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Monthly Archives: April 2008
Ubinas, Peru
Based on pilot reports, SIGMET reports, and observations of satellite imagery, the Buenos Aires VAAC reported that ash plumes from Ubinas rose to altitudes of 5.5-7.6 km (18,000-25,000 ft) a.s.l. and drifted ESE and NE during 19-22 April. Source: Buenos … Continue reading
Tungurahua, Ecuador
The IG reported that although visual observations were mostly limited due to cloud cover during 16-22 April, ash-and-steam plumes from Tungurahua were spotted on 16, 20, and 21 April and rose to altitudes of 6-8 km (19,700-26,200 ft) a.s.l. Strombolian … Continue reading
Suwanose-Jima, Ryukyu Islands, Japan
Based on information from JMA, the Tokyo VAAC reported that an explosion from Suwanose-jima occurred on 16 April. The altitude and direction of a possible resultant plume were not reported. Source: Tokyo Volcanic Ash Advisory Center (VAAC) – “Reports provided … Continue reading
Soufriére Hills, Montserrat, West Indies
MVO reported that during 4-18 April the lava dome at Soufrière Hills changed very little, based on measurable parameters. Overflights on 9 and 16 April revealed that the E side of the lava dome continued to erode and exposed more … Continue reading
Semeru, Eastern Java, Indonesia
Based on pilot observations, the Darwin VAAC reported that a plume from Semeru rose vertically to an altitude of 6.1 km (20,000 ft) a.s.l. on 21 April. Source: Darwin Volcanic Ash Advisory Centre (VAAC) – “Reports provided courtesy of the … Continue reading
Santa María, Guatemala
INSIVUMEH reported explosions from Santa María’s Santiaguito lava dome complex during 15-21 April. Resultant ash plumes rose to altitudes of 4.1-4.7 km (13,500-15,400 ft) a.s.l. and drifted SW. Constant avalanches on the W and S flanks were noted. Based on … Continue reading
Sakura-Jima, Japan
Based on pilot reports and observations of satellite imagery, the Tokyo VAAC reported that an ash plume from Sakura-jima rose to an altitude of 4.6 km (15,000 ft) a.s.l. and drifted 100 km E on 19 April. The next day, … Continue reading
Rabaul, Papua New Guinea
During 18-19 April, the Darwin VAAC reported that low-level ash-and-steam plumes from Rabaul were observed on satellite imagery drifting ESE. According to the VAAC, RVO advised that ash eruptions continued and rocks were expelled during explosions. RVO reported several explosions … Continue reading
Kilauea, Hawaii, USA
Based on observations during helicopter overflights, visual observations from HVO and National Park Service (NPS) crews, and web camera views, HVO reported that during 16-22 April lava flowed SE through a lava tube system underneath Kilauea’s Thanksgiving Eve Breakout (TEB) … Continue reading
Karymsky, Russia
KVERT reported that seismic activity at Karymsky was above background levels during 11-18 April. Based on seismic interpretation, weak ash-and-gas explosions or hot avalanches may have occurred daily during 10-14. Observations of satellite imagery revealed that a thermal anomaly was … Continue reading