Semeru Volcano Volcanic Ash Advisory: VA TO FL150 OBS AT 31/2110Z OBS VA DTG: 31/2110Z to 15000 ft (4600 m)

Semeru Volcano Volcanic Ash Advisory: VA TO FL150 OBS AT 31/2110Z OBS VA DTG: 31/2110Z to 15000 ft (4600 m)  Volcano Discovery