Mumbai, Thane, and Raigad are likely to witness thunderstorms accompanied by lightning, light to moderate rainfall, and gusty winds of 30–40 kmph at isolated places. Palghar is expected to receive heavy rainfall

Mumbai will experience a high tide at 12:34 pm on September 12, reaching 4.61 metres. Another high tide is expected at 1:02 am on September 13, with the sea level forecast to reach 4.51 metres