Torrential monsoon rains lashed the megapolis and its neighbouring areas, flooding streets, rail tracks and crippling life in the city.
The downpour—the highest of the season so far in a day -- caused traffic jams as many roads and streets were flooded and people were seen wading through knee-deep water.
Vehicles on many roads were seen crawling because of the rain and low visibility, while potholes compounded the problem. Several schools declared a holiday on Monday and many office-goers decided to stay at home.
Suburban trains were running late by five to 15 minutes due to water-logging on rail tracks in some places.
According to a Western Railway official, movement of trains on some tracks, which got submerged, had to be stopped but services continued on other tracks with restricted speed. There was also heavy water-logging in the central areas of Kurla, Sion and Dadar.
Mira Road (in adjoining Thane district), and Nallasopara and Vasai (in Palghar district) were largely affected due to the heavy showers.
“It is the highest rainfall of the season so far in 24 hours,” said IMD Mumbai’s deputy director general KS Hosalikar
Trains under Central Railway were moving slow, but no service was cancelled, an official said.
Brihanmumbai Electric Supply and Transport (BEST) buses were slightly delayed, but no service was cancelled or suspended, a BEST spokesperson said.
The city's neighbouring areas got even more rains, and roads were submerged.
Visibility at the Mumbai airport was "not very good" but flights were operating according to schedule, an MeT official said, adding no warning has been issued for the aviation sector so far.
The meteorological department has forecast more heavy rains in Mumbai till Tuesday.
The Colaba observatory in south Mumbai recorded 170.6 mm rainfall in the last 24 hours (from 8.30 am yesterday), an official of the India Meteorological Department (IMD) said.
"It is the highest rainfall of the season so far in 24 hours," said IMD Mumbai's deputy director general K S Hosalikar.
The observatory in suburban Santacruz recorded 122 mm showers during the same period, he said, adding, "The city and its suburban areas received a good spell of showers yesterday. Mumbai got a widespread downpour as the rain intensity escalated to very active." Hosalikar said the intensity of rains in the city's neighbouring districts of Palghar, Raigad and some parts in the south Konkan region was even more "vigorous" with these areas receiving 200 mm rainfall since yesterday.