The Colorado volcano in Alaska is erupting, something that was predicted back in July.  Scientists think the eruptions could get bigger, based on satellite images.

The volcano is on an island (part of the Aleutian Islands) and doesn’t threaten people, but, because it’s thought the volcano’s eruptions could get bigger, it poses a threat to air traffic.

Scientists are so worried about a major eruption that they’ve ruled out flying to the island for closer inspection.

The volcano has frequent minor eruptions.  The last big eruption was in 2001, when the lava flows made it to he ocean.