After sunny Monday, IMD revises Mumbai rains forecast again | mumbai news | Hindustan Times
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After sunny Monday, IMD revises Mumbai rains forecast again

Last Monday, the IMD had said the north Konkan region, which includes Mumbai, could witness heavy to very heavy rain with isolated extremely heavy rainfall from June 8 to 10.

mumbai Updated: Jun 12, 2018 11:19 IST
Badri Chatterjee
Badri Chatterjee
Hindustan Times
sunny weather,Mumbai rain,Mumbai rain forecast
On Sunday, south Mumbai recorded 0.8mm rain while 0.5mm rain was recorded in the suburbs.(HT File)

Contrary to the revised forecast by the weather bureau, Mumbai stayed sunny through the day on Monday, with light rain in the evening.

Last Monday, the India Meteorological Department (IMD) said the north Konkan region, which includes Mumbai, could witness heavy to very heavy rain with isolated extremely heavy rainfall from June 8 to 10. It also asked citizens to avoid going outdoor over the weekend. While Mumbai and surrounding areas received heavy to very heavy rain on Saturday, there was negligible rain on Sunday. The bureau then revised its forecast for Monday to a few spells of rain and thundershowers.

From 8.30am to 5.30pm on Monday, Colaba recorded 0.4mm rain, while Santacruz received drizzles. At 33 degrees Celsius, the day temperature was three degrees above normal, while the night temperature was 28 degrees Celsius, 1.5 degrees above normal. The weather bureau re-revised its forecast on Monday evening. “One or two spells of rain and thundershower over the city is expected over the next 48 hours [from Monday],” the forecast read.

“The major monsoon activity has shifted from the west coast to the eastern part of the country as a result of cyclonic circulation (weather system) over the Bay of Bengal,” said KJ Ramesh, director general, IMD. “Now, moderate to isolated heavy rain is expected along the Konkan coast, but Mumbai can expect light to moderate rain.”

“Globally, mega cities have weather models that issue accurate rain warnings from a day to a few hours in advance. IMD needs to adjust its model,” said Johnny Joseph, who was the municipal commissioner in 2005, when Mumbai flooded after receiving 944mm rain in more than 24 hours. “We are running weather models twice a day to understand the variability of the monsoon. As soon as we realised the change, we issued warnings and revised them,” said Ramesh.

“From June 12, a high pressure will build up over the north Arabian Sea. It will push dry air from the Gulf countries towards India, killing the rain,” said Akshay Deoras, independent meteorological advisor to the government. Meanwhile, the IMD said the monsoon arrived in Buldhana, Amravati, Nagpur and Gondia on Monday.