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2020 Could See More Intense Cyclones, Colder Winter Due To La Nina

Indiatimes logo Indiatimes 4 days ago Bobins Abraham

South India, Goa and Maharashtra are experiencing heavy to very heavy rains for the past few days under the influence of a depression over the Bay of Bengal which intensified into a deep depression on Monday.

a group of people in a boat on a body of water: Cyclone © Provided by Indiatimes Cyclone BCCL

Another low pressure over south-central Maharashtra and south Konkan is likely to move over the Arabian Sea and intensify into a depression in the next 48 hours, the India Meteorological Department (IMD) said.

Heavy rains expected

Under the influence of this cyclonic circulation, heavy rains are expected over the ghat areas of Maharashtra, Konkan and south Gujarat during the next two days, the IMD said.

a view of a city: Cyclone © Provided by Indiatimes Cyclone BCCL

Deep depression is a stage below any cyclonic circulation intensifies into a cyclone.

This is more not good news for the country as October-November is peak cyclone season in India and usually, it witnesses the formation of cyclones over the Bay of Bengal that batter the eastern coasts, especially Odisha and Andhra Pradesh.

The Bay of Bengal and the coastal regions could face some intense cyclones this year, the Indian Meteorological Department has said.

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India Meteorological Department chief M Mohapatra said that there could be a higher frequency of intense cyclones over the Bay of Bengal due to La Nina, which could also result in colder winters this time.

Climate change affecting us

He said there should not be an impression that climate change leads to rise in the temperature, but on the contrary, it leads to erratic weather.

a flock of seagulls standing on a rock next to a body of water: Cyclone © Provided by Indiatimes Cyclone BCCL

"As weak La Nina condition is prevailing, we can expect more cold this year. The El Nino and La Nina conditions play a dominant role if you consider the large scale factor for the occurrence of cold wave conditions," Mohapatra said.

He was addressing a webinar on 'Cold Wave Risk Reduction' organised by the National Disaster Management Authority (NDMA). 

"La Nina conditions are favourable for cold wave conditions, while El Nino conditions are unfavourable for it," he added.

Mohapatra said Rajasthan, Uttar Pradesh and Bihar are among the states that mostly see deaths due to cold waves.

Winter © Provided by Indiatimes Winter BCCL

The IMD also releases a winter forecast every year in November which gives predictions on the severity of the winter season starting December to February.

Colder winters

La Nina is related to the cooling of the Pacific waters, while the El Nino is linked to its heating. Both factors are also believed to have an impact on the Indian monsoon.

For instance, 2020 witnessed an above normal monsoon with nine per cent excess rainfall. The winter season last year had long spells of cold waves.

Last week the IMD said it will release dynamic and impact-based cyclone warnings for districts this season to minimize economic losses and damage to property due to the intense weather system.

a house that has a sign on the side of the street: Cyclone © Provided by Indiatimes Cyclone BCCL

Under the system, location or district-specific tailored warnings, which factor in the local population, infrastructure, settlements, land use and other elements, will be prepared and disseminated.

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