Rains commenced on a good note over Tamil Nadu in the beginning of October on account of Cyclone Titli and almost double of normal rains were recorded during the first half of the month. However, during the second half of October, rains reduced significantly, and Tamil Nadu’s rain surplus got consumed fully.
Similar to October, the month of November also started on a good note in terms of rainfall activity. In fact, on November 1, the state recorded 20% surplus of rains, followed by 62% on November 2 and about 214% on November 3. As of today, Tamil Nadu is rain deficient by 11% for the season.
However, since the last 2 days, rain have reduced significantly over Tamil Nadu and only light to moderate rains are being observed. During the last 24 hours as well, light rains with one or two moderate spells were recorded.
In the last 24 hours from 08:30 am on Monday, Thoothukudi and Pamban recorded 13 mm of rain, followed by Tiruvallur 7 mm, Kanchipuram and Kanyakumari 4 mm, Thondi and Meyyur 3 mm and Chennai 1 mm.
The low-pressure area over Southwest Bay of Bengal has now intensified into a well-marked low-pressure area and is seen over Southwest Bay of Bengal and adjoining India Ocean off Sri Lanka Coast. This system is further likely to move west/northwestwards over Gulf of Mannar and lie close to the proximity of South Tamil Nadu Coast.
In wake of this, we expect rains to revive over the entire state of Tamil Nadu. The southern parts will witness heavy rains and the central parts will experience moderate showers. However, the northern and interior parts of Tamil Nadu will observe light rains with one or two moderate spells.
Furthermore, as another weather system is likely to come up in Bay of Bengal. Therefore, between November 12 and 14 Tamil Nadu will again experience a rainy spell where in heavy rains will be witnessed.
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