Prime Minister Narendra Modi will visit Kerala, where nearly 167 people died since August 8, following torrential rain and related floods and landslides, this evening. He will undertake an aerial survey of the state. Nearly 100 people died over the last 48 hours in the worst monsoon in a century. Chalakudy town in Thrissur district turned into sea as river Periyar overflowed. Pandalam town in Pathanamthitta district and Changanassery in neighbouring Alappuzha district are flooded as well.