MUMBAI, July 5 -- The city witnessed one of the season's heaviest spells of rain on Saturday, with the red alert issued by the IMD set to continue till 8.30 am on Monday. With many locations logging over 200 mm to 250 mm of rainfall, the relentless downpour triggered widespread waterlogging, traffic disruptions, road closures, tree falls and a major road cave-in in Bhandup. However, despite the deluge and chaos across the city, no rain-related fatalities were reported. The BMC, citing the red alert, declared a holiday for all schools and colleges for the afternoon session and urged citizens to step out only if absolutely necessary. Sushma Nair, senior scientist at IMD, said the intensity of the rain was not unusual for July. "Weather systems such as low-pressure areas and shear zones do form in July, and the quantum of rain is in alignment with these. In previous years, we have seen more than 250 mm to 300 mm of rain on a single day in July," she said. P5...