Logo link to homepage

Report on Cleveland (United States) — 1 June-7 June 2016

Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 1 June-7 June 2016
Managing Editor: Sally Kuhn Sennert

Please cite this report as:

Global Volcanism Program, 2016. Report on Cleveland (United States). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 1 June-7 June 2016. Smithsonian Institution and US Geological Survey.

Volcano Profile |  Weekly Report (1 June-7 June 2016)


Cleveland

United States

52.825°N, 169.944°W; summit elev. 1730 m

All times are local (unless otherwise noted)


AVO reported that seismic activity at Cleveland had remained low since explosions were detected in infrasound (pressure sensor) and seismic data on 5 and 10 May. No significant activity had been observed since satellite data confirmed the eruption of a small-volume lava dome within the summit crater on 18 May; weakly elevated surface temperatures detected during 2-3 June were consistent with cooling lava. On 3 June AVO lowered the Level of Concern Color Code to Yellow and the Volcano Alert Level was lowered to Advisory.

Geologic Background. The beautifully symmetrical Mount Cleveland stratovolcano is situated at the western end of the uninhabited Chuginadak Island. It lies SE across Carlisle Pass strait from Carlisle volcano and NE across Chuginadak Pass strait from Herbert volcano. Joined to the rest of Chuginadak Island by a low isthmus, Cleveland is the highest of the Islands of the Four Mountains group and is one of the most active of the Aleutian Islands. The native name, Chuginadak, refers to the Aleut goddess of fire, who was thought to reside on the volcano. Numerous large lava flows descend the steep-sided flanks. It is possible that some 18th-to-19th century eruptions attributed to Carlisle should be ascribed to Cleveland (Miller et al., 1998). In 1944 Cleveland produced the only known fatality from an Aleutian eruption. Recent eruptions have been characterized by short-lived explosive ash emissions, at times accompanied by lava fountaining and lava flows down the flanks.

Source: US Geological Survey Alaska Volcano Observatory (AVO)