Highest Aviation Alert Level Issued After Alaskan Volcano Erupts (Download PDF)


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Alaska Volcano Observatory (AVO) announced an Alaska volcano erupted at 2: 16 p. m. on 28th may which has been active six months ago and it results cloud of ash up to 35, 000 feet high. It is located at Bogoslof Island of Alaska which is part of the Aleutian island chain.

Highest aviation alert level issued after AVO

Highest Aviation Alert Level Issued After AVO

Highest aviation alert level issued after AVO

  • The eruption was for about 55 minutes with which resulted “red” aviation alert and it was declared within half hour of event because of lightning and seismic data.
  • Many flight have path under volcano sits which are fling from Asia to North America and this ash cloud could adversely affect aircraft so the air traffic was stuck due to it.

Key facts:

  • AVO scientists has taken photo nearby Unalaska Island after 14 minutes the eruption started which shows a large white-gray mushroom cloud form over the site. The Ash fallout was going to the west of the site.
  • Till the date eight eruption events documented at Bogoslof and the last one was in 1992. Preceding eruption events have lasted weeks to months and this current eruption sequence was started in December 2016.
  • Previous volcanic activity has significantly changed the shape and coastline of the island, the land mass also goes tripled in size between 2015 and 2016.

About Alaska Volcano Observatory (AVO)

  • The United States Geological Survey, the Geophysical Institute of the University of Alaska Fairbanks, and the State of Alaska Division of Geological and Geophysical Surveys (ADGGS) jointly run AVO.
  • It was formed in 1988.
  • Its main function is to monitor and study Alaska’s volcanology, hazardous volcanoes, to predict and record eruptive activity, and to mitigate volcanic hazards to life and property using federal, state, and university resources.
  • Currently AVO monitors more than 20 volcanoes in Cook Inlet nearer to Alaskan population centers, and the Aleutian Arc due to the hazard that plumes of ash pose to aviation.

- Published/Last Modified on: June 5, 2017


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