The Redoubt volcano along the Cook inlet in Alaska is showing seismic activity according to the Alaska Volcanic Observatory (AVO). Seismic activity may be a precursor to eruption. Dedicated seismic recorders show frequent bursts of activity on the volcano.  The USGS has a website with advice and information aimed at helping people cope with an ashfall. 

In the past, the prevailing winds have carried the ashfall in an easterly direction over and past Anchorage. According to AVO, Redoubt is a stratovolcano located several hundred km west of Anchorage. It has reportedly erupted explosively six times since 1778, with the most recent being in 1989-90.

Note to Wal-Mart:  You may want to stock up the anchorage stores with extra brooms and shopvacs.