The Alaska Volcano Observatory has lowered the alert level for Mount Redoubt, the volcano that disrupted air traffic and sent mud flows toward an oil terminal earlier this year.

Seismic, satellite and gas observations over the past few weeks indicate that growth of a lava dome at has significantly slowed and
may have stopped.

The observatory says it's possible that eruptive activity has ended.

However, scientists say the large mass of fresh lava may be unstable and could fail with little or no warning, leading to significant ash production and possible mud flows in the Drift River Valley, where an oil terminal was threatened.

Redoubt's last significant eruption was April 4.

The volcano is 106 miles southwest of Anchorage.