Problem is that even with all the signs visible it's hard to stick a firm date and direction on it. The only thing you can do is inform people to be ready for evacuation on short: notice.
I'm wondering what it's going to take to get people to evac their pets with them, though. Some woman said something about leaving in a panic, and my stomach has been churning ever since I read it.
U.S. Tsunami Warning Centers
The USGS isn't even recording the volcanic earthquakes.