Hurricanes can only develop over warm ocean water. Tornadoes can form on water but usually form on land.
Not usually. Tornadoes generally form on land. Kansas is one of the most tornado prone area in the world and it is nowhere near the ocean.
Hurricanes often begin as disturbances off the coast of Africa.
They don't. Hurricanes lose strength as they pass over land. This is because their gain their energy from the moisture that evaporates off warm ocean water. When a hurricane strikes land it is cut off from this energy source.
A Hurricane, because a Hurricane starts on water then off of the water into the land.
Hurricanes get their energy from warm ocean water. When a hurricane moves over land it is cut off from its power source.
Warm ocean water is the source of power for a hurricane. If a hurricane moves over land it will be cut off from that power source, causing the storm to weaken and the pressure to rise.
The ocean waters off the coast of the northeastern and northwestern U.S. are cold. In order for a hurricane to form the ocean must be warm.
Over the warm ocean water, the disturbance was strengthened by moisture that evaporated off the ocean surface and began to strengthen and organize.
Hurricane Ivan originated as a tropical wave off the west coast of Africa, near Cape Verde. It intensified into a tropical storm and then a hurricane as it moved across the Atlantic Ocean towards the Caribbean and Gulf of Mexico.
Hurricane Ike began on the coast of Africa. When it started it was only at the strength of a trpoical storm, then it grew into a hurricane. It lost power a little bit by the time it was in the mid Atlantic but it was yet still a hurricane form. By the time it was at the coast of Florida it was a powerful hurricane. It ended in Houston. That was when it did the most damage.
Hurricane Andrew formed over water, as do all hurricanes.
Tornado sirens go off when a tornado warning is issued and during their monthly test.