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The 1989 eruption is also notable for being the first ever volcanic eruption to be successfully predicted by the method of long-period seismic events developed by Swiss/American volcanologist Bernard Chouet. [7] As of August 2015, the Alaska Volcano Observatory has rated Redoubt as Aviation Alert Level Green and Volcano Alert Level Normal. [3]
Alaska's Mount Redoubt volcano began erupting on March 22, 2009, and activity continued for several months. During the eruptions, reports found ash clouds reaching as high as 65,000 feet (20,000 m) above sea level. [1] In response, the National Weather Service issued a series of ash fall advisories.
Incident; Date: 15 December 1989 (): Summary: Quadruple engine failure due to blockage by volcanic ash: Site: Over Redoubt Volcano, Anchorage, Alaska: Aircraft; PH-BFC, the aircraft involved in the incident, seen in 2014.
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This is a list of volcanic eruptions in the 21st century with a volcanic explosivity index (VEI) of 4 or higher, ... Mount Redoubt [63] Alaska, United States 2009 20
Subglacial eruption: 1 water vapor cloud, 2 lake, 3 ice, 4 layers of lava and ash, 5 strata, 6 pillow lava, 7 magma conduit, 8 magma chamber, 9 dike Explosive subglacial eruption of Mount Redoubt, Alaska Subglacial lava dome extrusion at Mount Redoubt, Alaska. Subglacial eruptions, those of ice-covered volcanoes, result in the interaction of ...
Redoubt volcano in eruption. Redoubt is the park's active volcano. 10,197 feet (3,108 m) high, about 10 kilometres (6.2 mi) in diameter and with a volume of about 30 to 35 cubic kilometers, the stratovolcano rises through the Chigmit batholith. It has a 1.8-kilometre (1.1 mi) wide summit crater.
Mount Redoubt [144] Alaska, United States 1989–1990 Second costliest volcanic eruption in United States history. Caused engine failure of all four engines on KLM Flight 867 after it flew through the ash cloud. 3 Nevado del Ruiz [124] Colombia 1985 23,000 Armero tragedy: 3 Mount Etna [103] Italy 1979 9 A sudden phreatic explosion killed 9 ...