Mumbai remained under an Orange Alert on Tuesday as the IMD forecast a 3.93-metre high tide at 4.34 pm alongside isolated heavy to very heavy rainfall. Authorities warned that gusty winds of up to 70 kmph and tidal activity could trigger waterlogging in low-lying areas. Mumbai: Mumbai remained on alert on Tuesday as the India Meteorological Department (IMD) warned of a 3.93-metre high tide expected at 4.