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Wed, 31 Oct 2007, 21:36
Wed, 31 Oct 2007, 08:51
The central crater vent of Stromboli in eruption (23 Oct 07)
During the recent tour "From Stromboli to Etna" we observed mild to moderate explosions from Stromboli volcano. The most active vent appears to be in the former central crater, with powerful explosions throwing glowing material up to 200m elevation above the crater and often outside on the N and NE flanks. Other vents in the eastern and western part of the crater erupt occasionally with loud bangs and loud hissing noises produced by strong gas jets.
- More about Stromboli volcano
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Tue, 30 Oct 2007, 15:02
Photo by Thomas Holden
- More about Ol Doinyo Lengai volcano
Thu, 18 Oct 2007, 15:56
The Alert Level at Ruapehu was lowered to 1 (on a scale of 0-5) on 9 October because no further eruptions have occurred since the activity on 25 September.Thu, 18 Oct 2007, 15:52
Infrequent, mostly small ash eruptions continue at Reventarod volcano. On 11 October, the volcano produced an ash plume that rose to an altitude of 4.6 km (15,000 ft) a.s.l. and drifted S.- More about Reventador volcano
Thu, 18 Oct 2007, 15:47
Fuego volcano continues its moderate strombolian activity; INSIVUMEH reported frequent explosions such as on 10 October that produce ash plumes rising to to altitudes of 4-5 km (13,000-16,400 ft) a.s.l. and mostly drifiting N and NW. The explosions are often accompanied by rumbling noises and jet-engine like sounds. Avalanches of collapsing spatter from the growing cone in the inner crater descend W into the Taniluyá and Santa Teresa ravines.
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Source: INSIVUMEH
- More about Fuego volcano
Thu, 18 Oct 2007, 15:33
The Center of Volcanology and Geological Hazard Mitigation (CVGHM) raised the altert status of Kelut volcano on 16 October from 3 to 4 (on a scale of 1-4). During 15-28 September, gas discharge from the crater lake increased and spread in a radius of 5 m. Inflation around the summit occurred during 13-16 October. On 16 October, the temperature in the crater lake increased to 37.8 degrees C.
Read all- More about Kelud volcano
Thu, 27 Sep 2007, 19:51
Pilots reported ash plumes that rose to an altitude of of 5.5-6.4 km on 12 and 20 September.Thu, 27 Sep 2007, 19:49
IG reported that ash and steam-and-ash plumes from Tungurahua rose toaltitudes of 5.3-7 km during 19-20 and 22-24
September.
- More about Tungurahua volcano
Thu, 27 Sep 2007, 19:48
From 19-25 September lava-dome growth at Mount St. Helens continued.Show more
Thu, 27 Sep 2007, 19:44
Montserrat Volcano Observatory reported that during 19-25 September the lava dome at Soufrière Hills changed only very little. Seismic activity was very low and low-level rockfall activity continued.Thu, 27 Sep 2007, 19:42
A pilot reported a ash plume that rose up to 7 km on 22 September but there wasn´t ash detected on satellite images.- More about Semeru volcano
Thu, 27 Sep 2007, 19:39
Rabaul Volcano Observatory reported that there were ash plumes from Rabaul caldera's Tavurvur cone. They rose to an altitude of 1.2 km on 20September.
Thu, 27 Sep 2007, 19:29
During 19-23 September, steam and steam-and-ash plumes from Colimarose to altitudes of 4-4.9 km (13,100-16,100 ft) a.s.l. and drifted
SW, W, and SE.
- More about Colima volcano
Thu, 27 Sep 2007, 19:26
AVO increased the Volcanic Alert Level to Advisory and the Aviation Color Code to Yellow for Augustine on 22 September due to an increase in seismic activity below the summit over the previous week. Read all- More about Augustine volcano
Thu, 27 Sep 2007, 19:23
There have been observations of pyroclastic flows that traveled W of Arenal on September 18. Aslo ahs was produced and avalanches have been reported.Thu, 27 Sep 2007, 00:15
KVERT reported that seismic activity at Shiveluch was above backgroundlevels during 7-14 September. During 6-9 September, avalanches
occurred and ash plumes rose to altitudes of 4-6.5 km (13,100-21,300
ft) a.s.l. Observations of video data indicated that ash plumes rose
to an altitude of 4.5 km (14,800 ft) a.s.l. on 7 September.
Gas-and-steam plumes were noted on 7, 10, and 11 September. A thermal
anomaly was present in the crater on satellite imagery during the
reporting period. The Level of Concern Color Code remained at Orange
- More about Shiveluch volcano
Thu, 27 Sep 2007, 00:12
White vapor plumes rose from Rabaul caldera's Tavurvur cone from 10-18 September. On 16, 18, and 19 September, occasional ash plumes rose to an altitude of .9 km and drifted W or NW. Slight ashfall was reported in areas around.Thu, 27 Sep 2007, 00:08
AVO reported that seismic activity at Pavlof declined markedly during8-18 September, compared to levels recorded during the first week of
September. Seismicity was characterized by volcanic tremor, and
signals interpreted as small explosions. Based on observations of
satellite imagery, a steam plume rose to an altitude of 6.1 km (20,000
ft) a.s.l. on 12 September and multiple thermal anomalies were present
during 12-14 September. The Volcanic Alert Level remained at Watch and
the Aviation Color Code remained at Orange
Thu, 27 Sep 2007, 00:06
Based on observations of satellite imagery, the Darwin VAAC reportedthat ash plumes from Manam rose to an altitude of 3.7 km (12,000 ft)
a.s.l. on 17 September and drifted W.
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Thu, 27 Sep 2007, 00:04
HVO reported that during 12-18 September fissure segment D fromKilauea's 21 July fissure eruption continued to feed an advancing 'a'a
lava flow that frequently overflowed its channel edges. Several of the
lava flows that branched from the main channel continued to advance,
widening the flow field. An 'a'a flow that developed within the
previous two weeks crusted over and pahoehoe breakouts issued from
near the flow front on 14 September. A few small earthquakes were
located beneath Halema'uma'u crater, the S flank, and the lower SW
rift zone during the reporting period.
Fri, 14 Sep 2007, 08:53
Tungurahua volcano continues to erupt. Although still considerable, the intensity of activity has been showing a decreasing trend in the past weeks and months. Intermittend explosions produced plumes rising to altitudes of 5.3-8 km (17,400-26,200 ft) a.s.l. during 5-6 and 9-10 September.
Read all- More about Tungurahua volcano
Fri, 14 Sep 2007, 08:50
No significant changes have been registered at Mt. St. Helens. CVO's instruments monitoring the volcano indicate that the lava dome continues be active and grow slowly.Fri, 14 Sep 2007, 08:45
Activity at Pavlov volcano continues at fluctuating levels. Judging from seismic data and visual observations - often difficult because of cloud cover -, frequent weak explosions and rockfalls are taking place and a strong thermal anomaly continues to be visible in the summit area on satellite data, indicating that the new lava dome is still growing.- More about Pavlof volcano
Fri, 14 Sep 2007, 08:41
The Alaska Volcano Observatory lowered the alert level at Cleveland volcano from Orange to Yellow on 6 Sep. Since late July, no signs of eruptive activity have been registred.
- More about Cleveland volcano
Thu, 13 Sep 2007, 06:08
Laguna Caliente, the frequently visited summit lake of Poás volcano, exhibits signs that increased fumarolic activity is happening at the bottom of the lake: now greenish-gray in color, convection cells in the lake's center and dark gray floating particles are being noted.
Read all- More about Poas volcano
Thu, 13 Sep 2007, 05:58
Unrest at Turrialba volcano continues. Increased fumarolic activity had started in August 2006 and is concentrated mainly to the W of Turrialba's central crater.
Read all- More about Turrialba volcano
Thu, 13 Sep 2007, 05:51
Arenal volcano continues to be mildly active. Over the past weeks, activity at crater C consisted of gas emissions, sporadic Strombolian eruptions, lava flows traveling down the SW and S flanks, and occasional avalanches from lava-flow fronts. Blocks from the lava-flow fronts periodically reached vegetation and started small fires. Acid rain and small amounts of ejected pyroclastic material affected the NE and SE flanks. Eruptions produced ash plumes that rose about 2.2 km (7,100 ft) a.s.l. Pyroclastic cones on the NE and SW flanks continued to grow. Small avalanches of volcanic material traveled down several ravines. Crater D showed only fumarolic activity. Read all- More about Arenal volcano
Tue, 11 Sep 2007, 08:17
As more evidence about the large eruption at Lengai volcano on 4-5 Sep is pieced together, it appears that the eruption was probably a mainly explosive event while evidence of significant lava flows on the flanks becomes less. The observed "lava flows" could have been bush fires ignited by hot ejecta. In any case, there is little doubt that the observed ash cloud was the result of a significant explosive eruption and not just landslides on the steep flank.
Read all- More about Ol Doinyo Lengai volcano
Thu, 6 Sep 2007, 18:39
It seems that the eruption at Lengai is indeed a major event and that explosive activity has taken or is taking place in addition to lava flows and probably, bush fires. According to local sources from the nearby Moivaro - Lake Natron Camp, Lengai first erupted at midnight and at 6 am on 4 September. A pilot reported ash rising to 20,000 ft (ca. 6 km). Ashfall was reported from Engaresero Village, but there are no reports on injuries or fatalities. The highly regarded Moivaro Tented Lodge near Lake Natron has been temporarily evacuated.
Read all- More about Ol Doinyo Lengai volcano
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Thu, 6 Sep 2007, 11:47
Satellite image of the eruption at Lengai volcano (image: NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team)
A large eruption seems to be taking place at Lengai volcano, this time for real: On 4 Sept., reports started coming in that a large (natrocarbonatite?) lava flow is descending the West flank. A considerable ash plume was visible on satellite data.
Read all- More about Ol Doinyo Lengai volcano
Wed, 5 Sep 2007, 08:08
Etna is back to its glory once more.
Read all- More about Etna volcano
Mon, 3 Sep 2007, 13:51
Etna's SE crater, the youngest and in recent years most active of its 4 summit vents, is increasing its activity. Since the ash emissions started in mid August, weak strombolian activity has been increasing gradually. The first incanescent ejecta were observed by INGV on 21 August. Over the past week, strombolian activity has become more and more common. On 31 August, an overflight confirmed that a new cinder cone is now growing within the depression in the eastern flank of the SEC.
- More about Etna volcano
Sat, 1 Sep 2007, 17:03
Pavlov's eruption continues and it seems increasing. A strong eruption took place yesterday: at approximately 9:30 pm local time (AKDT) on August 31, National Weather Service observers in Cold Bay reported a substantial plume and associated lightning emanating from Pavlof Volcano reaching approximately 20,000 ft (6,000 m) above sea level.If activity continues to increase in intensity, larger ash clouds that could affect higher-flying aircraft may be produced. The most immediate ground hazard in the vicinity of the volcano includes light ash fall on nearby communities.
- More about Pavlof volcano
