Weather analysis for TN&Puducherry Focussing on Equatorial Waves Life Member of Indian Meteorological Society Research Scholar (IIT Madras)
Chennai, TN, India
Joined August 2020
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Continuation
This system would Mostly move towards South AP as of now around 2/11 to 3/11. As of now North TN can expect Moderate to Heavy rain from 1/11 night to 3/11 (#Chennai ) (not yet clear).
Need to monitor carefully
Pic credits Australian Met Bureau, Tropic Ssec, Ncmrwf
Performance of October 2026 Rain in TN&Puducherry
TN&Puducherry Actual 217.7mm vs Normal 171.6mm (+27%)
Chennai Actual 269.8mm vs Normal 274.5mm (-2%)
Rainfall for other dts are given below
Pic credits Imd
#Chennai
*AnushWeather*
Rainfall recorded 30/10/26 0mm(12am to 11:59pm):
(Velachery Chennai)
#Chennai #ChennaiRains
*AnushWeather*
Rainfall recorded 29/10/26 0mm(12am to 11:59pm):
(Velachery Chennai)
#Chennai #ChennaiRains
Friday Special Update (30/10/26)
Currently Low Pressure is near South Andaman. Also dip in Subtropical Jet Stream is near Gujarat (30/10).
This dip is likely to remain Mostly till 2/11 in India.
ER wave is likely to stay till 4/11, Kelvin is likely to come around 3/11
Continued
*AnushWeather*
Rainfall recorded 28/10/26 0mm(12am to 11:59pm):
(Velachery Chennai)
#Chennai #ChennaiRains
Continuation
Two scenario:
If the system comes close to TN coast before 1/11 then Coastal TN&Puducherry can expect good rains
If it doesn't come close to TN coast before 1/11 it would move towards Central AP
Pic credits Ncmrwf, Misva
Wednesday Update (28/10/26)
Currently MJO is in Indian Ocean. Around 31/10 we could expect ER in Indian Ocean (MJO doubtful), Kelvin wave around 3/11
A circulation would form near South Andaman around 29/10. We could expect dip in subtropical jet stream around 1/11
Continued
Rainfall recorded in TN today (28/10/26)
Perunchani 41.8mm
Suralacode 41.4mm
Chittar I 33.6mm
Pic credits Tnsmart
*AnushWeather*
Rainfall recorded 27/10/26 0mm(12am to 11:59pm):
(Velachery Chennai)
#Chennai #ChennaiRains
Anush Weather retweeted
Due to Cyclone Arnab Storm Surge effect in Ennore North Chennai #CycloneArnab
Rainfall recorded in TN (27/10/26)
Kodiyakarai 52.6mm
Vedranyam 44.7mm
Velankanni 43.2mm
Pic credits Tnsmart
Very Severe Cyclone Arnab is close to Coastal Andhra Pradesh. Windspeed has touched 115kts which is 213kmph (massive). No effect for Tamil Nadu.
Pic credits Tropic Ssec, Rammb, Imd
#ArnabCyclone #CycloneArnab
*AnushWeather*
Rainfall recorded 26/10/26 0.5mm(12am to 11:59pm):
(Velachery Chennai)
#Chennai #ChennaiRains
Rainfall recorded in TN today (26/10/26)
Kothavachery 145mm
Madukkarai 130mm
Vaarapatti 128mm
Thangachimadam 119mm
Podanur Railway Station 118mm
Pic credits Tnsmart
#Coimbatore
*AnushWeather*
Rainfall recorded 25/10/26 13.2mm(12am to 11:59pm):
(Velachery Chennai)
#Chennai #ChennaiRains
Continuation
Circulation near Andaman would move towards Central Andhra Pradesh around 27/10 as Depression or Cyclone Arnab
TN can expect Dry weather from 27/10
Moderate to Heavy rain in Chennai till 26/10
Pic credits Ncmrwf, NCICS, Tropic Ssec
#Chennai
Sunday update (25/10/26)
Currently (23/10 Eq Wave statusER is in East Indian Ocean, Kelvin in west Indian Ocean, MJO is in Indian Ocean
One circulation is in TN another North of Andaman Islands
Moderate to Heavy rain is possible in TN&Puducherry till 26/10
Continued
