Most of the TRS systems form between 10 and 30 degrees away of the equator and 87% form no farther away than 20 degrees of latitude, on both hemispheres.
On the other hand, due to negligible Coriolis effect, tropical cyclones rarely form or move within about 5 degrees of the equator.
Tropical cyclones move slowly westward when near equator and then intensify as they move further.
Initially TRS travels between W and WNW in the NH and between W and WSW in the SH. During their passages, they curve away from the equator, which are N, then NE in NH and S, then SE in SH. These recurvings are normally done at about 30º N and 30º S.
Again sometimes a TRS does not recurve at all and continues on same route, until cross the coast line.
The of speed of TRS is usually about 10 knots in their early stages, which increases a little with latitude, but it seldom exceeds 15 knots before recurving, but thereafter 20 to 25 in usual, though speed of 40 knots or even more have been reported.
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