Nungambakkam Observatory recorded 36 mm of rains in span of 24 hours from 8:30 am on Wednesday, while Minambakkam Observatory saw 35 mm of rains.
In fact, Chennai has been witnessing spells of rains at regular intervals since morning. Sky has been heavily overcast. According to Skymet Weather, a cyclonic circulation has been prevailing over Southwest Bay of Bengal and trough is extending from this system along the East Coast.
Thus, weather conditions remain favourable for more showers during the next 24 hours, with some heavy spells also in offing for Chennai.
Thereafter, light to moderate rains would continue over the state capital. However, these rains would pick up pace again by November 6-7. This would be on account of another weather system that would form in Bay of Bengal. Not only this, we cannot rule out the possibility of some flooding rains during this time.
October and November are the two rainiest months for Chennai. This year, October ended on a highly deficit note to the tune of 40% for the city. Apart from this, there has been large variation in the rainfall across the city.
For instance, this October, Minambakkam Observatory has been luckier to record 256 mm of rain, while Nungambakkam Observatory received 161 mm.
Normal average rainfall for October stands at 316 mm, this increases substantially to 374 mm in November. However, variations in the rainfall would persist.
2015 saw the rainiest November wherein in rains crossed 1000 mm-mark but November, 2016 was complete opposite that saw mere 50 mm of rain. November in 2017 performed fairly well and recorded almost double the normal rainfall.
This year also seems to be a promising one. One reason could be that this year is likely to be El Niño one, which linked with invariably normal or above normal rainfall during the Northeast Monsoon.
Image Credit:en.wikipedia.org
Any information taken from here should be credited to skymetweather.com