|15.10.2013 /15Z upper wind|
|15.10.2013 / 12Z lower wind|
SW [to] Westerly [to] NW [to] Northerly and then to NEly is the reversal pattern. However the reversal sometimes may occur very rapidly. The prolonged SWM may lead to frequent formations of low / depressions / cyclones in the Bay and indirectly help to boost NEM rainfall.
What ever it may be we are getting rainfall.