The Thera/Santorini/Minoan Eruption "was one of the largest volcanic events on Earth in human history" (Minoan Eruption, wiki). It is usually put at about 1600 BC. From multiple lines of evidence the date of the Exodus was in 1446 BC (at the Passover (in the Spring)). See How do Christians reconcile archeology with the Bible in the account of the Battle of Jericho? and Who was Pharaoh when Moses lived in Egypt?
The article on Jericho quotes sources saying that the Thera Eruption at 1600 BC is dated between 150 and 170 years too early. This is not because the carbon dating is wrong, but because the tree ring data needed to calibrate the carbon dating is of poor quality. This is the belief of archaeologists such as Manfred Bietak based on other archaeological data.
If the Thera Eruption is dated 150 to 170 years later than 1600 that would put the date at between 1450 and 1430 BC, which strikingly, the Exodus date of 1446 falls within. As I have said in the answer to "Who was Pharaoh when Moses lived?" the sea port of Peru-Nefer at today's "Tell El'Daba", previously the location of the Hyksos capital city of Avaris and later called Raamses was abandoned in the reign of Amenhotep II (1452-1425).
Even though the maps show that Tell El'Daba/Peru Nefer is inland in the Nile delta, it was a main sea port for Egypt. It is tantalising to speculate that a massive tsunami caused by the Minoan/Santorini/Thera Eruption caused the destruction of Peru Nefer and its abandonment. It is also tantalising to speculate that the same tsunami played a big part in, firstly, the "parting of the waters" (together with the strong wind) and, secondly, in the destruction of the chariot army of Egypt.
Better tree ring data will be available at some point. One of the positive side effects of the paranoia concerning "Global Warming" is hugely greater funding available for studies in the history of the world climate, including gathering in of tree ring data.