Posted Wednesday 2nd December Morning...
Meenambakkam 345 mms, Nungambakkam 294 mms and Pudducherry 218 mms....The 24 hrs rainfall in Chennai.
The all time 24 hr highest ever (December) of 262 mms (NGMBKM) mms way back in 1901 is beaten !
Meenambakkam 345 mms is also a 1 day record for December.
Rainfall given below compiled by Pradeep:
Chembarabakkam Lake - 475, Kattankolathur (near SRM University) - 445
Katupakkam (near SRM University) - 429
Thiruporur (near Kelambakkam) - 348, Chennai AP (Meenambakkam) - 345
Korattur Anaicut (Poonamalle) - 336, Puzhal Agro - 325
Redhills Lake - 320, Anna University - 319
Kolapakkam (near Chennai Airport) - 310, Taramani - 300
Puzhal - 294, Chennai City (Nungambakkam) - 294, Cholavaram Lake - 293
Poonamalle - 292, Cheyyur - 289
Palavedu (near Avadi) - 284, Tamaraipakkam - 281
Chithamur (beyond Madurantakkam) - 274, Avadi - 271
Hindustan Unviersity - 260, Madhavaram - 257
Minjur - 231, Ennore - 231
Uthukottai - 226, Poondi Lake - 189, Vembakkam (Near Kancheepuram) - 174
Sriperumbudur Agro - 171
Acharapakkam (beyond Madurantakkam) - 167
Chennai: Mostly cloudy on Wednesday with frequent showers. The intensity could be heavy, but shorter duration. The 24 hr rainfall could be around 50 mms. The sky may show some clearing by evening. Decrease in rainfall on Thursday.Rains may linger on throughout this week though.
Pradeep informs us :"Historic Rains comes to end. 30000 cusecs released from Poondi and 29000 cusecs released from Chembarabakkam"
The formation of the Vortex has weakened, or rather it has to an extent merged in the trough. The Vortex normally remains stagnant as explained earlier.
But, some charters prefer to show the formation as a Low (shown in a chart yesterday on this site).
With a rigid High pressure ridge in the North of the formation, and obstructing the trough, the whole system was "blocked " from moving North. The anti cyclone (again) played a part in the prolonged rainfall over Chennai