Tornadoes can form almost anywhere, but are most common in the central United States.
Florida has a very war, moist climate due to its location surrounded by warm, subtropical water. When air from outside the tropics intrudes it can trigger thunderstorms fueled by the abundant warm, moist air. Given wind shear these storms can produce tornadoes. Hurricanes also occasionally produce tornadoes in Florida. However, Florida is in a region hundreds of miles east of Tornado Alley and separate from it. Additionally, while the concentration of total tornadoes in Florida is comparable to that of Tornado Alley, it receives far fewer strong tornadoes.
The Gulf of Mexico provides warm, moist air that is essentially the fuel of the thunderstorms that produce tornadoes. The Rocky Mountains generate dry air masses that, when they collide with the warm, moist air, can produce chains of violent thunderstorms.
One of the famous thunderstorms took place in Moore , Oklama may, 3.
From the NSSL (National Severe Storms Laboratory) FAQ Page. http://www.spc.noaa.gov/faq/tornado/#ClimatologyThere is an old legend that my town is protected from tornadoes by the (hill, river, spirit, etc.). Is there any truth to this?No. Many towns which have not suffered a tornado strike contain well-meaning people who perpetuate these myths; but there is no basis for them besides the happenstance lack of a tornado. Many other towns used to have such myths before they were hit, including extreme examples like Topeka KS (F5 damage, 16 killed, 1968) and Waco TX (F5 damage, 114 killed, 1953). Violent tornadoes have crossed rivers of all shapes and sizes. The deadliest tornado in US history (Tri-state Tornado of 18 March 1925, F5 damage, 695 killed) roared undeterred across the Mississippi River, as have numerous other violent tornadoes. Almost every major river east of the Rockies has been crossed by a significant tornado, as have high elevations in the Appalachians, Rockies and Sierra Nevada. The Salt Lake City tornado of 11 August 1999 crossed a canyon -- descending one side and rising up the other about halfway along its path. In 1987, a violent tornado (rated F4 by Fujita) crossed the Continental Divide in Yellowstone National Park.
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Violent tornadoes have been recorded in most states east of the Rockies. However, most of the violent tornadoes occur on the Great Plains in the central part of the country.
Tornadoes are themselves violent weather events. They ar intense whirlwinds spawned by thunderstorms. Since tornadoes depend on certain weather conditions to develop, climate affects how often tornadoes occur in an area.
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.
The year with the most violent tornadoes on record was 1974, with a total of 36 tornadoes rated as violent.
Most violent tornadoes (F4 and F5) occur in the months of March-June.
The most violent tornadoes generally occur in North America.
England does get tornadoes, however, the vast majority are weak and are unlikely to be reported beyond local news. The last significant tornado in England was an F2 that hit Birmingham in 2005. England is not prone to the violent tornadoes you often hear about in the United States because it has a rather cool climate. The storms that produce strong tornadoes generally need a supply of hot, humid air among other conditions.
The two most basic conditions needed for tornadoes to form are instability and wind shear. Instability occurs when the lower atmosphere is warm and moist and cools with increasing altitude; this is the source of energy for thunderstorms. The best condition for the powerful storms that spawn violent tornadoes is to have a highly unstable lower atmosphere capped by a layer of stable air. This layer allows instability to build underneath it until developing storms are able to punch through it and develop at explosive rates. The other ingredient, wind shear, occurs when the speed and direction of the wind changes direction with altitude. The wind shear can give rise to helicity, or spiraling currents of air. This spiral motion then trnasfers tot he storms and starts them rotating. Tornadoes can then form from this rotation. Nearly all violent tornadoes develop from a kind of thunderstorm called a supercell, which has a distinct rotating updraft called a mesocyclone.
All tornadoes are considered a violent weather events in general terms. However, less than 1% of tornadoes attain a violent rating of EF4 or EF5 on the Enhanced Fujita scale.
No. Tornadoes are violent whirlwinds that can form during thunderstorms.
No, about 1% percent of tornadoes are rated as violent EF4 or EF5). About 75-80% of tornadoes are rated as weak (EF0 or EF1).
No, tornadoes are not calm. They are violent, rotating columns of air that can cause significant destruction and are characterized by strong winds and intense atmospheric instability.