Cleveland Volcano has exploded for the third time in just over a week.  The latest eruption on Tuesday afternoon was relatively small, according to a release from the Alaska Volcano Observatory.

Scientists at the Observatory weren’t able detect an ash cloud associated with this event or either of the other two.  There’s no real-time monitoring equipment on Cleveland, but distant seismic stations picked up the blast.

None of the recent eruptions have interrupted air travel in the region although the aviation alert level for the volcano remains at orange.  Cleveland’s last major eruption in 2001 sent ash clouds as high as 39,000 feet.

Scientists at the Observatory say they expect Cleveland will continue to erupt periodically, given its recent activity.

The volcano is on uninhabited Chuginadak Island, but residents of the nearby community of Nikolski say they haven’t felt the explosions and haven’t been able to see the volcano because of persistent bad weather in the area.