Tornadoes

As of March 3, 2011 the most recent tornado to strike Minnesota was an EF0 near of the town of Dalbo in the east central part of the state on July 30, 2011.

Two other EF0 tornadoes touched down in Minnesota early that same day, one in Todd county in the center of the state and another in Traverse County, near the state line with North and South Dakota.

However, there will certainly be more tornadoes in Minnesota in the future.

Unlike hurricanes, tornadoes do not have names.

Tornadoes happen in Miami for the same reason they happen anywhere else. See the related question for how tornadoes form in general.

Tornadoes do not get names as hurricanes do. Instead they are usually referred to by the places they hit, such as the Joplin tornado, or the Wichita Falls tornado

Tornadoes are not given names as hurricanes are. Some are referred to by the places, they hit such as the Joplin, Missouri tornado, or the Xenia, Ohio tornado.

There are a number of famous tornados. These include the 1977 Madaripur-Shibchar tornado, the 1951 Comoro tornado, the 1964 Narail-Magura tornado, and the 1851 Sicily tornado.

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EF stands for Enhanced Fujita. It was changed from the original Fujita or "F" scale in order to provide more accurate ratings and to correct wind speeds. The original Fujita scale's damage descriptions were too generalized and it overestimated the winds of strong tornadoes.

As of Fberuary 25, 2014 the last confirmed tornado was an EF1 the near Granthan, North Carolina on February 21. It was one of 7 tornadoes to touch down in the United States on that day.

It ranges from EF0 to EF5 based on the degree of damage the tornado causes.

An EF0 tornado causes only light damage (broken tree limbs, shingles missing) estimated wind speeds of 65- 85mph

An EF1 causes moderate damage (significant loss of roof surface, windows broken) with estimated wind speeds of 86 - 110mph

An EF2 causes significant damage (roof completely torn off, cars flipped, trailers demolished) with estimated winds of 111 - 135mph

An EF3 causes severe damage (walls torn from well built homes, many trees uprooted, trains thrown) with estimated winds of 136 - 165mph

An EF4 causes devastating damage (homes leveled, trees stripped of bark) with estimated winds of 166 - 200mph

An EF5 tornado causes total devastation (well built homes torn clean from foundations, concrete structures flattened) with estimated wind speeds of over 200mph

Another name for a tornado is a twister.

Tornadoes start up in the clouds & make their way down to touch land.

Forecasters use massive computer programs. Tornadoes form under certain conditions, and if forecasters see those certain conditions, they study the area more. However, these models cannot predict where a tornado will form, only regions where there is the potential for tornadoes. On the scale of individual storms scientists use Doppler radar to detect rotation within a storm. Depending on the signature this can either indicate the mesocyclone that produces a tornado, or the tornado itself.

Tornadoes are often called twisters or funnels. Some people call tornadoes cyclones, but this is incorrect terminology as a cyclone is technically a much larger type of weather event than a tornado.

Tornadoes can damage or destroy homes, businesses, crops and other property and kill or injure pets, livestock, and people.

Tornado, which is the preferred scientific term

Some people call tornadoes cyclones, though this is technically incorrect, as a cyclone is a different type of storm. A tornado on water is called a waterspout.

Such a big question and I'll try and explain it briefly and if anyone wants to elaborate and improve it please do. The U.S experiences all climate extremes because of its sheer size and topography. Tornadoes are 'common' (they aren't that common, many sources approximate 1,000 reports a year, this year looks like it will surpass that.) because of a number factors and I'll pin point the main one which includes supercell formation. A classic answer to why a severe weather event occurs especially in terms of the U.S, is the hot air cold air collision which is partially true but nowhere near an actual answer. You need instability and on a late spring day in states such as Texas, Oklahoma, Kansas et al many ingredients are present for severe weather which can create a tornado in exceptional circumstances. So basically convection, high humidity and wind-shear can create a steady state storm. (that really is basic, look up supercell on wiki there is more to it) A tornado comes about from the creation of a mesocyclone which is a small scale rotation within the cloud which is typically two to six miles wide. This is created primarily by wind shear (in this case often a veering wind, so a clock-wise change of wind direction with height) again look up these terms to find out more. The mesocyclone always seems to position itself in a similar area within the supercell and a lowering called a wall cloud can form and it is at this point where tornadoes become a possibility. Wall clouds form because of precipitation cooling which causes air to descend within the system and it creates the lowering. Again other things play a part as well in that!
Heres the annoying part which almost makes my write up pointless but I, like many other people love severe weather can could probably talk about it for days! Why a tornado forms from this lowering is not known for certain! A generally accepted theory is that an exceptionally large updraft of air caused by the interaction of the storm system and it's environment creates a funnel and once in contact with the ground it creates havoc and generally speaking the more energy the storm has, the stronger the winds the tornado will have. Look at Moore, Oklahoma tornado may 3rd 1999. That had a tremendous amount of energy and the damage photos from that day say it all. The size of the storm compared to the size of the tornado has not been proven though so don't take it as fact. The size of a tornado in its literal sense does not necessarily create the most damage either.
so tornadoes are most likely to form in unstable conditions with wind-shear present (the jet stream can help greatly here too.) Theres a lot more points to cover but for further reading look up
. CAPE
. Positive vorticity advection
. RFD and FFD (i think supercell on wiki covers these points)
. Hook echo
and to get an idea of instability look up lapse rates.

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A tornado can damage or destroy homes, businesses, crops, and recreational areas. People and animals can be killed or injured.

The formation of clouds involves condensation, where water vapor in the air cools and turns into liquid water droplets or ice crystals. This process occurs when the air reaches its dew point, causing the water vapor to change state from a gas to a liquid or solid form within the cloud.

The safest place during a tornado is in a basement or similar underground shelter.

Yes, go on youtube and you'll see that video. Just to let you know the last tornado in Dallas was a really long time ago.

Tornadoes can happen in any location where the necessary atmospheric conditions converge, such as in Tornado Alley in the central United States. They often occur in areas with warm, moist air colliding with cool, dry air, leading to the formation of severe thunderstorms and tornadoes.

That depends on the frequency of tornadoes in the area and the period of time you are talking about. You are a lot more likely to see two tornadoes hit the same place if you watch it for a century than if you watch it for only a year. On the whole it is very unlikely for any given spot to be hit twice in a person's lifetime.

That being said, the "lightning never strike twice" rule does not apply. Getting hit by one tornado does not mean you are less likely to be hit by another.