Tornadoes
Tsunami
A tsunami is not a tidal wave, but rather a series of waves, known as a wave train. A tidal wave can be predicted since they are produced by the daily tides. A tsunami can’t be predicted since it’s caused by some violent disturbance in the ocean such as an earthquake or hurricane.
Waterspouts
When a tornado strikes at sea they are known as waterspouts or vortexes. In North America, the Florida Keys see the largest number of waterspouts per year-400 to 500 per season.
Thunderstorm
Cloud-to-ground lightning is the second most common type of and is the most dangerous threat. It comes from a discharge between a cumulonimbus cloud and the ground.