Simaltaneous withdrawal and onset

[1] SWM is still prevalent in lower latitude.[i.e below 21 Deg North].  The less strengthen SWM winds at upper level form a UAC near Srilanka. 

[2] This UAC is pumping easterlies in to TN region.

[3] This may lead to a formation of low in SE bay.

[4] This is expected to give copious rainfall down south TN.

[5] Two anticyclones along 22 or 21 Deg North  latitude one in the west end  and other in the far east end of India is creeping. up

[6] This may lead to simultaneous withdrawal of SWM and onset of NEM by 22 or 23 Oct 2013.