Rain reigns in Mumbai
The city witnessed this season’s wettest day on Monday as it received an average rainfall of 134mm between 8am and 8pm.mumbai Updated: Sep 04, 2012 00:53 IST
The city witnessed this season’s wettest day on Monday as it received an average rainfall of 134mm between 8am and 8pm.
But it brought its share of problems — several commuters were delayed as 30 trains were cancelled on the Western line and at least eight Central Railway services were cancelled. Complaints of waterlogging, tree falls, wall collapses and traffic snarls were pouring in from across the city.
According to the BMC disaster control cell, the eastern suburbs recorded the maximum average rainfall —157mm — followed by 144mm of rain in the western suburbs and 101mm rain in the island city.
According to the IMD, a strong offshore trough that aids cloud formation developed on either side of the coast over the Arabian Sea in the west and the Bay of Bengal in the east, resulting in heavy rain in Mumbai and other parts of the state.
“The satellite imagery and radar images show that a very strong upper-air cyclonic circulation brought heavy rainfall. We can expect heavier rain in the next 24 hours,” said VK Rajeev, director, IMD, western region. “But it will be difficult to cover up the seasonal deficit.”
Medha Kolhe, deputy director-general, weather forecasting, IMD, Pune, said the monsoon’s late flourish would not abate for now as its withdrawal was delayed by a week.
Experts attributed the heavy rain to a climate model called Indian Ocean Dipole (IOD), the difference between sea surface temperature in the western and eastern equatorial Indian Ocean.
“A positive IOD, which is prevailing now, is marked by warmer than normal water in the western equatorial Indian Ocean. It favours monsoon systems on India’s west coast,” said DS Pai, director, long-range forecasting division, IMD, Pune.
“The positive IOD neutralises the impact of El Nino that suppresses the monsoon in the south Pacific Ocean. Despite the rain now, we expect El Nino to prevail and sustain the deficiency in September.”