Tsunamis occur after an earthquake. Earthquakes that occur in the middle of the ocean can force a tsunami to make landfall.
Weather [hurricanes, tornadoes, floods], volcanoes, earthquakes, avalanches, tidal waves (tsunamis), and fire
Tsunamis are primarily caused by underwater earthquakes, volcanic eruptions, or landslides which disturb the ocean floor. While weather conditions may influence the generation of tsunamis, such as in the case of typhoons or hurricanes, they are not the main cause. Human activities like underwater explosions or collapsing coastal structures can also trigger tsunamis but these are rarer occurrences compared to natural causes.
Landslides and other big impacts like volcanic eruptions cause mega tsunamis
What causes the tsunami is an earthquake under ground and it blows the water to land
The mass of the wavefront causes most of the damage.
Of these things, earthquakes are the only ones that can cause tsunamis.
usually and underwater volcano.
Tsunamis are caused by shifts in tectonic plates in the middle of the ocean. Once they come ashore, tsunamis can cause millions of dollars in property damage.
They are fully surrounded by water.
tsunamis come from a disturbance in the water like a volcanic erruption which causes the water to draw back creating a huge wave
Tsunamis are caused by undersea landslides. There are many possible causes for undersea landslides, but the most common are undersea earthquakes.
The pacific plate slides across the North American plate for example, which causes tsunamis to form do to underwater earthquakes