I do. It was way worse than Krakatoa.(sp)
Yes it was. A recent cable educational channel special on Thera speculated multiple blasts (as sea water was blasted away, rushed back into the caldera and came in contact with hot magma, and was blasted back out again).
The issue isn't one of scale but timing. The plagues preceed the parting of the sea and logically, the parting of the sea would be an immediate effect of the eruption while the plagues would be a long-term effect after the eruption, which seems backwards. So I'd tend to credit Thera with one or the other -- I favor the plagues since the parting could be explained through simpler mechanisms. Even allowing for garbling of the actual events in the Biblical accounts, it would seem logical that the long term effects (plagues, famine, etc.) come before any exodus from Egypt. The parting of the sea can be explained through other (less powerful) mechanisms.