After a hot and dry March and April, the capital is headed for a fresh spell of heatwave on Friday with temperatures projected to climb to a whopping 47 degrees by the weekend. An orange alert has been issued by the?India Meteorological Department (IMD) across several parts of the city, which is set to sizzle at 44 degrees on Friday.?The minimum temperature settled at 28.1, which is three notches above normal.?