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Alaska Volcano Observatory
USGS Monitoring Several U.S. Volcanoes For Eruptions; WATCH/ORANGE in Effect
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USGS Monitoring Seismic Swarm at Cleveland; Volcanic Eruption Possible
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USGS Maintains Alert Level at Newly Erupting Volcano
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USGS Increases Volcano Alert Level Due to Increased Earthquake Activity
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USGS Scientists Say Volcanic Unrest at Cleveland Continues
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Explosion at Volcano Prompts USGS To Raise Color Code to ORANGE / Alert Level to WATCH
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Volcanic Alert Level Raised by USGS; Cleveland Could Erupt
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Stratovolcano Shows Signs of Life as Alaska Cruise Season Begins
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Alert Level Raised on Another U.S. Volcano, the 4th in the Last 7 Days
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USGS Changes Volcano Alert Level Today
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USGS Raises Alert Level for Volcano: ORANGE / WATCH
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Volcanoes Roar to Life Around the Globe
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USGS Raises Volcano Alert Level
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