Odisha and Andhra Pradesh Prepare for Cyclonic Storm

Context

According to the India Meteorological Department (IMD), a low pressure system over the Bay of Bengal is expected to intensify into a cyclonic storm and cross the southern Odisha and northern Andhra Pradesh coasts by October 28.

Both State governments have initiated precautionary arrangements, including the deployment of disaster response teams and cancellation of official leaves to ensure preparedness.

Key Highlights

• Cyclone Formation: A low-pressure system over the east central Bay of Bengal is likely to develop into a depression, followed by a deep depression and potentially a cyclonic storm.
• Affected Regions: Coastal districts of Odisha and northern Andhra Pradesh, particularly Ganjam, Gajapati, Srikakulam and Vizianagaram, are expected to experience heavy rainfall and strong winds.
• IMD Warning: The system may bring heavy to very heavy rainfall. Certain weather models have indicated wind speeds of up to 145 kmph and storm surges ranging between 1 and 2 metres.
• Administrative Preparedness: Odisha has cancelled official leaves, kept disaster response forces on standby and initiated evacuation and public safety arrangements.
• Fishing and Coastal Safety: Fishermen have been advised against entering the sea. Residents of vulnerable areas and government personnel have also been instructed to comply with safety advisories.

Key Concepts

• Tropical Cyclones: These are intense low pressure weather systems characterised by strong winds, heavy rainfall and spiralling cloud formations around a central region. They obtain their energy from warm ocean waters.
• Conditions for Cyclone Formation: Tropical cyclones generally require sea surface temperatures above 26.5°C, sufficient Coriolis force, abundant atmospheric moisture, low vertical wind shear and a pre-existing atmospheric disturbance.
• Bay of Bengal Vulnerability: The Bay of Bengal experiences frequent cyclonic activity because of warm sea surface temperatures, high moisture availability and favourable atmospheric conditions.
• Storm Surge: A storm surge refers to an abnormal rise in sea level, primarily caused by strong cyclone induced winds and low atmospheric pressure. It can result in severe coastal inundation and flooding.
• Disaster Management Act, 2005: It establishes the institutional framework for disaster management in India through the National Disaster Management Authority (NDMA), State Disaster Management Authorities (SDMAs) and District Disaster Management Authorities (DDMAs).

Way Forward

• Strengthen early warning mechanisms, last mile communication, cyclone shelters and community level disaster preparedness.
• Promote ecosystem restoration, particularly mangroves and coastal wetlands, as natural protective barriers against storm surges.
• Improve evacuation planning and ensure timely dissemination of weather alerts to vulnerable coastal communities.
• Strengthen coordination among disaster management authorities, local administrations and emergency response agencies to minimise loss of life and property.