LUCKNOW, May 22 -- Uttar Pradesh remained in the grip of an intense heatwave on Thursday, with Lucknow recording its highest maximum temperature of the season so far at 43.6 degrees Celsius and Banda being the hottest in the state at 47.6 degrees. The IMD maintained a 'Red Colour Warning' for severe heatwave conditions over the next three days and an Orange Alert thereafter. Lucknow's maximum temperature was 3.4 degrees above normal and the minimum, 29 degrees, was also 3.5 degrees above normal. P2...