MUMBAI, June 25 -- After a delay of nearly two weeks, the monsoon finally announced its arrival with force, unleashing an intense overnight downpour that flooded roads, uprooted trees, disrupted traffic and exposed the city's monsoon preparedness to heavy rain barely a day after the India Meteorological Department (IMD) declared the onset of the monsoon over the city. The rain spell between Tuesday night and Wednesday morning triggered a series of civic emergencies across Mumbai and ignited a political slugfest over the city's monsoon preparedness, even as the Brihanmumbai Municipal Corporation (BMC) insisted that transport networks and essential services largely remained operational. According to the BMC's disaster management department, several parts of the city received more than 200mm of rainfall within 24 hours, while some locations crossed the 300mm mark. During the 24-hour period ending at 8am on Wednesday, Colaba recorded 248mm of rainfall, nearly 45% of its June average of 542mm, while Santacruz received 225mm, accounting for about 42% of its monthly average of 537mm. Data from the BMC's network of automatic weather stations showed that the island city received an average of 195mm rainfall, the eastern suburbs 167mm and the western suburbs 208mm, making the latter the worst-hit region. Like every year, waterlogging was reported from several low-lying and flood-prone areas, including King's Circle, Dadar TT, Gandhi Market, Sion Circle, Kurla, Chembur, Mankhurd, Dahisar, Borivali, Kandivali, Malad, Goregaon and Andheri, slowing traffic and inconveniencing commuters through much of the morning. In Powai's Milind Nagar, frustrated residents staged an unusual protest after their neighbourhood was inundated. Sitting in waterlogged streets, they raised slogans against the BMC, alleging years of civic neglect. Civic officials maintained that emergency response mechanisms functioned effectively despite the intensity of the rainfall. More than 7,000 officers and employees were deployed across the city, while pumping stations were activated at key locations to expedite drainage and clear accumulated water. The downpour also triggered 70 electrical short-circuit incidents across Mumbai, 37 in the island city, 18 in the eastern suburbs and 15 in the western suburbs. Authorities received 113 complaints of fallen trees and branches, nearly half of them from the western suburbs. Seven incidents involving partial collapse of houses or structural elements were also reported. No casualties were recorded. Municipal commissioner Ashwini Bhide visited the BMC's Disaster Control Room at the civic headquarters at 4:30am to review the situation, while disaster management chief Mahesh Narvekar remained at the control room from 2am onwards to monitor the evolving weather conditions. Mumbai mayor Ritu Tawde also inspected several vulnerable locations. With concerns mounting over rapidly declining reservoir levels and estimates suggesting that only 40 to 45 days of drinking water remained, Wednesday's rainfall boosted storage in the city's seven lakes by nearly two percentage points. According to BMC data, the reservoirs collectively held 114.8 billion litres of water against a total capacity of 1.44 trillion litres, taking overall stock levels to 7.94%. Heavy rain was not limited to Mumbai. Navi Mumbai received around 200mm of rainfall in the 24 hours ending Wednesday. In neighbouring Raigad district, authorities shut the historic stairway route to Raigad Fort for two days after a rockfall near the Mahadarwaja triggered by incessant rain....