I thought you'd catch that. Remember the tree rings and ice cores recorded a world wide disaster in 1628BC (Same time as the Exodus from Egypt, ahem)
Yep, about the same time. I wonder if that's the same time the Sahara dried up.
AHEM yourownself, Blam. Works for me as a pretty good time for the Israelite bailout by sea from Egypt for the "proto-Celts", prior to the later and larger exodus by land for the rest of the Israelites. But regardless how you pencil it, that date doesn't work for the main exodus.
I thought there was a great deal of controversy both about whether the Exodus happened at all, and, if it did, about its date. But, in any case, isn't 1628 BC a rather early date? Here's what the Oxford Companion to the Bible has to say:
Unfortunately, there is no way to locate this admittedly loose chronological sequence with any precision, either in an Egyptian setting or in a wilderness setting. A wide variety of dates has been suggested, from the first half of the fifteenth century BCE to the early part of the thirteenth century BCE.
Harper's Bible Dictionary gives similar dates.