How are tornadoes in the northern hemisphere different from tornadoes in the southern hemisphere? The sense of rotation is usually the opposite. Most tornadoes -- but not all! -- rotate cyclonically, which is counterclockwise in the northern hemisphere and clockwise south of the equator. Anticyclonic tornadoes (clockwise-spinning in the northern hemisphere) have been observed, however -- usually in the form of waterspouts, non-supercell land tornadoes, or anticyclonic whirls around the rim of a supercell's mesocyclone. There have been several documented cases of cyclonic and anticyclonic tornadoes under the same thunderstorm at the same time. Anticyclonically rotating supercells with tornadoes are extremely rare; but one struck near Sunnyvale, CA, in 1998. Remember, "cyclonic" tornadoes spin counter-clockwise in the northern hemisphere, and clockwise.
A severe thunderstorm which spawned at least four tornadoes, one of them anticyclonic, formed over central Iowa during the afternoon of 13 June 1976. This storm moved toward the east-northeast, approximately parallel to but slower than the mean tropospheric flow. The anticyclonic tornado (F3) and the most intense (F5) of the cyclonic tornadoes coexisted for 23 min and traveled on nearly parallel, cycloidal-like tracks, with the anticyclonic tornado 3–5 km southeast of the cyclonic
2007-06-08 19:08:34
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answer #1
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answered by Kevin B 4
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No. More or less, they usually turn in the same direction as low pressure systems. Therefore the direction would depend on where the tornado takes place (latitude). One experiment you can do at home is to run some water in a sink and watch in which direction the water turns as it goes down the drain. There have been frequent reports of strong tornadoes which were turning in the opposite direction.
2007-06-08 08:14:43
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answer #2
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answered by fabiocdn 2
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Winds in a tornado are almost always cyclonic; that is, they turn counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere. This dominance of rotation direction is indirectly due to the Earth's rotation, which plays a role in controlling the structure of all large-scale weather systems.
2007-06-08 07:53:46
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answer #3
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answered by Wolverine 2
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No tornadoes do not spin in one direction they are also known to spin clockwise instead of the regular counter clockwise rotation. This is not a common occurance so if you see one take a picture of it!
2007-06-08 14:33:13
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answer #4
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answered by Anonymous
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In the Northern Hemisphere they spin counterclockwise and clockwise, which is called veering. So tornadoes spin both directions.
2007-06-08 08:00:54
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answer #5
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answered by Invisble 4
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About 90% of the tornadoes rotate counterclockwise, but there are occasions where tornadoes rotate in the opposite direction.
2007-06-08 15:32:15
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answer #6
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answered by trey98607 7
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Tornadoes "turn" in a counter-clockwise motion in the northern hemisphere, but on rare occasions, they can spin clockwise.
2007-06-08 07:56:19
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answer #7
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answered by Upon this rock 3
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This has NOTHING to do with which hemisphere your in! Most tornadoes will spin counter-clock wise because they are extreme low pressure systems.
2007-06-08 10:20:36
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answer #8
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answered by shoeinc 1
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In the northern hemisphere, they turn counterclockwise, due to the Bernoulli effect, or something with a weird name like that. In the southern hemisphere, they turn clockwise. I would just like to point out that water in toilet bowls do NOT turn because of this. The effect is wwwaaayyy too small to affect that little of water. toilets are designed to rotate the water like that, to clean it out better.
2007-06-08 08:25:01
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answer #9
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answered by Anonymous
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Depends on which hjemisphere it's in
Counter clockwise for the N
clockwise for the S
2007-06-08 10:21:33
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answer #10
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answered by rosie recipe 7
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