Northeast Monsoon Onset Expected around Oct.28 – IMD

Yesterday saw many parts of Chennai receive moderate rains as a prelude to Northeast Monsoon onset.  While the IMD observatory in Nungambakkam received 15 mm rains, Taramani received 22 mm & Madhavaram Agro received 21 mm during the spell of rains in the afternoon bringing down the temperature to about 25°C

IMD yesterday have confirmed Northeast Monsoon could possibly onset around 28th October, to quote “Under the influence of Easterly Wave, increase in rainfall activity over Tamil Nadu and adjoining South Peninsula from 27th onwards”

Conditions are getting better for  Northeast Monsoon Onset with a Fresh Low expected over South Bay around 26th October.  While there is some ambiguity on how this tropical disturbance could evolve in the days to come this could potentially bring in much needed rains across most of Tamil Nadu starting from early next week.  Coastal Tamil Nadu could see fairly wide spread rains coinciding with the Monsoon Onset.


In the meanwhile parts of South Tamil Nadu & South Kerala could see heavy spells of rains under the influence of the Upper Air Cyclonic Circulation off Sri Lanka. The districts of Thoothukudi, Tirunelveli & Kanyakumari could potentially see heavy spells of rain in a few places.  Saturday early morning could see rains in the Coastal areas of the Delta region getting some rains.  The stretch between Pondy and Rameswaram could see one or two places getting fairly intense rains.

Chennai Weather Update: Chennai could see isolated early morning showers in one or two areas.  Day time temperatures could be around 33°C with mostly pleasant conditions prevailing.