When you have a storm growing upwards (updraft winds with it), the updraft vertical winds will interfere with those horizontal winds more and more the higher the storm grows. Think of three air streams of wind flowing horizontally: One at 10,000 ft, the other at 20,000 ft, and the last at 30,000 ft. A mesocyclone is formed when a strong updraft flows into a storm (all strong storms have one) and it meets with upper level winds. Next, the storm could get the characteristics of a mesocyclone storm. Remember, whenever you see a cloud grow UPWARDS with towering columns, or even an “anvil-shaped” top, those are signs of a strong developing storm. Once the storm has formed, the element that really grows the storm ‘upward” is the warm, convective, moist, spring /summer air. The basics of a tornado’s formation begins with the typical elements needed for storm development. Just look at the progression of technology we have now just in the past 50 years! This was confirmed just a year or two later as the Doppler Radar came out. Then finally in the 1970’s a supercell was defined as a separate storm type. This gave way to the development of the “Fujita Scale” by him in 1971. They called tornadic storms “storm cyclones” and they called tornadoes “tornado cyclone.” Then in 1957 Theodore Fujita identified parts of a storm and proposed the first workable storm structure model that explained tornado and storm development. Now, in the 1950’s as tech slowly increased, they had the beginnings of instruments to gather data from storms and they began to learn more. This was because before then meteorologists were forbidden to use the word “tornado” because they had no scientific explanation for such storms so they assumed it must be “dark” or “cursed” and must not be talked about. In the 1950’s the term tornado was just coming about. But, in reality and with all the modern technology, we have seen just how amazing yet complex the structure and design of a tornado really is. Unfortunately, back then, many believed severe storms and tornadoes were just their gods punishing them and that they controlled these. Tornadoes appear in biblical writings as “whirlwinds.” Tornadoes have also been referenced by the Greek philosopher Aristotle in 4th century B.C. Tornadoes have existed for as long earth has been around. The second most common areas to find tornadoes in is Bangladesh and Argentina. So the US by far gets the most tornadoes per year. Keep in mind that tornado records and severe weather records only go back to the mid 1900’s, so any tornadoes before then could not get averaged up into this final number. The most common area to find tornadoes is in the US with over 1,200 tornadoes on average a year.
Go to the “Basic Safety Tips” section to see many important resources and also the “Good Resources” section to see the worst US tornadoes, some very interesting statistics, and outside source research. Tornadoes, while most only last a few minutes, some can cause catastrophic damage very quickly in a localized area over a path of several miles. A more simple definition of a tornado is a violently rotating column of air that extends down from a thunderstorm. Moisture, wind shear, and temperature all come into consideration when tornadoes try to form in a supercell thunderstorms. tornadoes form under a wall cloud under certain conditions.
#Shelf cloud signs of a tornado how to#
In Texas, we all know what tornadoes are capable of - just look at the news! Here, you can learn what tornadoes are, what destruction they can cause, how to prepare for a tornado, how to properly execute tornado safety, what warnings and watches are, what to do during a tornado, where to be during a tornado, and what to do after a tornado! All of your questions answered here! The time is now to learn about this later may be too late. Types of Weather Warnings and Weather Terms.
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