The severe cyclonic storm 'Arnab', which formed in the west-central Bay of Bengal, is moving towards the AP coast at a speed of 18 kmph. Officials said that it is likely to cross the coast near Yanam on Wednesday. The storm is currently centered 170 km from Visakhapatnam and 140 km from Kakinada. The IMD has warned that there is a risk of flash floods in 15 districts of AP, including Bapatla and Visakhapatnam, by Wednesday evening. Odisha and Chhattisgarh are also at risk. The AP Disaster Management Agency has advised people in low-lying areas to be alert.