7.2K views · 77 reactions |  JUST IN: Mauna Loa on the Big Island of Hawaii, the largest active volcano in the world, has erupted. This is its first eruption in 38 years. UPDATE: The eruption is not threatening downhill communities or flights to the Island of Hawaii, though up to a quarter inch of ashfall could accumulate on parts of the island as winds may carry fine ash and volcanic gas downwind. | John-Carlos Estrada CBS Austin | Facebook