In Empire Earth disasters are called calamitous. They will be relatively expensive units that count many more times toward the player's population than a normal unit. The prophet will most likely be a very useful unit in the early epochs. As the game progresses, disasters will be less and less damaging to the opponent. To defend against a disaster you must build a temple per area.
Volcano can also make buildings catch fire.
Although this disaster is relatively stagnant, the area within its range will be devastated. Earthquakes also shake the ground within a certain range. Earthquakes are mainly good against buildings. Hurricane - Hurricanes form dark clouds, and destroy any ship that passes by. It might also cast lightning that ships can catch fire on.