An earthquake occurred in Crete, which has caused a tsunami warning to be issued. Here's what it means if you're in the Crete and Greece areas.

A powerful earthquake struck near the Greek island of Kasos early Wednesday, prompting tsunami warnings and widespread alerts across the southeastern Aegean.

An earthquake of magnitude 5.9 struck off the island of Crete in Greece and was felt as far away as Egypt in the early morning hours on Wednesday.The quake was at a depth of 35 km (22 miles) near the island of Karpathos in the Mediterranean Sea,