Mumbai exceeds average annual rainfall with 50 more monsoon days to go

HT Image
HT Image
Published on Aug 10, 2020 12:25 AM IST
Copy Link
By, Mumbai

The city on Sunday surpassed its annual average rainfall of 2,514mm, despite little rain over the weekend. Mumbai received 2,526mm rain from June 1 to August 9, with 50 more days for the season to end on September 30.

Last year, the city had crossed its annual mean tally on August 25 and received 3,670.2 mm rain over four months. In 2018, Mumbai had not crossed the annual average rainfall mark, with 2,239.6mm rain from June to September. In 2017, the city had recorded 2,946.3mm rain in the entire season.

On Sunday, between 8.30 am and 8.30 pm, no rain was recorded either in the suburbs or south Mumbai. However, the Santacruz weather observatory, representative of the suburbs and Mumbai, recorded 18.4 mm rain over 24 hours (8.30am Saturday to 8.30am Sunday) while Colaba, representative of south Mumbai, recorded 6.2mm of rain.

The weather bureau has issued a yellow alert (heavy rain across isolated areas) for Tuesday, Wednesday and Thursday for Mumbai and Thane. “Weather models have indicated active monsoon conditions over the west coast from August 10-11 onward, with weather factors contributing to enhanced rain activity. Mumbai and surrounding areas are also likely to witness an increase in rain intensity from Tuesday onwards, through the week,” said KS Hosalikar, deputy director-general, western region, India Meteorological Department (IMD).

Independent experts said the city is expected to witness more frequent light to moderate showers in the coming week. “However, there won’t be any severe weather threat until August 14, beyond which there might be some rain enhancement,” said Akshay Deoras, independent meteorologist and PhD researcher at the University of Reading, United Kingdom.

This year, the monsoon onset was declared on June 14. However, it was followed by scattered showers through the month, leading to 395mm of rain for June against its average of 493.1mm, making it the lowest monthly rainfall in five years. However, a contrast in rain activity was witnessed in July, with the month ending with 1,502.7mm rain — it’s highest monthly record since readings began being collated by the weather bureau.

Subsequently, the city and suburbs had both surpassed their seasonal rainfall target on August 5. In the first seven days of August, Mumbai received more rain than it generally receives in the entire month. August rain tally stands at 628.4mm, against mean rainfall of 585.2mm.

IMD classifies 15.6-64.4mm as moderate, 64.5-115.5mm rain as heavy, 115.6-204.4 mm as very heavy, and over 204.5 mm as extremely heavy rain for 24 hours. Through the season, Mumbai (Santacruz observatory) witnessed seven ‘very heavy’ rain days so far (five in July and two in August) with maximum rain recorded between August 3 and 4 at 268.6mm, followed by July 4 and 5 at 200.8mm. Additionally, five ‘heavy’ rain days were recorded, with three in July and two in August.

IMD director-general Mrutyunjay Mohapatra said, “Mumbai’s performance in July was due to factors like the active offshore trough, embedded vortex [localised circulation], and a mid-tropospheric cyclonic system over Gujarat region. However, enhanced rain activity in August was led by the low-pressure system over the Bay of Bengal region and associated weather systems over south Gujarat and the Arabian Sea, which led to intense showers helping the city break rain records.”

Meanwhile, the highest 24-hour rain for weather stations in the Mumbai region was recorded in Colaba between August 5 and 6 at 332mm — the second-highest all-time monsoon rain for the region. This helped south Mumbai cross its annual average rain (2,184.1mm) last week. Rain tally for south Mumbai so far stands at 2,447.2 mm.

Light to moderate rain has been predicted for Monday, and heavy rain across isolated areas is expected from Tuesday onward.


    Badri Chatterjee is an environment correspondent at Hindustan Times, Mumbai. He writes about environment issues - air, water and noise pollution, climate change - weather, wildlife - forests, marine and mangrove conservation

Close Story

Less time to read?

Try Quickreads

  • U.P. sets new record, 16 crore people fully vaccinated against Covid: Govt (PIC for representation)

    U.P. sets new record, 16 crore people fully vaccinated against Covid: Govt

    “Uttar Pradesh has achieved a major milestone by becoming the first state in India to fully vaccinate over 16 crore individuals,” the government said in a press statement on Sunday. Uttar Pradesh is followed by Maharashtra with 16.90 crore doses. The state is expected to cross 34-crore mark in total doses within this week, officials said.

  • Maharashtra rebel leader Eknath Shinde. (File image)

    Maharashtra crisis: Sena initiates legal action against Eknath Shinde and camp

    Amid the ongoing political crisis in the Maharashtra government fuelled by minister Eknath Shinde's rebellion, Shiv Sena MP Arvind Sawant said the party has initiated legal action and served notices to 16 rebel MLAs camping at a luxury hotel in BJP-ruled Assam. A day ago, 16 rebel MLAs, including Shinde, were issued a disqualification notice by the deputy speaker of the Maharashtra Assembly.

  • Lucknow NCB conducts cycle rally to spread awareness against drugs (ht photo)

    Lucknow NCB conducts cycle rally to spread awareness against drugs

    Narcotics Control Bureau, Lucknow Zonal Unit on Sunday organised a mega cycle rally and other events to mark International Day against Drug Abuse and Illicit Trafficking. The chief guest administered an oath against drug abuse to all the participants. He also flagged off the cycle rally. The event saw the participation of various groups, including Lucknow Cycle Club, Robinhood Army, Lucknow Gazelles, Pedal Yatri, Shrijan Shakti Welfare Society, Nawabi Riders and others.

  • File photo of Shiv Sena leader Sanjay Raut. 

    Sena's Sanjay Raut calls rebels ‘living corpses’, has a post-mortem dig too

    Shiv Sena spokesperson Sanjay Raut on Sunday called the rebel lawmakers camping in BJP-ruled Assam “living corpses” and said souls were dead. Stating that the bodies of the 40 MLAs, led by dissident party leader Eknath Shinde, will be sent directly to the Assembly for post-mortem when they come back. Shinde's rebellion, with tacit help from the BJP, has triggered a survival crisis for the Uddhav Thackeray-led coalition government in Maharashtra. NCP supremo Sharad Pawar said in Delhi.

  • Technical staff checks the helicopter of Uttar Pradesh Chief Minister Yogi Adityanath following its emergency landing after it hit a bird, in Varanasi, Sunday. (PTI)

    UP CM’s helicopter suffers bird-hit, makes emergency landing in Varanasi

    UP chief minister Yogi Adityanath's helicopter made an emergency landing, at the Reserve Police lines ground in Varanasi after it suffered a bird-hit on Sunday. The CM had arrived in Varanasi on Saturday evening for a review meet. Around 9.05am, on Sunday, he reached the police lines ground and boarded a helicopter for Lucknow. He later boarded a state plane to Lucknow from Varanasi's Lal Bahadur Shastri International airport.

Story Saved
Saved Articles
My Reads
Sign out
New Delhi 0C
Sunday, June 26, 2022