A rain-bearing low-pressure area is in the process of crossing over from the Gulf of Thailand/Malay peninsula into the Indian waters, with one foot already in the Andaman Sea on Tuesday.

The cross-over should get completed by Wednesday following which the ‘low’ would undergo a round of intensification, an India Met Department (IMD) outlook said.

Follow-up ‘low’ Ahead of this, an existing trough over West-Central Bay of Bengal weakened, and shifted south-west to lie as a trough from west of Sri Lanka to East-Central Arabian Sea across the Lakshadweep Islands.

This trough formation brought heavy rains to Kerala on Tuesday, and threatened to wash out the third T20 match and series decider between India and New Zealand scheduled to be held at the Sports Hub at Karyavattom near here.

Meanwhile, the IMD has also indicated that a follow-up ‘low’ would take shape over South Bay of Bengal, whose disruptive influence in the rear may not allow the existing ‘low’ over the Andaman Sea to achieve storm strength.

But the former would bring rain to the Tamil Nadu coast, especially the southern parts, as well as Sri Lanka later this week.

The level of strength being achieved and and track taken by the latter would bear some watching.

Rain may get redirected The European Centre for Medium-Range Weather Forecasts shows a rudimentary cyclonic circulation from the first ‘low’ reaching the Puducherry coast by November 14.

It would be followed by the next day or so by a conventional low-pressure area from the successor, larger in size and positioned off the Chennai coast, and looking to the Andhra or Odisha coast for onward movement.

In its forecasts for Wednesday, the IMD said that heavy rains are likely over isolated places over the Andaman & Nicobar Islands and South Tamil Nadu.

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