I think it is pretty likely the Thera/Santorini was around 1625 BC. There apparently was a start to the vulcanism there about 20 years earlier which caused the people to move before the final cataclysm. I think this period corresponds with the disturbances of the Hyksos period, and the general climate disturbance of the volcano could have driven conquering people into Egypt, perhaps from the middle east.The only eruption on Calliste (another ancient name for the island) attested in ancient sources was circa 200 BC. The supposedly largest-ever-in-historical-times eruption is a 20th century invention.
Archeological reports that I have encountered several times indicate there was earthquake/volcanic disturbance of a less serious nature than the final cataclysm, which nevertheless was sufficient to encourage the populace of Santorini/Thera to move away before the big one, and occurred about 20 years earlier. I can't remember the specific sources, as I became interested in this subject 6 years ago, and a lot of material has passed before my eyes since then.