Tornadoes

No. The unequal heating will produce breezes, and perhaps clouds and rain, but much more is required to produce a tornado.

Tornadoes in the U.S. are rated on the Enhanced Fujita scale (or the original Fujita scale fore tornadoes Prior to February 2007), which runs from EF0 at the weakest to EF5 at the strongest. Ratings are based on wind speed estimates derived from the severity of the damage done. About 60% of tornadoes are rated EF0.

Tornadoes can clear out old vegetation, allowing new growth.

No. Intense tornadoes (those rated EF3 or higher) only account for about 3% of tornadoes in the U.S. Most tornadoes are rated as weak, EF0 or EF1.

Very rarely do tornadoes tear up the ground. Those that do are among the very strongest. In fact, one tornado in 2011 was given a rating of EF5, the highest rating possible, partially because it ripped away parts of the ground.

Weak tornadoes typically last less than 5 minutes.

Tornadoes and thunderstorms have always been frequent in the U.S. However, advances in technology such as Doppler radar and cell phones have made it easier to detect and report such events.

The common idea is that a warmer climate means that there will be more energy to power violent storms such as tornadoes. This view is grossly oversimplified. Weather and climate are very complex and difficult to predict. Scientists are still uncertain how climate change might affect tornadoes.

Hurricanes tend to be deadlier than tornadoes for two main reasons. First, hurricanes are huge compared with tornadoes. This means they affect larger areas and so have more opportunity to kill. Also, while tornadoes are chiefly wind events hurricanes produce both intense wind and major flooding. 90% of all hurricane deaths are drownings.

The Enhanced Fujita scale is used to rate tornadoes.

No. The closest that Twister comes to any real events is the Dorothy probe, which was inspired by the T.O.T.O. probe that was created in the 1980s, but never successfully deployed.

That would be a tornado. Once the process starts, a tornado can form in a matter of seconds. Hurricanes, by contrast, usually take several days to form and are easy to track.

On 2002 April 28, an F4 tornado struck southern Maryland (La Plata), killing four people and destroying many buildings. This was initially thought to have been an F5 tornado and may have been the most severe tornado recorded in Maryland. La Plata was also the site of Maryland's most deadly tornado on November 9, 1926, when 17 people died, most of them in a small schoolhouse in La Plata.

Condensation and wind shear are both important in tornado formation. Tornadoes develop from thunderstorms, which are powered by the energy released from condensation. Wind shear is what gives thunderstorms the rotation then need to produce tornadoes. Tornado-producing storms may form along a stationary front, but are more common along cold fronts.

That was on 1 Jul 2010. Bangladesh is one of the countries that gets hit by thurderstorms and hurricanes.

Hail and tornadoes are most often associated with cold fronts, but can occur with dry lines or, lest often, warm fronts.

No exact date is given for the movie. The tornado itself is fictional as no tornado in 1969 was rated F5.

Yes, there are tornadoes in Africa.

A barometer is an instrument used to measure atmospheric pressure. It can measure the pressure exerted by the atmosphere by using water, air, or mercury. Pressure tendency can forecast short term changes in the weather. Numerous measurements of air pressure are used within surface weather analysis to help find surface troughs, high pressure systems, and frontal boundaries. http://en.wikipedia.org/wiki/Barometer#Applications

Most waterspouts have a a more tubelike appearance while most land based tornadoes are more funnel shaped. This has mostly to do with the fact that most waterspouts form and are driven by a different mechanism than most land tornadoes.

Yes. Alabama had many tornadoes in the 1960's. 155 were recorded, though at that time we still missed most weak tornadoes so the actual number is probably much higher. Some of the worst include the F5 tornado that tore across parts of Mississippi and Alabama on March 3 1966, Killing 58, though the worst effects were in Mississippi. Another was an F4 tornado Southeast of Birmingham on January 24, 1964, killing 10.

Secondary succession follows tornadoes, if there is any succession. Tornadoes can bring down many trees and damage vegetation, but they generally leave the soil intact.

A flood is a case of water being on land where it normally is not. Most floods are the result of too much rain and/or overflowing rivers and streams.

A hurricane is a violent, large scale storm system the forms over warm ocean water that sometimes strikes land. Hurricanes bring powerful winds, heavy rain, large waves, and an upsurge in ocean levels. Hurricanes often cause floods and sometimes produced tornadoes and landslides.

A tornado is a violently rotating vortex of air that can occur during a thunderstorm. Unlike hurricanes, with which they are sometimes confused, tornadoes are not their own weather systems but small-scale, short-live vortices, though they can be more violent than even the strongest hurricanes.

A landslide is a massive, sudden downhill movement of rock or soil. Landslides are often triggered by rain-soaked soil or earthquakes, but can also occur spontaneously.

An EF3 tornado could probably throw a car a few tens of yards. It could probably move a car a few hundred yards by bouncing and rolling it.