Tornadoes

Since official records began in 1950, the state of New York has recorded tornadoes in every year except for 1950, 1951, and 1953. Even these absences are probably due to incomplete data rather than an actual lack of tornadoes, as most F0 and F1 intensity tornadoes were missed at this point in history.

New York City was hit by known tornadoes in the years 1985, 1990, 1995, 2003, 2007, 2010, 2011, and 2012. In 2010 the city was hit by three tornadoes, including two on September 16, one of which was a killer. The strongest tornado to hit the city was an EF2 on August 8, 2007.

Arizona and Utah have warm climates and don't see tornadoes very often. The tornadoes that do affect those states are almost always weak.

Yes. Tornadoes occur throughout Florida and Jacksonville is no exception. Quite a few tornadoes have struck Jacksonville, though must have been of F0 and F1 intensity.

Dry air masses often move out of the Rockies, travelling eastward. When these air masses collide with war, moist air fromt he Gulf of Mexico they form a dry line. Under the right conditions the dry line can generate powerful rotating thunderstorms called supercells, the chief producers of tornadoes. The Rockies don't contribute tot he formationf of hurricanes, as hurricanes can't form over land.

FIRST OFF NEVER USE AN OVERPASS FOR SHELTER.

The Truth About Overpasses Many people mistakenly think that a highway overpass provides safety from a tornado. In reality, an overpass may be one of the worst places to seek shelter from a tornado. Seeking shelter under an overpass puts you at greater risk of being killed or seriously injured by flying debris from the powerful tornadic winds.

The idea that overpasses offer safety probably began in 1991, when a television news crew and some citizens rode out a very weak tornado under an overpass along the Kansas Turnpike. The resulting video continues to be seen by millions, and appears to have fostered the idea that overpasses are preferred sources of shelter, and should be sought out by those in the path of a tornado. In addition, news magazine photographs of people huddled under an overpass with an approaching tornado imply that this is the correct safety procedure. NOTHING CAN BE FURTHER FROM THE TRUTH! http://www.crh.noaa.gov/ddc/?n=over

WHAT SHOULD YOU DO If you're outside in a car or in a mobile home, go immediately to the basement of a nearby sturdy building. Sturdy buildings are the safest place to be. Tornado winds can blow large objects, including cars and mobile homes, hundreds of feet away. Tornadoes can change direction quickly and can lift up a car or truck and toss it through the air; never try to out-drive a tornado. Mobile homes are particularly vulnerable. A mobile home can overturn very easily even if precautions have been taken to tie down the unit. If there is no building nearby, lie flat in a low spot. Use your arms and hands to protect your head. Tornadoes cause a lot of debris to be blown at very high speeds, and you can be hurt by this debris if it hits you. Dangerous flying debris can be blown under highway overpasses and bridges, or weaker overpasses and bridges could be destroyed. You will be safer lying flat in a low-lying area where wind and debris will blow above you. Tornadoes come from severe thunderstorms, which can produce a lot of rain. If you see quickly rising water or flood water coming towards you, move to another spot. Avoid places with wide-span roofs, such as auditoriums, cafeterias, large hallways, or shopping malls. Wide-span roofs are frequently damaged or destroyed in tornado winds, providing less protection and more risk of injury, than roofs over smaller rooms.

MORE INFORMATION ON TORNADO SAFETY

http://www.crh.noaa.gov/lmk/preparedness/tornado_large/index.php

http://www.disastercenter.com/guide/tornado.html

http://www.srh.noaa.gov/fwd/wcm/safety_rules_lists.pdf

http://www.nws.noaa.gov/om/brochures/tornado.shtml

http://www.srh.noaa.gov/elp/swww/v5n1/tornadoes2.htm

http://www.spc.noaa.gov/faq/tornado/

http://www.spc.noaa.gov/faq/tornado/safety.html

http://library.thinkquest.org/03oct/00758/en/disaster/tornado/safety.html

http://www.tornadoproject.com/safety/safety.htm

http://www.nssl.noaa.gov/faq/faq_tor.php

WHY OVERPASSES ARE NOT TO BE USED FOR SHELTERS

http://www.srh.noaa.gov/oun/papers/overpass/slide01.html

agreed completely but if you cant reach shelter lie face down in a ditch with you hands over your head.

Several homes had moderate to severe damage around the area called Hickory Flats. There are lots of downed trees and damage to several barns. Luckily no one was hurt during the tornado.

Fiji has never been struck by a tornado in my knowledge, although one was reportedly spotted in 2011, it was later proven not to be a tornado.

Rhode Island has the second lowest number of tornadoes. This is a somewhat misleading statistic, however due to Rhode Island's small size.

When cold air from Canada pushes into warm, moist air from the Gulf of Mexico the warmer, less dense air gets forced upwards. This often results in thunderstorms. Under the right conditions these storms can produce tornadoes.

It has a mix of the two. As is true of any place most tornadoes in North Dakota are weak. But occasionally it does get really bad ones. One of the most notable was the F5 tornado that struck Fargo, North Dakota in 1957. One thing that should be noted is that since North Dakota is rather sparsely populated the tornado there have less opportunity to cause a lot of damage.

The odd one out is a torpedo. Hurricanes, cyclones, and tornadoes are natural events. A torpedo is a man-made weapon.

Tornadoes can occur anywhere in New Jersey. That some locations but not others have been struck has simply been a matter of chance.

Yes, but they are rare

Yes. Since records began in 1950 there ave been 58 tornadoes recorded in Delaware, some as strong as F2.

Depends on where you are, whether you want to know how many tornadoes have hit the United States, or a single state, or even somewhere else.

Peru doesn't have tornadoes

Tornado Alley does not have exact boundaries. Some maps include North Dakota, or parts of it, in Tornado Alley while others do not.

Mostly, around when tornadoes hit it hails. But it does vary too. From hail, to rain. However, the tornado itself does not produce the precipitation: the parent thunderstorm does.

Often a tornado is found in a precipitation free area of a storm.

The climate conditions are not quite right for high frequencies of tornadoes. To form tornadoes usually need a collision of warm moist air with cooler or dried air to create thunderstorms and wind shear to make those thunderstorms into the supercells that produce most tornadoes.

This setup does not occur very often in Europe.

Approximately $1.5 billion in 1999 amounts which is equivalent to about $2 billion today. About two thirds of that damage was from one tornado.

The Tri-State tornado of March 18, 1925.

No. Texas gets more tornadoes than any other state.

Latent heat of evaporation of water to steam is 2270 KJ/Kg

If you are interested in the risk of tornadoes today, the Storm Predictions Center's day 1 convective outlook maps the liklihood of a tornado ocurring within 25 miles of any given point. Other maps show the likelihoods for hail and damaging thunderstorm winds. See the first link for that map. See the second link for the general frequency of occurence.

An F4 tornado moved along the northern part of the San Antonio area on April 28, 1953, killing one person.