sep 2014)
Stromboli (Eolian Islands, Italy): lava flow effusion on Sciara del Fuoco, occasional strombolian explosions (updated 24 Oct 2014)
Suwanose-jima (Ryukyu Islands): strombolian activity in summit crater (updated 10 Sep 2014)
Tungurahua (Ecuador): moderate to strong strombolian explosions from central crater (updated 25 Sep 2014)
Ubinas (Peru): degassing, sporadic small explosions and ash venting (updated 11 Sep 2014)
Yasur (Tanna Island, Vanuatu): ash emissions, weak strombolian explosions (updated 14 Aug 2013)
Zhupanovsky (Kamchatka, Russia): intermittent ash emissions (updated 24 Oct 2014)
More at Volcano Discovery: Volcanoes Today, 26 Oct 2014: Etna volcano, Sinabung, Stromboli, Bardarbunga, Kilauea, Kirishima, Sakurajima