29 September,2026 07:34 PM IST | Mumbai | mid-day online correspondent
Representational image. File pic
The India Meteorological Department (IMD) has issued a yellow warning for Mumbai, forecasting thunderstorms accompanied by lightning, light spells of rain, and gusty winds on Tuesday evening.
Parts of Mumbai on Tuesday evening received heavy rainfall accompanied by thunderstorms.
According to the IMD's nowcast warning issued at 7 pm on September 29, 2026, the weather alert will remain valid for the next three hours till 10 pm.
The weather forecasting agency, while issuing the yellow alert, also said that thunderstorms with lightning, along with light spells of rain, are very likely at isolated places in Mumbai during the warning period.
IMD also added, "Gusty winds reaching 30-40 kmph are also expected in isolated areas."
The IMD has advised residents to take necessary precautions during the period of the warning, particularly in areas experiencing lightning and strong winds.
Mumbai's seven reservoirs collectively held 13,98,722 million litres (ML) of water as of 6 am on September 29, accounting for 96.64 per cent of their total useful storage capacity of 14,47,363 ML, according to the latest report from the Hydraulic Engineer's Department's Master Control Centre at Bhandup Complex.
The water stock remains high, but the combined storage is lower than the levels recorded on the same date in the previous two years. On September 29, 2025, the lakes held 14,12,131 ML, equivalent to 97.57 per cent of useful storage, while the corresponding figure in 2024 was 14,34,227 ML, or 99.09 per cent.
The four reservoirs comprising the Upper Vaitarna, Vaitarna, Tansa and Middle Vaitarna groups together held 6,56,161 ML, or 94.47 per cent of their combined useful storage capacity of 6,94,582 ML.
Upper Vaitarna stood at 603.27 metres, against its full supply level (FSL) of 603.51 metres. The reservoir held 2,19,332 ML, representing 96.60 per cent of its useful storage capacity. Its water level remained unchanged over the previous 24 hours, while no rainfall was recorded during the period. Its cumulative rainfall for the year stood at 3,894 mm.
In comparison, Upper Vaitarna was at 603.45 metres with 99.15 per cent storage on the corresponding date in 2025 and at 603.50 metres with 99.79 per cent storage in 2024.
