Cyclone Arnab poses a high risk to coastal communities in Andhra Pradesh and Odisha. The storm is expected to cause widespread damage to vulnerable structures, uproot trees, and disrupt power supplies. Heavy rainfall could lead to urban flooding, waterlogging, and landslides in hilly areas. Coastal flooding and rough seas with wave heights of 4-6 metres are anticipated, severely affecting visibility and maritime operations. Transportation networks, including roads and railways, may face disruptions due to waterlogging and flooding. The storm's impact could also extend to drinking water supplies, sanitation, and public health.