| Tropical Cyclone | Extra tropical cyclone |
| It has thermal origin and derives its
energy from the latent heat of condensation |
It has dynamic origin involving coriolis force and movement of air masses. The energy of a temperate cyclone depends on the densities of air masses. |
| It is confined to 10o – 300 N 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/>
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and S of
equator. |
It is confined to 350 – 650 N and S of equator. It is more pronounced in Northern hemisphere due to greater temperature contrast. |
| It is limited to small area. Its typical
size is 100 – 500 kms in diameter. It varies with the strength of the cyclone. |
It covers a larger area. Its typical size is 300 – 2000 kms in diameter. |
| Doesn’t last for more than a week | It lasts for two to three weeks |
| It moves from east to west | It moves from west to east |