The low pressure area has formed in Southwest Bay of Bengal and has taken the westward route resulting in rains over many parts of Tamil Nadu in the last 24 hours. In fact, three digit rains have also lashed the coastal parts of Tamil Nadu with heavy showers in Kerala and Andaman and Nicobar Islands.
During the last 24 hours from 8:30 am on Thursday, Tuticorin in Tamil Nadu witnessed 274 mm of rains, Nagappattinam saw 187 mm of rains, Karaikal in Puducherry 123 mm, Palayamkottai at 107 mm, Port Blair at 75 mm, Minambakkam observatory of Chennai at 72 mm, Cuddalore 70 mm, Madurai 53 mm, Thanjavur 53 mm, and Thiruvananthapuram 65 mm.
These rains are due to the low pressure area over Bay of Bengal, which is now off the Tamil nadu Coast. As per weathermen at Skymet Weather, in the coming three days or so, heavy to very heavy rains are expected in many parts of Tamil Nadu and adjoining areas. Parts of Coastal Andhra Pradesh are also expected to see some hefty showers.
Rainfall activity is likely to be seen in the interior areas as well including Kerala, South Interior Karnataka, Rayalaseema etc. However, these showers will not be very heavy in nature.