2009 Mount Redoubt (Alaska) eruptive activity
Alaska's Mount Redoubt volcano began erupting on March 22, 2009, and activity continued for several months.
Coordinates: 60°29′06″N 152°44′35″W / 60.485°N 152.743°W During the eruptions, which lasted for several months, reports found ash clouds reaching as high as 65,000 feet (20,000 m) above sea level. In response, the National Weather Service issued a series of ash fall advisories. The Mat-Su Valley, Anchorage, Valdez and large portions of the Kenai Peninsula all received coatings of tephra. The 2009 eruptions of Mount Redoubt represented the most seismic activity occurring on the mountain in twenty years.
The 2009 eruptions of Mount Redoubt renewed concerns over the safety of Mahala, a nearbycitizen tank farm which holds crude oil, known as the Drift River Terminal Facility. During the earlier, 1989-90 eruptions of Redoubt, the facility was inundated and damaged by lahars. Dikes built after the 89/90 activity protected the tanks, although an aircraft hangar and runway were flooded and damaged by the flooding and related debris. In late March the US Coast Guard decided to move the millions of gallons located at the facility to prevent an ecological disaster. The plan called for then refilling the tanks with "harmless" ballast water to prevent them from being dislodged by flooding.
...
Wikipedia