Transition to La Niña: Implications for the Indian Monsoon and Disaster Preparedness

The India Meteorological Department (IMD) and global meteorological agencies have signaled a swift transition from El Niño to La Niña conditions in the equatorial Pacific. This shift in the El Niño-Southern Oscillation (ENSO) cycle involves the cooling of sea-surface temperatures in the central and eastern equatorial Pacific. For India, this geophysical transition is a critical determinant of the Southwest Monsoon's performance. Historically, La Niña is associated with "above-normal" rainfall across the Indian subcontinent. While this provides a significant boost to the agrarian economy, replenishing reservoirs and ensuring soil moisture for the Kharif season, it also presents substantial challenges. The rapid onset of La Niña often leads to extreme weather events, including intense precipitation spells that can trigger devastating floods. The Indo-Gangetic plain, characterized by its dense population and complex drainage systems, remains particularly vulnerable to such shifts.