Amaravati: Andhra Pradesh State Disaster Management Authority managing director R Kurmanadh said 227 mandals in the state are expected to experience heat waves on Saturday. Of the 227 mandals, 58 of them would experience severe heat waves, while 169 are expected to witness heat waves, he said. "Severe heat waves have been forecast for 12 mandals in Srikakulam district, Vizianagaram, …