In what direction does a cyclone rotate in the Northern Hemisphere?
141083
An atmospheric closed circulation rotates counter-clockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.
451499
cyclone: an atmospheric system characterized by the rapid inward circulation of air masses about a low-pressure center, usually accompanied by stormy, often destructive weather. Cyclones circulate counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere. \n\nhurricane: a severe tropical cyclone originating in the equatorial regions of the Atlantic Ocean or Caribbean Sea or eastern regions of the Pacific Ocean, traveling north, northwest, or northeast from its point of origin, and usually involving heavy rains. \n\ntyphoon: a tropical cyclone occurring in the western Pacific or Indian oceans.
373244
clockwise in the northern hemisphere, anticlockwise in the southern. this according to the coriolis force, but of course there otehr factors that might influence the direction of the water (geometry of the sink, external vibrations, you turning your finger in water....)
1079475
I would say on the eastern side.  You're still going to be experiencing the most Positive Vorticity on that side.  Though the clouds should be mostly mid and high level clouds.  \n\nAs for formation:\n\nFrom the American Meterological Society glossary:\nA sequence of events by which a warm high or cold low, originally within the westerlies, becomes displaced either poleward (cut-off high) or equatorward (cut-off low) out of the westerly current. \nThis process is evident at very high levels in the atmosphere; it frequently produces, or is part of the production of, a blocking situation.
148092
Wikipedia has a good answer: http://en.wikipedia.org/wiki/Tropical_cyclone\n\nin addition:\n\nhttp://www.britannica.com/eb/article-67118\n\nFormation of tropical cyclones\n\nTropical cyclones represent still another example of sea-air interactions. These storm systems are known as hurricanes in the North Atlantic and eastern North Pacific and as typhoons in the western North Pacific. The winds of such systems revolve around a centre of low pressure in an anticlockwise direction in the Northern Hemisphere and in a clockwise direction in the Southern Hemisphere. The winds attain velocities in excess of 115 kilometres per hour, or 65 knots, in most cases. Tropical cyclones may last from a few hours to as long as two weeks, the average lifetime being six days.\n\nThe oceans provide the source of energy for tropical cyclones both by direct heat transfer from their surface (known as sensible heat) and by the evaporation of water. This water is subsequently condensed within a storm system, thereby releasing latent heat energy. When a tropical cyclone moves over land, this energy is severely depleted and the circulation of the winds is consequently weakened.\n\nSuch storms are truly phenomena of the tropical oceans. They originate in two distinct latitude zones, between 4° and 22° S and between 4° and 35° N. They are absent in the equatorial zone between 4° S and 4° N. Most tropical cyclones are spawned on the poleward side of the region known as the intertropical convergence zone (ITCZ).\n\nMore than two-thirds of observed tropical cyclones originate in the Northern Hemisphere, and roughly the same proportion occur in the Eastern Hemisphere. The North Pacific has more than one-third of all such storms, while the southeast Pacific and South Atlantic are normally devoid of them. Most northern hemispheric tropical cyclones occur between May and November, with peak periods in August and September. The majority of southern hemispheric cyclones occur between December and April, with peaks in January and February.\n\n\n---------------------------------------------\n\nTyphoon is a tropical cyclone located in the western north Pacific basin (between 100E and 180E in the northern hemisphere). The category of a typhoon is decided by the maximum sustained winds, but please note that the typhoon in Japanese standard and the typhoon in international standard is not the same. Finally, among tropical cyclones in the world, the typhoon is the most frequent and the strongest tropical cyclone (http://agora.ex.nii.ac.jp/digital-typhoon/help/world.html.en)\n------------------------------------------------------\n\nhttp://www.taiwanho.com/modules.php?op=modload&name=News&file=article&sid=205\n\nTyphoons (called hurricanes in the Atlantic and East Pacific, and cyclones in the Indian Ocean and around Australia) are the worlds most violent and destructive storm systems. Around 17 typhoons form annually in the West Pacific, of which around one third make landfall. They are giant whirlwinds, with air circulating around an area of low pressure, and high winds extending about 100km from the centre.\n\nMost typhoons form between 5-30 degrees latitude, and 110-180 degrees longitude. Typhoons that form in the east of this region can travel for long distances without being affected by landmasses. This gives them plenty of time to build up their strength. Hence, the very strong and long lasting supertyphoons tend to form closer to the date line. Sea surface temperatures in the Nino 4 region (5S-5N, 160E-150W) affect the longitude at which typhoons tend to form. Warm sea surface temperatures in this region result in more typhoons forming closer to the date line.\n\nSome prerequisites for typhoon formation are listed below:\n\n1. Sea surface temperatures greater than 26C to a depth of 60m. This provides the moisture for the thunderstorm activity in the storm.\n\n2. A large enough drop in temperature with height so that the atmosphere is conditionally unstable to
1122757
The answer is that water can go clockwise or counter-clockwise in either hemisphere. It's a myth that it only goes in one direction in either hemisphere.\n\n    Does water go down the drain counterclockwise in the northern hemisphere and clockwise in the southern hemisphere?\n\n\n    It all depends upon how the water was introduced and the geometric structure of the drain.\n\nOne can find both counterclockwise and clockwise flowing drains in both hemispheres. Some people would like you to believe that the Coriolis force affects the flow of water down the drain in sinks, bathtubs, or toilet bowls. Don’t believe them! The Coriolis force is simply too weak to affect such small bodies of water.\n\nIn his work “Sur les equations du movements relative des systems des corps” (1835) the French engineer Gaspard Gustav de Coriolis (1792-1843) first described this force. The Coriolis force is caused by the earth’s rotation. It responsible for air being pulled to the right (counterclockwise) in the Northern Hemisphere and to the left (clockwise) in the Southern Hemisphere. \n\nThe Coriolis Effect is the observed curved path of moving objects relative to the surface of the Earth. Hurricanes are good examples. They curve to the right in the northern hemisphere and to the left in the southern hemisphere. What makes the hurricanes move in this way is the Coriolis force. \n\nWhat happens at the equator? The Coriolis force is too weak to operate on the moving air at the equator. This means that weather phenomena such as hurricanes are not observed at the equator, although they have been observed at 5 degrees above the equator. In fact, the Coriolis force pulls hurricanes away from the equator.\n\nFor a more detailed explanation of the Coriolis Force see Science World, http://scienceworld.wolfram.com/physics/CoriolisForce.html \n\nRelated Web Sites \n"Getting around the Coriolis effect" - This paper provides a scientific explanation of the Coriolis effect complete with diagrams and examples. It was written by David J. Van Domelen, of the Ohio State University Department of Physics, Physics Education Research Group. \n\nDanish Wind Industry Association - The Coriolis Force\nThis Web site provides animated models of how the Coriolis Force works. \n\nBad Coriolis - The author of this Web site sets the record straight about the Coriolis Force. Presented are numerous cases where incorrect information was provided by reliable sources. Also included are Frequently Asked Questions. \nCoriolis Force - Included in this Web site, from the University of Illinois at Urbana-Champaign, is an explanation of the Coriolis Force and a video demonstrating the Force.\n\nFrom the website "Bad Coriolis":\n\nThe direction of rotation of a draining sink is determined by the way it was filled, or by vortices introduced while washing. The magnitude of these rotations may be small, but they are nevertheless gargantuan by comparison to the rotation of the Earth. I decided to include a picture of a draining sink, and the first one I tried in my house was found to drain clockwise (the opposite of what the silly assertions would have it do here in the northern hemisphere). This direction was determined entirely by the way the tap filled the sink. The direction of rotation of a draining toilet is determined by the way the water just under the rim is squirted into the bowl when it is flushed.\n\n\n\n Is it possible to detect the Earth’s rotation in a draining sink?\n\nYes, but it is very difficult. Because the Coriolis force is so small, one must go to extraordinary lengths to detect it. But, it has been done. You cannot use an ordinary sink for it lacks the requisite circular symmetry: its oval shape and off-center drain render any results suspect. Those who have succeeded used a smooth pan of about one meter in diameter with a very small hole in the center. A stopper (which could be removed from below so as to not introduce any spurious motion
347538
To sum it up, a cyclone is cloud/storm system that spins, and a hurricane is a tropical storm in the Atlantic Ocean. Also, Cyclone is the name for Hurricane type storms that hit Australia. Confusing, I know.
425858
cyclones are the same as tornadoes and occur on land.\n\ntyphoons are the same as hurricanes and occur along the coastline.  In the western hemisphere we call the hurricanes (like in the Americas). In the eastern hemisphere they are called typhoons (like in India).
1079330
Depending on the strength and location of tropical cyclones, these "warm core" storm systems can be described, such as tropical depression, tropical storm, hurricane (in Americas) and typhoon (in Asia). They form between 10 and 30 degrees of the equator and 87% form within 20 degrees of it.  Hong Kong, Taiwan and Japan are situated along the typhoon's path as the jet stream pushes it northward, with the earth’s rotation.\n\nWorldwide, tropical cyclone activity peaks in late summer when water temperatures are the warmest. In the North Atlantic, the hurricane season occurs from June 1 to November 30, sharply peaking from late August through September. The Northeast Pacific has a broader period of activity, but in a similar time frame to the Atlantic. The Northwest Pacific sees typhoons year-round, with a minimum in February and a peak in early September. \n\nSimply, earth's rotation + highest humidity level + location = typhoon (or hurricane).
1040993
according to all India is in Northern Hemisphere... any doubt? consult basic geography book :)
322179
From SPACE.COM:\n\nBack home, all of this has almost nothing to do with your bathtub drain, which creates another spiral shape.\n\nThere is a popular myth, though, owing to the rotational direction of a hurricane, that says the water in bathtubs rotates a certain direction in the Northern Hemisphere.\n\nIt's not true.\n\nThe Coriolis effect does not determine which way the water swirls in your house. The effect is too tiny to impact such a minor, localized process, all experts agree.\n\nThat means water is free to swirl in either direction in tubs in both hemispheres. Which way it goes is determined by the geometry of a particular basin or, if things are perfectly aligned and balanced, then by chance.
241853
Although the earth is rotating in the same direction the angle of incidence is the opposite of that in the northern hemisphere. as the earth rotates the angular momentum causes the water to spin. Think about wheels placed against the surface of the earth and angled so that their axles are pointing at the center of the planet as the earth rotates they will turn in opposite directions.
254000
Both. The rotation of the earth causes storms (and your the water in your toilet) to spin in one direction depending on what hemisphere of the earth you live on.  Wind can also make clouds if blown up a mountain face by forcing warmer air into colder mountain air and thus creating clouds. These clouds form on the windward side of the mountain, and are pushed over the top of the mountain (by the wind) and then disappear on the leeward side of the mountain when the cooler air reaches the lower elevation warmer air.
1000247
In approximate terms, yes.  It's called cyclostrophic flow: the pressure gradient force provides the centripetal acceleration to maintain circular motion.  (pressure gradient force balancing centrifugal force)\n\nGive or take...\n\n*************\nSide note....\n*************\nThe coriolis effect certainly dictates the *direction* of circulation (clockwise in the southern hemisphere, counterclockwise in the northern hemisphere) thus the lack of tropical cyclone formation near the equator.\n\nHowever the apparent acceleration we attribute to the 'Coriolis Force' plays an insignificant role in determining the equilibrium trajectories of air parcels near a hurricane's core.  The distances involved are simply too small (10-100km) - the distance from the surface to the earth's axis changes very little on these scales in the tropics.
206652
All you need to know about cyclones\n\nYour continued donations keep Wikipedia running!    \nCyclone\nFrom Wikipedia, the free encyclopedia\n(Redirected from Cyclones)\nJump to: navigation, search\nThis article is about the meteorological phenomenon. For other uses of the term see Cyclone (disambiguation). \n \nA tropical cyclone in the northern hemisphere.In meteorology, a cyclone is the rotation of a volume of air about an area of low atmospheric pressure. Cyclones are responsible for a wide variety of different meteorological phenomena such as tropical cyclones and tornadoes. Because of this, most weather forecasters avoid using the term cyclone without a qualifying term.\n\nContents [hide]\n1 Structure \n2 Types of Cyclones \n2.1 Tropical cyclones \n2.2 Extratropical cyclones \n2.3 Subtropical cyclones \n2.4 Mid-latitude cyclones \n2.5 Polar low \n2.6 Arctic cyclone \n2.7 Mesocyclones \n2.8 Tornadoes \n2.9 Martian cyclones \n3 Derivation of the term \n4 Cyclone as metaphor \n5 See also \n6 External links \n \n\n\n[edit]\nStructure\nThe center of a cyclone is a low-pressure region. Near the center of the cyclone the pressure gradient force, from high- to low-pressure regions, and the Coriolis force must be in an approximate balance (or else the cyclone would collapse in on itself under the pressure gradient). The wind flow around a large cyclone is anticlockwise in the northern hemisphere, and clockwise in the southern hemisphere, due to the Coriolis effect. Large anticyclonic storms are extremely rare on Earth, though Jupiter's Great Red Spot storm is anticyclonic.\n\n[edit]\nTypes of Cyclones\n[edit]\nTropical cyclones\nMain article: Tropical cyclone \n \nTropical cyclone off the Indian coast.Tropical cyclones (also known as tropical storms, hurricanes and typhoons) are cyclones which form over warm (generally tropical) ocean waters and draw their energy from evaporation and condensation. They are characterized by a strong area of low pressure at the surface and an area of higher pressure aloft. Tropical cyclones are associated with strong thunderstorms, high winds, and flooding.\n\n[edit]\nExtratropical cyclones\nMain article: Extratropical cyclone \nExtratropical cyclones (or low-pressure cells) lie somewhere in between tropical cyclones and mid-latitude cyclones, drawing a portion of their energy through the evaporation and condensation of ocean water, and some through horizontal temperature gradients in the atmosphere. They move out of the tropical regions towards the polar regions, bringing precipitation in the form of rain or drizzle. They often form quickly along cold fronts that have stagnated after moving into an area where warm, moist air exists. The warm, moist air is less dense, therefore it overruns the more dense cold air at and behind the cold front. A cyclonic motion is imparted to the ascending air, naturally, forming a shallow cyclone. Extratropical cyclones are also formed from tropical cyclones when they move into non-tropical regions and lose tropical characteristics.\n\n[edit]\nSubtropical cyclones\nMain article: Subtropical cyclone \nA subtropical cyclone is a weather system that has some characteristics of a tropical cyclone and some characteristics of an extratropical cyclone. They can form in a wide band of latitude, from the equator to 50°.\n\n[edit]\nMid-latitude cyclones\nMain article: Mid-latitude cyclone \nMid-latitude cyclones are generated by the temperature difference between warm and cold air masses, with warm water at high latitudes generally providing that differential. These storms have a cold core, unlike tropical and extratropical cyclones. Similar storms may appear at very high latitudes: these very cold storms are called subarctic (or subantarctic) cyclones.\n\n \nA large low pressure area swirls off the southeastern coast of Iceland.[edit]\nPolar low\nMain article: Polar low \nPolar lows are similar in behavior and size to tropical cyclones, although generally much shorter l
834166
In meteorology, a cyclone is an area of low atmospheric pressure characterised by inward spiraling winds that spin clockwise in the northern hemisphere of the Earth, or counterclockwise in the southern hemisphere. It is a generic description covering a wide variety of different meteorological phenomena such as tropical cyclones, Extratropical cyclones and tornadoes, thus is rarely used by meteorologists without a qualifying term.\n\nThe terms hurricane and typhoon are regionally specific names for a strong tropical cyclone—a non-frontal, synoptic-scale, warm-core low-pressure system with cyclonic surface wind circulation (Holland 1993). Specifically, hurricanes generally refer to such storms in the Atlantic Basin and the Pacific Ocean east of the International Date Line. Typhoons refer to the storms in the north Pacific west of the International Date Line. The typhoon term has also been applied to tropical cyclones in the South Pacific or Indian Ocean, but this is not considered correct usage today\n\nare same
1081261
As the earth rotates on its axis, the atmosphere is rotating with it.  Otherwise there'd be a constant wind, like in a fast-moving car on a still day,  as we were dragged through the atmosphere at the speed of the earth's rotation, yes?   And all winds would blow from east to west, and we know that's not the case.  \n\nBut the rotation of the earth does have an important effect on the weather.   A strange thing about rotating a globe is that a point on the equator has to move much faster to make it all the way around the waist of the globe in 24 hours than a point up around the Arctic circle has to move to make it all the way around the Arctic circle in 24 hours. (you can test this with a piece of string: The length of a piece of string wrapped around a globe at the level of New York is much shorter than a piece of string wrapped around the globe at the equator, right?)\n\n  You know that, looking at the globe with the sun behind your back, as the world turns, the continents pass off to the right (the east). New York crosses into the sun at dawn while San Francisco is still on the dark side of the globe.  Because the surface of the earth at the  equator is rotating faster than the surface of the earth 500 miles north of the equator, so is the air above it.  But the air above the equator isn't attached to the air above a point 500 miles north.  So the faster-moving and slower-moving air rub past each other.  This forms a kind of bow wave at the equator, like the wave that peels back from the bow of a boat as it moves through the water. Think of a big arrow pointing to the right and wrapped around  the equator.  So the air peels  back to either side of the equator, and forms a swirling current--curling counter-clockwise above the equator and clockwise below it.  This is called the coriolis wind.  It's one important factor in where weather comes from.