Kirishima, Kyushu, Japan

Based on reports from JMA, the Tokyo VAAC reported a possible eruption of Kirishima on 22 August. The altitude and direction of a possible resultant plume were not reported.
Source: Tokyo Volcanic Ash Advisory Center (VAAC) – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.”
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Kasatochi, Andreanof Islands, USA

AVO reported that during 20-26 August seismic activity from Kasatochi was detected by stations on Great Sitkin, approximately 40 km W. Clouds prevented satellite image observations. Active fumaroles and hot pyroclastic flow deposits over much of the volcano were observed on 22 August by a visiting scientist. On 23 August, the smell of sulfur was [...]

Soufriére Hills, Montserrat, West Indies

MVO reported that during 15-22 August, evidence suggested that the W side of the Soufrière Hills lava dome continued to grow. Cloud cover prevented visual observations. Rockfalls and long-period seismicity increased. Most of the rockfalls occurred on the W side of the lava dome in a new channel that developed below Gages Wall. Ash plumes [...]

Batu Tara, Komba Island, Indonesia

Scientists on a boat passing Batu Tara about 24 km to the N observed six distinct eruptions of ash plumes from the westernmost area of the summit crater during a 45-minute period on 25 August. The plumes rose to an estimated altitude of 1.1-1.5 km (3,600-5,000 ft) a.s.l. and drifted W.
Source: Tristram Burley, personal communication [...]

Bezymianny, Kamchatka, Russia

KVERT reported that seismic activity at Bezymianny was slightly above background levels during 14 and 16-18 August and at background levels during 15 and 20-21 August. Analysis of satellite imagery revealed a thermal anomaly over the lava dome during 14-15 and 18-21 August. The thermal anomaly enlarged just before an explosion on 19 August. The [...]

Chaitén, Chile

Based on web camera views, pilot observations, and analysis of satellite imagery, the Buenos Aires VAAC reported that during 20-23 and 26 August ash plumes from Chaitén rose to altitudes of 2.1-3 km (7,000-10,000 ft) a.s.l. and drifted SE, E, and NE. A thermal anomaly over the lava dome was detected on satellite imagery during [...]

Chikurachki, Kuril Islands, Russia

KVERT reported that clouds prevented satellite image views of Chikurachki during 15-22 August. The level of seismicity was unknown because Chikurachki lacks dedicated seismic instruments. The Level of Concern Color Code remained at Orange.
Sources: Kamchatkan Volcanic Eruption Response Team (KVERT) – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s [...]

Cleveland, Chuginadak Island

AVO reported that cloud cover prevented satellite observations of Cleveland during 20-26 August, although a possible thermal anomaly was present on 24 August. On 25 August the Volcano Alert Level was lowered to Advisory and the Aviation Color Code to Yellow.
Source: Alaska Volcano Observatory (AVO) – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program [...]

Lalorenza, Colombia

Colombia Reports reported an eruption at Lalorenza yesterday.  No injuries were reported, but several paths and pastures were damaged, according to a Caracol Radio report.  Residents of the zone are being evacuated to protect them from further eruptions by the vol, the radio station reported.  The volcano, Lalorenza, has been inactive for the last five years, [...]

Dukono, Halmahera, Indonesia

Based on analysis of satellite imagery, the Darwin VAAC reported that on 24 August an ash plume from Dukono rose to an altitude of 2.7 km (9,000 ft) a.s.l. and drifted NW. On 26 August, ash plumes rose to an altitude of 1.5 km (5,000 ft) a.s.l. and drifted W and WNW.
Source: Darwin Volcanic Ash [...]