Planes could be grounded and flights affected after a monster volcano sent a giant ash cloud into the skies – sparking the highest ever threat warnings. Officials have been forced to raise the volcano and aviation alert levels after the Pavlof Volcano ash spewed 30,000 feet into the air.

The volcano on Alaska’s Aleutian Islands erupted with such strength “high-level” tremors could be felt hundreds of miles away.There is also a risk small avalanches of hot rock could possibly cause mudslides, Alaska Volcano Observatory geophysicist David Schneider said. The volcano alert level is now on “warning” and the aviation level is “red” – both their respective highest threat levels. READ MORE