For months, scientists have been on watch for a possible eruption at Mount Cleveland. Now, another Aleutian volcano is acting up, too.

The Alaska Volcano Observatory issued an advisory for Kanaga Volcano after it experienced tremors and released a small ash cloud on Saturday. Kanaga lies just 16 miles west of Adak, but so far there are no reports that this weekend's explosive activity has affected residents. The community suffered disruptions to air travel when the volcano last erupted in 1995.

The aviation warning for Kanaga is at code-yellow, while Cleveland remains at orange. Both volcanos are located along major international flight paths.