Ol Doinyo Lengai volcano (Tanzania) - Smithsonian / USGS Weekly Volcanic Activity Report for 24 October-30 October 2007 (New Activity / Unrest)
Based on pilot observations, the Toulouse VAAC reported that ash plumes from Ol Doinyo Lengai rose to altitudes of 3.2-4.6 km (10,500-15,000 ft) a.s.l. on 23 October. According to Frederick Belton's Ol Doinyo Lengai website, a pilot photographed an ash column rising vertically from the summit on approximately 25 October.
Wed, 24 Oct 2007, 06:0006:00 AM | BY: VN
Sources: Toulouse Volcanic Ash Advisory Centre (VAAC), Ol Doinyo Lengai (Fred Belton)
From: Global Volcanism Program, 2007. Report on Ol Doinyo Lengai. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 24 October-30 October 2007. Smithsonian Institution and US Geological Survey.
Tue, 11 Sep 2007, 08:17
Ol Doinyo Lengai volcano (Tanzania), activity update: volcano calming down, further investigations under way
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
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