Monthly Archives: August 2008

Okmok, Fox Islands, USA

AVO reported that seismic activity at Okmok decreased on 19 August to near pre-eruption levels and remained low during 20-24 August. Occasional bursts of volcanic tremor were detected. Although satellite views were hindered due to cloud cover, a possible thermal … Continue reading

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Pacaya, Guatemala

INSIVUMEH reported that during 21-26 August, fumarolic plumes from Pacaya’s MacKenney cone rose to an altitude of 3.2 km (10,500 ft) a.s.l. and drifted W and SW. Incandescence from the crater was occasionally seen at night. Lava flows on the … Continue reading

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Rabaul, Papua New Guinea

RVO reported that ash plumes from Rabaul caldera’s Tavurvur cone continued to be emitted during 18-22 August, although less so than during 16-18 August. Some prolonged ash-free intervals were immediately followed by explosions that produced ash plumes. The plumes drifted … Continue reading

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Sakura-Jima, Japan

Based on information from JMA, the Tokyo VAAC reported an explosion from Sakura-jima on 23 August. The altitude and direction of a possible resultant plume were not reported. Source: Tokyo Volcanic Ash Advisory Center (VAAC) – “Reports provided courtesy of … Continue reading

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Santa María, Guatemala

INSIVUMEH reported that during 21-26 August explosions from Caliente, a unit of Santa María’s Santiaguito lava dome complex, produced ash plumes that rose to altitudes of 2.8-3.3 km (9,200-10,800 ft) a.s.l. and drifted S, SW, and W. Constant degassing was … Continue reading

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Semeru, Eastern Java, Indonesia

Based on pilot reports and observations of satellite imagery, the Darwin VAAC reported that during 21-22 August ash plumes from Semeru rose to an altitude of 3.7 km (12,000 ft) a.s.l. and drifted W. Sources: Darwin Volcanic Ash Advisory Centre … Continue reading

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Shiveluch, Russia

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 15-22 August. Analysis of satellite imagery revealed a thermal anomaly on the lava dome on 15, 18, and 21 August. The Level of Concern Color Code remained … Continue reading

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