Swapna Kumbar , Bengaluru - Climate experts are raising concerns over the possible emergence of a powerful El Niño event later this year, warning that the phenomenon could significantly disrupt weather patterns across Asia and intensify extreme rainfall in parts of India. Among the cities considered most vulnerable is Chennai, where memories of the catastrophic 2015 floods continue to haunt residents and authorities alike. Meteorologists say current ocean temperature patterns in the Pacific are showing similarities to previous strong El Niño years that triggered severe weather events across the region.

According to climate scientists, rapidly warming sea surface temperatures and shifting atmospheric conditions are creating the foundation for what could become one of the strongest El Niño episodes in recent years. Such events often alter monsoon behavior, increasing the likelihood of erratic rainfall, cyclones, and urban flooding in southern India. Experts specifically warned that Chennai’s geography, dense urbanization, and drainage challenges make the city particularly vulnerable if heavy rainfall episodes intensify during the northeast monsoon season. The situation has revived concerns because the 2015 Chennai floods among the worst in the city’s history also occurred during a strong El Niño phase, leaving hundreds dead, displacing thousands, and causing massive economic losses. 

Meteorological agencies are now closely monitoring Pacific Ocean indicators while urging state authorities to strengthen flood preparedness, improve water management systems, and review urban infrastructure vulnerabilities ahead of the monsoon. Scientists also caution that climate change may amplify the impact of El Niño events by increasing the frequency of extreme weather patterns globally. Analysts say cities like Chennai could face growing climate risks in coming decades if rapid urban expansion continues without resilient planning and upgraded drainage infrastructure.

While experts stress that forecasts are still evolving, the possibility of a historic El Niño has already heightened concern among climate researchers and disaster management agencies. For Chennai, the warning serves as a reminder of how vulnerable major coastal cities remain to extreme weather events and how critical early preparedness could be in reducing the impact of future floods.