A massive 7.2 magnitude earthquake has increased the risk of a volcano in Alaska erupting imminently as the aviation level was raised to red. The Shishaldin Volcano has been spewing great plumes of ash into the air since July 11, according to the Alaska Volcano Observatory (AVO). A US Coast Guard overflight confirmed lava erupted the same day within the summit crater. The latest data from the AVO, as of just before midnight on July 15, showed frequent explosion signals are being detected, with some explosions sending plumes of ash as high as 20,000 ft above sea level.