After several months of quietness, Bulusan erupted again with a powerful phreatomagmatic ash eruption. Philvolcs reports: ...mehr [alles lesen]

Als Andrea Ercolani Berichte von Stromboli, scheint die "normale" strombolianische Aktivität auf den Gipfel Krater seit Anfang Juli zurückkehren.
Nach dem überschwänglichen Ausbruch, der am 4. April endete in diesem Jahr und ein mächtiger vent-Clearing-Explosion am 15. März, gab es tief sitzende Explosionen Auswerfen schwarz Aschewolken seit Mai. Im Juli haben diese beomce regelmäßiger und es scheint, dass das Magma Ebene in die Lüftungsschlitze sind gestiegen und es könnte schon bald sichtbar Lava ejections wieder.
Der Zugriff auf den Gipfel ist immer noch eingeschränkt und Besucher dürfen nur klettern bis zu 400 m Höhe durch eine autorisierte Bergführer, aber es wird das Wetter neue Regeln diskutiert, um den Zugriff auf den Gipfel eingerichtet werden. Dies wird hier so schnell wie es passiert kommuniziert werden. ...mehr [alles lesen]

Based on a Significant Meteorological Information (SIGMET) advisory, the Buenos Aires VAAC reported that an ash plume from Ubinas rose to an altitude of 6.1 km (20,000 ft) a.s.l. and drifted SE on 22 July. Ash was not identified on satellite imagery.

IG reported that during 18-24 July, intermittently visible ash plumes from Tungurahua rose to altitudes of 5.2-8 km (17,100-26,200 ft) a.s.l. and drifted NW, W, and SW. Ashfall was reported from areas SW and W during 19-21 and 24 July. On 20 July, mudflows were reported from drainages to the NW. On 21 July, a steam-and-gas plume drifted W. On 21, 22, and 24 July, ash plumes were occasionally accompanied by roaring sounds, “cannon shots”, or noises that resembled blocks rolling down the flanks.

Data from deformation-monitoring instruments indicated that during 18-24 July lava-dome growth at Mount St. Helens continued. Seismicity persisted at low levels, punctuated by M 1.5-2.5, and occasionally larger, earthquakes. Clouds inhibited visual observations.

MVO reported that during 13-24 July, the lava dome at Soufrière Hills changed very little, based on visual observations. Seismic activity was very low and low-level rockfall activity continued. Heavy rainfall generated lahars in E drainages on 19 July. The Alert Level remained elevated at 4 (on a scale of 0-5).

KVERT reported that seismic activity at Shiveluch continued above background levels during 13-20 July. Based on seismic interpretation, ash plumes rose to an altitude of 6 km (19,700 ft) a.s.l. during the reporting period. Gas-and-steam plumes with some ash rose to altitudes of 3-4.5 km (9,800-14,800 ft) a.s.l. during 11-15 and 18-19 July. Based on satellite imagery, plumes drifted S and SW during 15-16 July and a large thermal anomaly was detected in the crater during 13-20 July. The Level of Concern Color Code remained at Orange.

Based on pilot observations, the Washington VAAC reported that an ash plume from Sangay rose to an altitude of 5.5 km (18,000 ft) a.s.l. and drifted W on 23 July. Ash was not detected on satellite imagery. On 24 July, a diffuse ash plume at an altitude of 5.2 km (17,000 ft) a.s.l. was visible on satellite imagery drifting SW.

Based on pilot reports and satellite image observations, the Buenos Aires VAAC reported that an ash plume from Lascar rose to altitudes of 7.6-9.1 km (25,000-30,000 ft) a.s.l. on 18 July and drifted NE.

KVERT reported that seismic activity at Kliuchevskoi was at background levels during 13-20 July. Based on observations of satellite imagery, ash plumes drifted E on 13 July and a thermal anomaly in the crater was noted during 13-20 July. Ash plumes rose to an altitude of 5.5 km (18,000 ft) a.s.l. and drifted SE and E during 13-15 July, according to video and visual observations. Gas-and-steam plumes were observed on 12, 16, and 18 July.

Seismic activity at Karymsky was above background levels during 13-20 July, with 500-900 shallow earthquakes occurring daily. Based on seismic interpretation, ash plumes may have risen to altitudes as high as 4.5 km (14,800 ft) a.s.l. Ash plumes drifted SE and SW and a thermal anomaly in the crater were visible on satellite imagery during 14-18 July. Plumes rose to estimated altitudes of 4.5 km (14,800 ft) a.s.l. based on atmospheric profiles. The Level of Concern Color Code remained at Orange

18-21 July: The E vent and dominant W vent in Kilauea's Pu'u 'O'o produced lava flows. ...mehr [alles lesen]

17-18 July: The INSIVUMEH reported gas plumes from Fuego that rose to an altitude of 3.9 km .

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The AVO raised the alert level because of  the presence of strong thermal anomaly in the crater. There are also steam-and-gas plumes observed on satellite. Color Code Orange.

On July 21, the activity inside Pu'u 'O'o cone ceased, and a new intrusion made its way to the surface in the area east of the cone and uprift from Kupaianaha shield (active in the 1990s). More news and photographs about this remarkable change in the ongoing eruption can be found at HVO's update pages: http://volcano.wr.usgs.gov/hvostatus.php.

As more news has become available, the news about an effusive flank eruption at Lengai around 15 July turns out to be probably false. The observed "ashcloud" was dust from a landslide. This demonstrates how difficult it is in this area to have robust information. The ongoing seismic activity in the Gregory Rift, however, is quite peculiar.

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After strong earthquakes (6 Richter) a new eruption at the volcano Ol Doinyo Lengai started and lava is flowing at its flanks.  Many villagers have been spending nights in the cold and are terrified after many houses were distroyed by the earthquake.

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Over the past week, the lava lake inside the Puu Oo crater became less and less alimented, dropped several meters inside an 8-shaped system of levees. It remaining active in this smaller area, fed by the eastern vent, but by yesterday, its activity appears to have ended according to information from HVO. Instead, new vents have become active in the western area of the Puu Oo cone.

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Source: HVO

After last week's intense ash eruptions generating plumes 2-3 km high, Gamkonora volcano has quieted down over the past days. Since July 13, seismicity has decreased sharply and no new larger ash eruptions have occurred since then.The Indonesian Volcanological Survey has lowered the alert level and many villagers who had been evacuated from the slopes of the volcano have returned home.

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There are informations about eruptions of the Gamkonora volcano on Halmahera. Strong Strombolian eruptions at the crater, lava is glowing at night. The alert code is on red colour code.
Thousand of people around the volcano flee to safer areas.

Lava continues to erupt from several vents at the bottom of Puu Oo crater. Over the past days, a small lava lake has been forming.

The strong explosive activity at Klyuchevskoy continues. Since June 28, the strongest explosions have been generating ash columns to 10 km high and the resulting ash plume is now forming a band of ash streching as far as Alaska. The ash plume is of major concern for aircraft in the area and air traffic in the area needs to be diverted.

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Activity from Santiaguito continues but is at relatively low levels, generating ash and gas plumes of usually less than 1 km, but at relatively regular intervals of about 20 minutes.

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Mild strombolian activity and the effusion of two small lava flows continue at Pacaya volcano. New small lava flows ca. 150 and 300 m long are present on the upper NE flank, travelling NE and N towards Los Llanos y Cerro Chino.

Strombolian activity at Guatemala's Fire Mountain "Fuego" remains high. INSIVUMEH reports exposions of typically 50-100 m height, although sometimes stronger explosions, such as one on on 1 July throw lava to up to 300 m.A new lava flow, about 250 m long, and headed towards the Río Taniluyá river had started on 27 June from the secondary vent. The older flow, mostly active in March-April, originating from the summit crater, continues slowly as well.

On July 2nd, HVO reported new lava deep on the bottom of Pu‘u ‘Ō‘ō crater, which has subsided by about 100 m in places during the recent drainage eposide associated with a brief eruption higher up the Rift Zone. The first sightings being made by local helicopter companies on their routine sightseing flights over the crater, fresh lava flows probably erupted this morning and covered older flows on the bottom of the crater.
In the afternoon, lava was flowing across the crater floor and the lava source was below the location of the Beehive vent. The lava flowed eastward and ponded near the crater center. Loud, gas-jetting noises could be heard associated with spattering on the crater floor.
The crater is still filled with fume making the new lava difficult to see.
No lava was seen anywhere on the flow field or at the sea entry where it was last seen on June 20. After a similar event in late January, 1997, lava returned to Pu‘u ‘Ō‘ō 23 days later and again flowed towards the ocean a few weeks after that.

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Strong explosive and effusive activity at Klyuchevskoy volcano continues. The activity peaked on 29-30 June when near continuous ash emissios produced ash plumes more than 10 km (or 32,000 ft) high that extended up to 300 km  to the west and south-west. 
KVERT maintains the highest level of alert for Klyuchevskoy.

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