The city of Mumbai is once again on high alert as the India Meteorological Department (IMD) has issued a yellow alert for Wednesday and an orange alert for Thursday, warning of heavy to very heavy rainfall in the coming hours. Several parts of the city, especially South Mumbai, have already witnessed intense overnight downpours, triggering waterlogging and delays in transportation services.

Localities such as Byculla, Lalbaug, CSMT, and Churchgate experienced heavy rainfall late Tuesday night and early Wednesday morning. Andheri Subway, a frequent flood-prone zone, has been closed for vehicular movement due to 1 to 1.5 feet of waterlogging, as per Mumbai Traffic Police. Vehicles are being rerouted via Gokhale Bridge and Thackeray Bridge.

Local train services, Mumbai’s lifeline, have also been affected. Suburban trains on Central and Harbour lines are running with delays of up to 20 minutes, causing inconvenience to morning commuters. With rainfall expected to intensify later in the day, further delays are likely.

The IMD has warned that on Thursday, July 24, Mumbai and its surrounding regions may receive rainfall exceeding 150 mm within a span of 24–36 hours. The orange alert has raised concerns, especially for low-lying and flood-prone areas, prompting municipal authorities to activate contingency plans.

Since early Tuesday, areas across Mumbai and nearby zones—Thane, Navi Mumbai, Kalyan, Dombivli—have been receiving light to moderate rainfall, signaling a fresh surge in monsoon activity ahead of the holy Shravan month.

According to weather forecasts, rainfall intensity is expected to peak by Wednesday afternoon and continue through the night, particularly impacting regions in Palghar, Raigad, Ratnagiri, and Thane districts.

In anticipation, the Brihanmumbai Municipal Corporation (BMC) has increased vigilance across flood-prone zones. Dewatering pumps, emergency personnel, and response teams have been deployed at sensitive locations like Hindmata, Sion, Kurla, Malad underpass, and King’s Circle, which are typically submerged during intense spells.

The already saturated ground conditions from days of continuous showers mean even moderate rainfall could result in rapid water accumulation, heightening the risk of urban flooding. On Monday, July 22, similar conditions brought parts of the city, including Powai, Sakinaka, LBS Road, and Andheri, to a standstill due to flash waterlogging.

Citizens are advised to limit non-essential travel, especially during peak hours, and ensure they carry adequate rain gear. The IMD has also cautioned that intense, short-duration spells might severely affect road and rail transport.