More than half of the month of October has passed, but rains are still continuing in many states. Heavy rains have thrown life out of gear in many states of the country like Delhi, Kerala, Madhya Pradesh and Uttarakhand. These states received heavy rains in the last few days, as a result of which there has been heavy loss of life and property in some places. The rain that Delhi received in the last 24 hours was not seen by the state for many decades. On the other hand, in Kerala and Uttarakhand, rains and then landslides took away the lives of many people. Scientists are looking at combining many reasons behind this. Scientists believe that due to the delay in monsoon and the formation of a low pressure area, many places are witnessing excessive rain.
October is the monsoon season, during which the Southwest Monsoon returns and gives way to the Northeast Monsoon, which generally affects the south peninsular and mainly the eastern part of India.
The Western Disturbance affects the local weather over the remote northern part of India. Because of which it usually rains or snows. High altitude places like Ladakh, Kashmir and Uttarakhand and Himachal Pradesh saw the first snowfall of this season due to this reason. Last week, two high pressure areas (Arabian Sea and Bay of Bengal) became active simultaneously. Due to the meeting of these two together, the weather wreaked havoc in Kerala, Tamil Nadu, Andhra Pradesh, Delhi, Madhya Pradesh, Uttarakhand, Odisha and West Bengal.
The duration of the southwest monsoon is generally four months. By the way, the monsoon returns by the beginning of October. During this, the monsoon rains with thunder and shine, sometimes by giving heavy rains. This year, the withdrawal of Monsoon has started from 6th October, whereas it normally starts from 17th September. So far, Monsoon has completely withdrawn from the regions of West, North, Central and East India.
According to the Indian Express report, it is still active in the southern peninsular region, due to which Kerala, Tamil Nadu, Telangana, Karnataka and Andhra Pradesh are witnessing heavy rains for the last 10 days. Monsoon had not returned from Manipur, Mizoram, Tripura, parts of Bengal, Odisha and entire South Peninsula till Monday.
By mid-October, the direction of monsoon winds shifts from south-west to north-east. In such a situation, the conditions for the onset of North-East Monsoon this year are expected by October 25.
Rain record broken in Delhi
Due to active two pressure areas, rain has been seen over the eastern, western coasts and large parts of central India. Delhi recorded 87.9 mm of rain within 24 hours. It has become the fourth rainiest October since 1901. Not only this, it proved to be the fourth rainiest October so far across the country and this time 94.6 mm of rain was recorded in October. Earlier in October, it recorded 238.2 mm of rain in 1954, 236.2 mm in 1956 and 186.9 mm in 1910.
Similarly, Balasore in Odisha recorded 210 mm of rain in a day. Whereas Tamil Nadu usually receives good rainfall between October and December, but this time it has seen good rains even before the onset of Northeast Monsoon, mainly in Coimbatore 110 mm in a day in the month of October. Rains were recorded which is a record for many decades.
Record breaking rain in Kerala
A low pressure area over East-central Arabian Sea caused rain in Kerala between October 15 and 17. Meanwhile, another low pressure system originated over North Andhra Pradesh Coast and South Odisha. The combination of these two strengthened the south-westerly winds, leading to heavy rains over central and south Kerala. As a result, Idukki, Ernakulam, Kollam and Kottayam districts received up to 200 mm of rain in 24 hours. Most of these districts are hilly and surrounded by forests. Due to the rain, landslides also occurred here and many people got absorbed in the Grass of Kaal.
how long will it rain
The low pressure area that affected Kerala has now weakened, but a similar mechanism is still active over central India. Due to this, there is a possibility of heavy rain in North India this week. Heavy rain is expected in West Uttar Pradesh, Uttarakhand and Himachal Pradesh. Another Low Pressure Area lies over North Odisha and Gangetic West Bengal and combined with Wet East Winds from Bay of Bengal is very likely to cause heavy rains over West Bengal, Odisha, Sikkim and Bihar. Similarly, due to the south-easterly winds rising from the Bay of Bengal, Arunachal Pradesh, Assam and Meghalaya may also receive heavy rains.