Bogoslof volcano (Aleutian Islands): short but violent explosive eruption reported
Wed, 21 Dec 2016, 17:59 | BY: T
Ash plume from Bogoslof volcano on satellite imagery (image: NOAA/CIMSS)
According to this data, an ash column rose to approx. 10 km altitude and quickly dissipated to the south.
There is no monitoring of the volcano on the remote island itself and not much is known about its activity and typical behavior. There are no details available about the nature of today's event. So far, no new ash plumes have become visible, which could mean that the explosion was an isolated event.
The last known eruption of Bogoslof volcano was in 1992 near the northern shore of the small island. A vent breached the sea surface producing surtseyan activity before building a new lava dome that eventually reached about 150 m height. Similar events had also occurred in 1927 and 1786, but only small remnants of the edifices produced by those earlier eruptions have survived the erosive action of the arctic ocean.
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Previous news
Wed, 21 Dec 2016, 06:00
Bogoslof volcano (Fox Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 21 December-27 December 2016 (New Activity / Unrest)
AVO reported that the explosive eruption at Bogoslof, which was reported by several pilots around 1530 on 20 December and produced an ash plume that rose to 10.3 km (34,000 ft) a.s.l., lasted about 30 minutes. The ash plume detached and dispersed S. AVO had raised the Aviation Color Code (ACC) to Red and the Volcano Alert Level (VAL) to Warning, but since no further activity was detected or observed the ACC was lowered to Orange and the VAL was lowered to Watch. ... Read all
Wed, 21 Dec 2016, 02:30
Bogoslof volcano Volcanic Ash Advisory: ERUPTION TIME EST 0100Z. ERUPTION DOES NOT APPEAR TO BE CONTINUOUS AND VA REPORTED AS DSIPT.
Wed, 14 Dec 2016, 06:00
Bogoslof volcano (Fox Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 14 December-20 December 2016 (New Activity / Unrest)
AVO reported that a short-lived explosive eruption at Bogoslof, observed and reported by several pilots around 1600 on 20 December, produced an ash plume that rose to 10.3 km (34,000 ft) a.s.l. A subsequent pilot report made 50 minutes later indicated that activity had decreased. Satellite data showed a discrete, short-lived explosion just prior to 1600, and a detached plume that drifted S. ... Read all