Authorities have declared a state of emergency on a second Greek island as a series of earthquakes continued to rattle the south-eastern Aegean Sea region.

Past tsunamis have hit Israel’s coast, and with Santorini’s seismic activity at an all-time high, the risk of another wave is being taken seriously. Authorities remain on high alert, as the region watches and waits to see what happens next.

The Greek island of Santorini was struck by the latest in a string of earthquakes Tuesday, this time a 4.8 temblor. The government said it will backstop the island destination's tourist industry.