It was Thane's Badlapur which bore the brunt with 447mm rainfall -- half of what Mumbai received 14 years ago in 2005. The torrential rain caused rivers Ulhas and Waldhuni in the vicinity to overflow, bringing life to a standstill. The IMD said extremely heavy rains at isolated places were "very likely" over the next 48 hours.

from Times of India https://timesofindia.indiatimes.com/city/mumbai/extremely-heavy-downpour-swamps-thane-region-mumbai-stays-afloat/articleshow/70415691.cms