Latest U.S. Volcano Alerts and Updates for Friday, Aug 7, 2009 at 18:23:00 PDT
- 2009-08-07 19:59:50 Redoubt Advisory Yellow
- 2009-08-07 19:59:50 Shishaldin Advisory Yellow
- 2009-08-07 18:40:28 Cascade Range Normal Green
- 2009-08-07 16:50:13 Kilauea Watch Orange
- 2009-08-07 16:13:29 Long Valley Volcanic Center Normal Green
- 2009-08-06 23:12:41 Anatahan Normal Green
- 2009-08-03 21:54:38 Yellowstone Normal Green
- 2009-07-27 21:13:33 Mauna Loa Advisory Yellow
- 2009-07-17 20:49:16 Cleveland Unassigned Unassigned
Did you know there are 169 active volcanoes in the United States? Learn more about how and why we monitor volcanoes.
Features
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Information about Activity at Redoubt Volcano
On June 30 AVO lowered the Aviation Color Code and Volcano Alert Level to Yellow and Advisory at Redoubt volcano based on a significant decrease in the rate of lava extrusion. Between March 22nd and April 4th 2009, Redoubt produced multiple significant explosions that sent ash and gas clouds to as high as 65,000 feet (19.8 km) above sea level and significantly disrupted air traffic. After April 4th, the eruption continued with extrusion of a lava dome within the summit crater, eventually producing a blocky lava flow down the north flank of the volcano. For the most up-to-date information, please see the Redoubt Activity Page.
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This Dynamic Planet: A Teaching Companion
Access classroom exercises and background information on plate tectonics.
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VHP Update Feeds
Access our updates from a news reader.
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Volcanic Ash Information
Volcanic Ash information including guidance for homes, businesses, and communities.
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View our Web Cams
See real-time images of several U.S. volcanoes.
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Features Archive …
