Lightning storm at Sea of Galilee coastline
The Sea of Galilee is usually quite calm. The mountains of the Golan Heights (the Decapolis in Jesus' time) reach more than 2,500 feet above sea level. The Sea of Galilee is 685 feet below sea level. The mountains and valleys create the perfect path for cold winds to rush suddenly on to the Sea of Galilee, creating a huge storm. We know it today as wind sheer. The Greek word "Seismos" meaning shakings have been used for these storms for centuries. The storms are equated to an earthquake.
23 And when he got into the boat, his disciples followed him. 24 And behold, there arose a great storm on the sea, so that the boat was being swamped by the waves; but he was asleep. 25 And they went and woke him, saying, “Save us, Lord; we are perishing.” 26 And he said to them, “Why are you afraid, O you of little faith?” Then he rose and rebuked the winds and the sea, and there was a great calm. 27 And the men marveled, saying, “What sort of man is this, that even winds and sea obey him?”