• SebaDC@discuss.tchncs.de
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      4 hours ago

      I’m guessing it’s because they rotate in different direction in the northern and Southern hemisphere.

      So crossing would imply switching direction, which would require to put that energy “somewhere” and it’s physically not possible.

    • mmddmm@lemm.ee
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      9 hours ago

      Is the only one Brazil ever recognized as a hurricane. But it’s believed that they happen every once in a while, they are just not classified correctly.

  • Dave@lemmy.nz
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    11 hours ago

    Not only is NZ on this map but it’s not even way off in the corner!

    • Dave@lemmy.nz
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      11 hours ago

      Stole explanation from r/ELI5:

      When you stand on the north pole how fast are you moving relative to the earth’s core?

      Zero, you just spin around in place once every 24 hours.

      When you stand on the equator how fast are you moving?

      1000mph, you have to circumnavigate the earth in a day.

      This difference doesn’t matter much when you throw a baseball, but it absolutely matters when you’re a storm the size of a country. > This disparity in relative speed rotates the storm since the equatorial side is moving faster than the polar side, and it provides the swirling structure of the hurricane.

      But here’s the problem - storms in the north spin counter-clockwise and storms in the south spin clockwise.

      That means to cross the equator you have to stop and reverse direction. That’s not happening, and hurricanes never track near the equator because neither the storm itself nor the prevailing winds that push it around can approach this reversal boundary.

    • ShittyBeatlesFCPres@lemmy.world
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      11 hours ago

      Probably Coriolis effect? I’m not a professional meteorologist but I am an amateur meteorologist. I live in New Orleans and hurricanes follow somewhat predictable patterns. (Maybe not always where you can pinpoint exactly where they’re going but they tend to turn north in the northern hemisphere and south in the southern hemisphere.)

      • NocturnalMorning@lemmy.world
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        8 hours ago

        The coriolis effect is a fictitious force, it’s just an artifact of not doing measurements in an inertial reference frame.

        Edit: If I were to attribute it to anything, I’d attribute it to the actual rotation of the earth.

        • Successful_Try543@feddit.org
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          3 hours ago

          As the highs lows are part of the earth’s atmosphere and thus trapped in a non-inertial frame of reference, they indeed experience the fictitious forces, such as the Coriolis and the centrifugal force.

      • Rhaedas@fedia.io
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        10 hours ago

        You can also look at some of the coastlines and see the millions of years of erosion from the same patterns once the continents moved more into what we have now.

  • jqubed@lemmy.world
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    10 hours ago

    Interesting that the western Pacific seems to have so many more category 5 than the Atlantic, and while the South Pacific and Indian Ocean have plenty, the South Atlantic has basically none.