While the India Meteorological Department (IMD) had issued a green alert for Thursday indicating only light to moderate rainfall, Mumbaikars woke up to a steady downpour being witnessed on Thursday in several areas of the island city as well as the suburbs.
By afternnon the rains had once again subsided. The IMD in its 1pm district forecast upgraded the warning for the city and adjoining areas like Thane and Palghar to orange indicating heavy rains likely at isolated places and thunderstorms accompanied with lightning and gusty winds.
The rainfall recorded in the 24 hours of June 3-4 (8.30am-8.30am) by the IMD Colaba observatory was 50mm and IMD Santacruz observatory was 24.8mm but just in the six hours on Thursday between 8.30am-2.30pm the rains recorded by the IMD Colaba and Santacruz observatory was 49.4mm and 42mm respectively. Shubhangi Bhute, scientist at IMD Mumbai, attributed the rains in Mumbai to ‘remnants’ of the cyclone.
Youngsters jump from the water pipeline into the Mithi river at Bandra in Mumbai. Photo: SL Shanth Kumar
“The cyclonic storm Nisarga has weakened into a deep depression which further weakened into a depression over west Vidarbha (Maharashtra) at 5.30pm of June 4. It was expected to move east-northeastwards and weaken into a well marked low pressure area,” said the IMD official.
Mahesh Palawat, vice president of meteorology and climate change from private weather forecasting agency Skymet, said that the intensity of the rains was expected to reduce once the storm made a landfall. “The system was expected to degenerate and move further towards NOrth Madhya Mahrashtra and from thereon towards Bihar. However the outer peripheral wall of the storm remained in the sea because of which the south westerly strong winds pushed the moisture content leading to formation of thunder clouds,” he said.
He also said that the severe cyclonic storm fortunately has not disturbed the monsoon currents. The official date for the onset of monsoons over Mumbai is June 11 and Palawat said that models are indicating that there is unlikely to be much of a delay. “Onset can be expected for the city between June 11-13 as winds continue to stay westerly and monsoon currents have not been disturbed,” he said.