It is presently seen as a low pressure area marked over southern parts of Andaman and Nicobar Islands.
According to Skymet Weather, the system is moving in warm sea surface temperatures, which is favourable for its further intensification during the next 24 hours. Moreover, it is travelling at a very slow pace, thus likely to get more time for strengthening.
As per weathermen, it may intensify into a low pressure area but we need to wait and watch. At present, the system will bring moderate to heavy rains and thundershowers over Andaman and Nicobar Islands.
Besides this, it is likely to follow the same route as the earlier four weather systems developed in Bay of Bengal. Out of these four, three systems had concentrated into cyclonic storms of varying intensity (Cyclone Kyant, Cyclone Nada and Cyclone Vardah), while one intensified into depression.
Thus, initially it is most likely to shift west-northwestwards and thereafter in west direction towards Tamil Nadu coast near Chennai.
Rain in Chennai
All these systems have given good rainfall over Chennai. In fact, the latest one Vardah had battered Chennai with heavy to extremely heavy rains. So far, Chennai has recorded 329 mm of rain, surpassing its monthly average of 191 mm
Similarly, this system will also start giving rains in Chennai from the evening of December 18. The intensity will increase on December 19 and we can expect some moderate rains and thundershowers over the city.
Image credit: Indian Express
Any information taken from here should be attributed to skymetweather.com