Follow the latest by visiting the Alaska Volcano Observatory.
You can take a look at Mt. Redoubt on two webcams setup by the AVO.
Mt. Redoubt is located 110 miles southwest of Anchorage, Alaska.
According to Wikipedia, Mt. Redoubt erupted in 1902, 1966, and 1989. The eruption in 1989 threw volcanic ash to a height of 45,000 feet.