India Met Department has forecast four days of heavy to very rains for Tamil Nadu, Puducherry and coastal Andhra Pradesh from tomorrow (Friday).
Satellite pictures this morning showed an advance batch of clouds having penetrated the North Tamil Nadu coast after travelling hundreds of km from South Andaman Sea.
It is here that a low-pressure area is expected to form in the next 24 hours, an India Meteorological Department update informed this morning.
Meanwhile, the clouds have spread as far apart over land as to Salem, Dharmapuri, Krishnagiri, Tirupattur, Tiruvannamalai, and closer to coast in Cuddalore, Puducherry, Mahabalipuram, Kanchipuram, and Sriprumbudur.
A passing shower or two is the forecast for Chennai today before they grow into sustained rain and thundershowers from tomorrow, according to forecasts.
An India Met update had to say the following in its outlook for four days from tomorrow:
Heavy to very heavy rain
Today, Thursday: No weather warning.
Friday: Heavy rain at isolated places over coastal Tamil Nadu, Puducherry and Andaman and Nicobar Islands.
Saturday: Heavy to very rain at isolated place over coastal Tamil Nadu and Puducherry and heavy over south coastal Andhra Pradesh and Andaman and Nicobar Islands.
Sunday: Heavy to very heavy rain at isolated places over coastal Tamil Nadu and Puducherry and heavy over coastal Andhra Pradesh and Andaman and Nicobar Islands.
Monday: Heavy to very rain at isolated places over Coastal Tamil Nadu and Puducherry and Coastal Andhra Pradesh.