ANCHORAGE - The swarm of small shallow earthquakes that began April 5 at the Redoubt volcano has ended, and the shaking returned to background levels.
The Alaska Volcano Observatory lowered the aviation code Monday from yellow to green.
Eruptions from the 10,197-foot volcano early last year disrupted air travel, dusted Anchorage with ash and sent a mudflow that partially flooded the Drift River Oil Terminal.
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