| 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 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 |
OPSC Notes brings Prelims and Mains programs for OPSC Prelims and OPSC Mains Exam preparation. Various Programs initiated by OPSC Notes are as follows:-
- OPSC Mains Tests and Notes Program
- OPSC Prelims Exam 2020- Test Series and Notes Program
- OPSC Prelims and Mains Tests Series and Notes Program
- OPSC Detailed Complete Prelims Notes