These can develop from hurricanes that make landfall, or from rotating thunderstorms called supercells
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Cyclone - Wikipedia  In meteorology, a cyclone is a large scale air mass that rotates around a strong center of low atmospheric pressure. They are usually characterized by inward spiraling winds that rotate counterclockwise in the Northern Hemisphere and ... These zones contract and form weather fronts as the cyclonic circulation closes and...
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Storms - Dictionary definition of Storms | Encyclopedia.com: FREE ...  Hurricanes batter coastlines and islands with high winds, drenching rain, and waves. ... The most intense thunderstorms, called supercells, will produce battering hail, ... of rotating air, similar to a tornado, over a body of water) can also develop away ... per hour) generally cause extensive damage when they make landfall.
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The Online Tornado FAQ (by Roger Edwards, SPC)  Mar 29, 2016 ... At what wind speed of the cloud-to-ground vortex does a tornado begin? ... tornadoes occur from supercells--which are rotating thunderstorms with .... Dr. T. Theodore Fujita developed a damage scale (Fujita 1971, ... In a real-life tornado track, these ratings can be mapped together more smoothly to make a...
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How Tropical Storms and Hurricanes Spawn Tornadoes - Live Science  Jun 6, 2013 ... Hurricanes that make landfall often spawn tornadoes, adding to ... First, most hurricanes carry with them individual supercells, which are rotating, well-organized thunderstorms. ... All tornadoes need thunderstorms to form, said Brian McNoldy, ... These alternating winds can create swirling air, called rolls.
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Tropical cyclone - Wikipedia  A tropical cyclone is a rapidly rotating storm system characterized by a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy ... Tropical refers to the geographical origin of these systems, which form almost exclusively over tropical seas.
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Thunderstorm - Dictionary definition of Thunderstorm | Encyclopedia ...  Severe thunderstorms and their related phenomena produce significant human .... that is produced by a 100 million-volt electrical discharge in the atmosphere. ..... It begins when an invisible stream of electrons, called a stepped leader, surges...
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Weather FAQ: Hurricanes - usa today  A: In the Northern Hemisphere, the winds flow in toward the storm's center in a ... In other parts of the world they are just called "tropical cyclones. ... If you scroll down to the "Naming basics" headline you'll find a link to "the list of retired...
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Tropical cyclone - McGill School Of Computer Science  A ''tropical cyclone'' is a storm system fueled by the heat released when moist ......  (daaih fng ( Cantonese); d fng ( Mandarin)) which means "great wind.
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What Are the Parts of a Hurricane? - Weather Blog - AccuWeather  Apr 30, 2010 ... What goes up must come down, so with the violent rising air converging toward the storm center at the eye, sinking air develops within. This air...
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This question originally aired on December 2, 1996... | Jeopardy ...  Dec 2, 1996 ... ... 1996 Category: SCIENCE & NATURE Question: This term refers specifically to a tornado that forms over a lake or ocean Answer:...
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Severe Weather 101: Thunderstorm FAQ  There is no one direction the wind comes from when thunderstorms or tornadoes occur. Where warm moist air is forced to rise by hills, mountains, or areas where warm/cold or ... Radars let us see where rain and hail are located in the storm. ... To get thunder you need strong updrafts (convection), which means rapidly...
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Thunderstorm Basics - NSSL The National Severe Storms Laboratory  Thunderstorms are most likely in the spring and summer months and during the afternoon and evening hours, but they can occur year-round and at all hours. ... Lightning is responsible for many fires around the world each year, and causes fatalities. ... The greatest severe weather threat in the U.S. extends from Texas to...
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Kona storm - Wikipedia  Kona storms (also called Kona lows) are a type of seasonal cyclone in the Hawaiian Islands, ... Hawaii typically experiences two to three annually, which can affect the state for a week or more. ... Otkin and Martin identified three types of kona storms: cold-frontal cyclogenesis cyclones (CFCs), trade wind easterlies, and...
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cloud - National Geographic Society  Jan 21, 2011 ... Most forms of heavy precipitation fall from cumulus clouds. The weather they bring ... Cumulonimbus clouds are also called thunderheads.
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List of New England hurricanes - Wikipedia  A New England hurricane is a tropical cyclone originating in the Atlantic Ocean that affects the ... October 18, 1703- A tropical system caused great wind and flood damage; many ships were lost. February 23, 1723- An off-season storm struck...
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waterspout | meteorology | Britannica.com  ... similar to those that produce tornadoes over land. Similar Topics. whirlwind ... For many years, they were called tornadoes over water, a definition still in wide use. ... waterspouts is difficult to determine because most of them occur over oceans, ... Banks of Newfoundland, on the Great Lakes, and near Seattle, Washington.
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Hurricane Matthew: 'Big bad beast' storm batters Florida ... - BBC.com  Oct 8, 2016 ... Hurricane Matthew: 'Big bad beast' storm batters Florida ... Occasionally you hear the crack of a tree as a gust rips down branches or you see debris whipping ... Most people here seem to have taken the warnings seriously.
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Hurricanes: The Greatest Storms on Earth : Feature Articles  In fact, during its life cycle a hurricane can expend as much energy as 10000 nuclear bombs! ... The eye is the calmest part of the storm because the strong surface winds converging ... Category 1: Winds 119-153 km/hr (74-95 mph). ... Major damage to lower floors of all structures located less than 15 feet above sea level...
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Tropical cyclone - Wikipedia  A tropical cyclone is a rapidly rotating storm system characterized by a low-pressure center, ... Cyclone refers to their cyclonic nature, with wind blowing counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere. .... In a weaker storm, the eye may be obscured by the central dense overcast,...
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News | Shoalhaven Astronomers | Amateur astronomers from ...  The key finding: cloud particles at the top of the great storm are composed of ... pushed high into the atmosphere, resulting in the towering, billowing clouds ... vertical winds of more than 300 miles per hour for these rare giant storms. ... storms as well as previous observations that detected water and ammonia in vapor form.
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Tornado - Wikipedia  A tornado is a violently rotating column of air that spins while in contact with both the surface of .... Tornado refers to the vortex of wind, not the condensation cloud. ... Among many meteorologists, the funnel cloud term is strictly defined as a rotating ..... They form at the bases of cumulus congestus clouds over tropical and...