IMD Scientist Naresh Kumar on the heatwave in north India. An intense heatwave sweeping through Delhi, Uttar Pradesh, Haryana and Punjab over the last week has spurred an India Meteorological Department (IMD) red alert for these states. Temperatures are soaring above 46 degrees across north India, including in Uttarakhand, Bihar and Jharkhand. In Bihar, 22 people have died due to severe heat and humidity in the last 24 hours.