As Monsoon arrives in Delhi, Mumbai simultaneously after 62 years, heavy rain prediction in these cities

In a first in the last six decades, Delhi and Mumbai saw the arrival of monsoon on the same day on June 25, 2023. According to the India Meteorological Department (IMD), the monsoon arrived two days ahead of schedule in Delhi, while Mumbai's onset was delayed by 14 days, culminating in an unprecedented synchronized arrival.

Monsoon Hitting Mumbai, Delhi Simultaneously for the First Time in 62 years

For the first time since June 1961, the monsoon arrived inMumbai and Delhi on the same day. This unique meteorological event is drawing the attention of climatologists and weather experts. This simultaneous arrival is an exceptional occurrence considering the geographical distance and different climatic zones of the two cities.

Historically, the monsoon hits Mumbai on the west coast before it progresses to the northern parts of the country, including Delhi. This year, however, due to various atmospheric conditions and climate phenomena, both cities are experiencing monsoon showers at the same time. This has led to disruptions in daily life due to waterlogging and traffic jams, but also relief from the summer heat.

Cyclonic Circulation Over Bay of Bengal

This unusual weather pattern has been partly attributed to the cyclonic circulation developing over the Bay of Bengal. The Bay of Bengal is known to be a significant birthplace for many of the devastating cyclones that hit the eastern coast of India. The cyclonic circulation over the Bay of Bengal this time has caused an increased moisture inflow towards the Indian mainland, contributing to the early and simultaneous onset of the monsoon in Mumbai and Delhi. As per IMD, the cyclonic circulation was located around the northwestern parts of the Bay of Bengal, with the system extending up to middle tropospheric levels.

What IMD's Yellow alerts mean for the cities

The India Meteorological Department (IMD) recently issued Yellow alerts for both Mumbai and Delhi.

 

level of warning, it portrays a situation of severe weather causing significant disturbances, resulting in extensive damage and threat to human life.

The main objective of this stratified color warning system is to facilitate a better understanding of the severity associated with the forecasted weather and provoke appropriate reactions to safeguard individual safety.