Indonesia's Sinabung Volcano Roars to Life, Erupts Huge Ash CloudMount Sinabung on the Indonesian island of Sumatra shot billowing columns of ash more than 16,400 feet into the atmosphere and hot clouds down its slopes on Monday.
SFO Monitoring Iceland Volcano For Possible Flight DelaysSo far, volcanic ash from an eruption in Iceland over the weekend has yet to interfere with European flights to and from San Francisco International Airport.

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