By Thursday, the depression may intensify  deep over coastal Andhra

The meteorological sub-region of Tamil Nadu, Puducherry, and Karaikal is currently under heavy rain as a depression over the southeast Bay of Bengal and adjoining Andaman and Nicobar Islands threatens to intensify on Wednesday. As expected, the system may push in a more distant path, intensify, and head towards Odisha.

   Deep depression    

The India Meteorological Department (IMD) said that a depression has formed over the West Central Gulf, which may move west-northwest and intensify as a deep depression (transition) over the Andhra Pradesh coast by Thursday and reappear northeast to the north-west of the Gulf near Odisha. on the coast on Friday. Even if the system has existed, it may open the Tamil Nadu coast to successive shocks from rain-driven easterlies or circulations, according to the short-term perspective.  

 Another upper-air cyclonic circulation in the southwest Gulf and neighboring Sri Lanka is also seen contributing to the immediate cause of Tamil Nadu on Tuesday. A trough runs from this cyclonic circulation into a low-pressure area. It can maintain a presence in the area despite the intensification of the “low” and away movement like depression.    

 Heavy rain warning

    According to the rainfall warning issued by the IMD, several parts of coastal areas of Tamil Nadu, Puducherry, and Karaikal will experience light to moderate rain with isolated heavy to very heavy and isolated very heavy rain on Tuesday and Wednesday. Light to moderate rain and isolated showers are also likely over coastal  Andhra Pradesh on both days, though only a moderate increase may occur in the interior of both regions.

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