IMD issued a yellow heatwave alert for several areas in Maharashtra, including Mumbai, Thane, and Ratnagiri, effective from March 9 till March 11. Regional Meteorological Centre (RMC) said minimum temperature in Mumbai on Monday was recorded at 21.3 °C at Santacruz observatory. Heatwave warning is issued when maximum (day) temperature breaches 37 °C for two consecutive days in coastal areas.