MattsMom, has your husband found the CVO website? I can easily kill an afternoon reading and looking at pictures.
We have had no tremors here in Vancouver or at my cousin's place 30 miles closer to MSH.
For the most part all of seismic activity has been shallow, of low intensity and centered directly below the dome.
The U of W and USGS maintain 7 Webicorders on and around the mountain (and several mountains). http://www.pnsn.org/WEBICORDER/VOLC/welcome.html
Intellectually I know that May 18, 1980 was an unusual set of circumstances that no longer exist but I have a little PTSD left over from it that has flared a bit in the last 6 months. I cope with the whole think by spending a LOT of time looking at the seismisity and watching trends.
This is a link to the 2004-2005 activity in cronological order. http://vulcan.wr.usgs.gov/Volcanoes/...framework.html
And this is a really cool link to a Windows Media Player file of almost daily pictures taken of the dome taken by a fixed position camera. Pay extra attention to the area just left of center. http://vulcan.wr.usgs.gov/Imgs/Video...u_02-25-05.wmv