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After the complete departure of the south-west monsoon from the country, now contradictory weather patterns are being seen in two different parts of India. While rosy cold and dry weather in the morning and evening has spread in North India, the weather conditions in South India are once again going to deteriorate rapidly. According to the latest bulletin of the Indian Meteorological Department (IMD), due to the impact of the cyclonic circulation forming over the Bay of Bengal and the Arabian Sea and the upcoming activities of the North-East Monsoon, a new round of torrential rains is going to start in the peninsular part of South India. An alert of heavy to very heavy rainfall with strong winds has been issued in many districts of Tamil Nadu, Puducherry, Kerala and Karnataka till October 25-26. On the other hand, amidst the increasing air pollution and smog in Delhi-NCR, people are asking the question when will the sky-clearing rains occur in the national capital.
According to meteorologists, due to the cyclonic depression over the south-east and east-central Bay of Bengal, a huge amount of moisture from the sea is moving towards the coastal areas of Tamil Nadu and Andhra Pradesh. Along with this, the trough is also active in the south-eastern part of the Arabian Sea. Due to the meeting of these two systems, a huge structure of clouds is being formed, due to which the incidents of thunderstorms and lightning have suddenly increased in the South Peninsula.
IMD says this seasonal change is a precursor to the normal onset of Northeast Monsoon. There is a possibility of gusty winds at a speed of 40 to 50 kilometers per hour in the southern states for the next 4 to 5 days and high waves in the sea in the coastal areas.
Tamil Nadu will see maximum weather impact during the next three to four days. Dense cloud cover and several rounds of torrential rain are expected in the delta districts including the capital Chennai, Kanchipuram, Chengalpattu, Tiruvallur, Villupuram, Cuddalore and Nagapattinam.
IMD has given orange alert of ‘heavy to very heavy’ rainfall at some places. Incessant rains may cause waterlogging and serious traffic problems in low-lying urban areas like Chennai and Madurai. Fishermen have been strictly advised to stay away from the coasts of Tamil Nadu, Puducherry and Gulf of Mannar.
The weather has completely changed in Kerala also. Heavy rain and lightning is expected in Thiruvananthapuram, Kollam, Pathanamthitta, Alappuzha, Kottayam, Idukki and Ernakulam districts. Especially in the hilly areas of Idukki and Wayanad, the risk of landslides may increase due to continuous rains, for which the local administration has been asked to keep disaster management protocols active.
At the same time, there are chances of intermittent heavy rains in the southern interior parts of Karnataka, including Bengaluru, Mysuru, Hassan and Chamarajanagar. The weather in Mangalore and Udupi of coastal Karnataka will also remain moist and stormy due to sea winds.
Unlike the south, the sky remained mainly clear and the weather remained completely dry in the national capital Delhi, Noida, Ghaziabad, Gurugram and Faridabad. There is bright sunshine during the day while the minimum temperature is being recorded around 18 to 20 degrees Celsius at night and early morning.
Regarding the possibility of rain in Delhi, the Meteorological Department has clarified that a weak ‘Western Disturbance’ may become active in North-West India around 23-24 October. With its effect:
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Partial changes on 24th and 25th October: Light movement of clouds may be seen in some areas of Delhi-NCR, Punjab and Haryana during October 24 and 25 and isolated/scattered drizzle may be recorded at some places.
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No chance of heavy rain: There is no forecast of any large scale heavy or heavy rain in Delhi. The weather will remain mainly dry.
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Effect on temperature and cold: After October 25, due to intensification of north-westerly winds, the night temperature in Delhi will drop further by 2 to 3 degrees, which will increase coolness at night and light haze and smog may spread in the morning.
Due to the ongoing heavy rains in South India, farmers engaged in harvesting paddy and other Kharif crops have been advised to keep the harvested produce in safe warehouses or covered with tarpaulins. At the same time, residents of Delhi-NCR have been advised that due to no rain and slow wind speed in the coming days, the pollution level (AQI) may go from ‘poor’ to ‘very poor’ category, hence respiratory and allergy patients should use masks in the morning. Passengers traveling to South India have been instructed to leave only after checking the latest schedules of flights and trains.