Yes, there have been a number of cases of tornadoes crossing rivers and lakes.
Tornadoes most often form on land, but they can form over water.
They can, but most tornadoes happen on land.
Tornadoes are generally considered a land based phenomenon. There are however waterspouts which are essentially tornadoes on water, though they are generally not counted as tornadoes unless the hit land.
No. A tornado that moves onto water will keep going without being significantly affected. In such a case it is called a waterspout. Waterspouts can also develop on water and then move onto land as tornadoes. There are numerous examples of tornadoes crossing water. Most notably, the three deadliest tornadoes in U.S. history all crossed the Mississippi River. See the links below for tornadoes moving across water.
Generally tornadoes form over land, not water.
No. Hurricanes start over water and tornadoes are on land.
Tornadoes can form on both land and water, but are most commonly seen on land.
They can form on either on water or on land, but it is more common for them to form on land. A tornado on water is called a waterspout.
Tornadoes that occur over water are typically referred to as waterspouts. They are similar to tornadoes but form over a body of water instead of over land. Waterspouts can be dangerous to marine vessels but typically do not cause as much damage as tornadoes on land.
Tornadoes typically start on land, as they form due to the interaction of warm, moist air from the surface and cool, dry air aloft. However, tornadoes can also form over water if certain conditions are met, such as in the case of waterspouts.
Tornadoes generally form over land and whether they are on land or over water has little effect on their intensity. It is a hurricane that weakens as it hits land.
No. Tornadoes usually form on land, not water. Tornadoes on water are called waterspouts. Tornadoes are spawned by thunderstorms, which are fueled by warm, moist, unstable air. A cold body of water tends to stabilize the atmosphere, making thunderstorms and tornadoes less likely. A warm body of water has the opposite effect.