Overview

• The southwest monsoon arrived in Mumbai on May 26, 2025, marking its earliest onset in 75 years and advancing rapidly after reaching Kerala just two days earlier.
• Mumbai recorded 135.4 mm of rainfall in the past 24 hours, the highest single-day total for May in 107 years, leading to widespread waterlogging and infrastructure disruptions.
• The India Meteorological Department (IMD) issued a red alert for Mumbai and surrounding districts, warning of extremely heavy rainfall, thunderstorms, and gusty winds up to 60 km/h.
• Transport was severely affected as waterlogging disrupted train services, delayed flights, and left roads flooded in low-lying areas like Dadar, Bandra, and Sion.
• The newly inaugurated Acharya Atre Chowk underground metro station on Aqua Line 3 was flooded, forcing partial suspension of metro services and raising concerns about infrastructure preparedness.