The India Meteorological Department’s Santacruz observatory, representative of the suburbs and Mumbai, had recorded 268mm of rain in the 24-hour period ending Tuesday 8am and 162mm of rain in a 24-hour span ending Thursday 8am—together they had contributed to over 70% of the normal average August rain.
The prevailing weather conditions that gave Mumbai and its adjoining areas these intense showers, weathermen said, were due to a wellmarked low pressure area, a cyclonic circulation over south Gujarat and neighbourhood at lower tropospheric levels and strong south westerly/westerly monsoonal flow over Arabian Sea.
Friday saw some respite from the heavy spells. In the 24-hour period ending Friday 8.30am, the IMD Colaba observatory recorded 25.2mm of rain and the IMD Santacruz station 79.2mm. And Mumbaikars can expect further relief as the IMD has forecast light to moderate rain for Saturday, Sunday and Monday in parts of the city and adjoining Thane. The break, however, may be short lived as heavy rain at isolated places is expected on Tuesday (August 11).
“Over the 24 hours from Thursday to Friday, parts of Mumbai, Thane Navi Mumbai received moderate to heavy rain. However, the rain intensity in the suburbs and adjoining areas, like Navi Mumbai, was more. From August 10-11 again a further increase in rain is possible,” said K S Hosalikar, deputy directorgeneral (western region), IMD.
Meanwhile, on Friday, the total water stock in the seven catchment area lakes which cater to Mumbai was 6.7 lakh million litres (46% of the total required quantum)—a 5% rise from Thursday as big lakes like Modak Sagar and Middle Vaitarna finally saw rainfall in triple digits. The total required water stock is 14.5 lakh million litres by October 1 for the city to go without a water cut for the rest of the year.