India Meteorological Department warned about heavy rain over Mumbai. Though it didn’t rain on 18th Sept 2017 but the situation still persists to give very heavy rain and even extremely rain likely. Though the amount of rain has nothing to do with the flooding since any amount of rain is sufficient to flood any portion of the city. It’s evident from the fact that 26th July 2005 rain of 944 mm in Mumbai was felt equivalent to 29th August 2017 rain.
The present weather situation shows the circulation near Mumbai and it can be in grip of heavy rainfall event anytime starting from today till tomorrow.
Read more about this at Heavy Rain About To Pour As Circulation Hovering Around Mumbai
See below the position of the circulation (Source: Weatherview.in)
Satellite Picture Source: IMD