An Alaskan volcano that has erupted several times since last
year spewed an ash cloud up to 30,000 feet, leading to an
The Bogoslof volcano erupted Saturday, sending ash over the
Aleutians Islands, the Alaska Volcano Observatory (AVO) said.
It “remains at a heightened state of unrest and in an
unpredictable condition, and additional explosions producing
high-altitude volcanic clouds could occur at any time,” the
The volcano sits under the flight path of many flights from Asia
to North America and its ash cloud could adversely affect
“Ash and aircraft do not mix, as volcanic ash is abrasive, melts
at jet engine temperatures, and can cause engine failure,” the
United States Geological Survey says.
The aviation color code remains at red.
Bogoslof’s current eruption sequence started in December,
according to the observatory. Its previous eruption events have
lasted weeks, sometimes months.
In May, an eruption prompted a similar temporary aviation alert
but was subsequently downgraded to “orange.”
Aircraft are often instructed to fly around or over ash clouds,
although in some circumstances air traffic has been grounded due
to the hazards from airborne ash. In 2010 the eruption of the
Eyjafjallajokull volcano in Iceland caused the cancellation of
flights around Europe for six days.