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New Delhi: The occurrence of 5 cyclones over Arabian Sea in 2019 against the normal of 1 per year equals the previous record of 1902 for the highest annual cyclone frequency over Arabian Sea. Also 2019 witnessed development of more intense cyclones over Arabian Sea.
Based on the statistics during 1891-2017, on an average 5 cyclones develop over North Indian Ocean in a year with 4 developing over Bay of Bengal and one over Arabian Sea. However, in the recent past increase in frequency has been observed in formation of cyclones in the North Indian Ocean, Minister of Earth Sciences, Dr. Harsh Vardhan, informed in a written reply to a question in the Rajya Sabha today.
The details of Cyclones formed over North Indian Ocean during 2017 to 2019 follow:
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| YEAR | FREQUENCY OF
CYCLONES OVER |
Total number of cyclones | Intensity with that of Severe City | |
| Arabian Sea | Bay of Bengal | |||
| 2017 | 1 | 2 | 3 | 2 |
| 2018 | 3 | 4 | 7 | 6 |
| 2019 | 5 | 3 | 8 | 6 |
Regarding floods, it is mentioned that, the country has witnessed intense to very intense rainfall activity leading to flood scenario in the recent past. The number of stations reported Very Heavy and Extreme Heavy rainfall in the last three years, from 2017 to 2019, follow:
|
YEAR |
Number of stations reported during SW Monsoon season (June to September) | |
| Very Heavy Rainfall (115.6-204.4
mm) |
Extremely Heavy Rainfall (204.5 mm or
more) |
|
| 2017 | 1824 | 261 |
| 2018 | 2181 | 321 |
| 2019 | 3056 | 554 |
