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Chennai, Oct 18 (IANS) Two low pressure systems are developing simultaneously over the seas around peninsular India, the Indian Meteorological Department (IMD) has said, warning of possible intensification in the next 48 hours.
According to the latest IMD bulletin, a pronounced low pressure area lies over Kumarakom coast and adjoining southwest Bay of Bengal.
At the same time, a cyclonic circulation has been observed over the south-east Arabian Sea and Lakshadweep region at the upper atmospheric level.
Due to this circulation, a new low pressure system is expected to form over south-east Arabian Sea and Lakshadweep by Saturday night.
Meteorologists predict that the system will move west-northwest and may turn into a depression within 48 hours.
Meanwhile, the IMD confirmed that another low pressure area has already formed over the Arabian Sea, which is also likely to strengthen further in the next two days.
Adding to the complex weather pattern, the IMD said a fresh low pressure area is likely to form over the southeast Bay of Bengal on October 24. The system is expected to move west-northwestwards towards the Tamil Nadu coast, possibly intensifying as it approaches the mainland.
Such twin developments – one over the Arabian Sea and the other over the Bay of Bengal – may significantly impact rainfall activity over southern India in the coming days.
In its regional forecast, IMD said that today (October 18), there is a possibility of light to moderate rain and thundershowers over Tamil Nadu, Puducherry and Karaikal.
Heavy rainfall is expected at isolated places in Nilgiris, Coimbatore, Tiruppur, Theni, Dindigul, Erode, Salem, Namakkal and Karur districts.
Due to rough sea condition, fishermen have been advised not to venture into south-east Arabian Sea and adjacent Lakshadweep area. Coastal residents have been urged to remain alert to possible high winds and localized flooding, especially in low-lying areas and river valleys.
Meteorologists say that although these systems are still developing, their combined effect could pave the way for the active phase of the northeast monsoon, which began over Tamil Nadu and Kerala earlier this week.
–IANS
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