Extremely Severe Alert, India Launches Cell Broadcast Alert System

The recent “Extremely Severe Alert” notification seen on mobile devices across India marks a major upgrade in the country’s disaster preparedness framework. This Emergency Alert on Mobile Phone is part of the government’s initiative to build a robust NDMA Alert system capable of delivering real-time warnings during critical situations like floods, earthquakes, and industrial hazards.

Institutional Framework Behind the NDMA “Extremely Severe Alert”

The Department of Telecommunications (DoT), Ministry of Communications, in collaboration with the National Disaster Management Authority (NDMA), is actively enhancing mobile-based disaster communication systems to ensure timely dissemination of life-saving information.

At the core of this initiative is the Integrated Alert System (SACHET), developed by the Centre for Development of Telematics (C-DOT), the premier telecom R&D institution under DoT.

• Built on the International Telecommunication Union recommended Common Alerting Protocol (CAP)
• Operational across all 36 States and Union Territories
• Enables geo-targeted alerts via SMS

So far, the NDMA Alert system has successfully delivered over 134 billion SMS alerts in 19+ Indian languages, covering disasters like cyclones, heavy rainfall, and extreme weather events.

What is SACHET?

SACHET (System for Advanced Communication and Holistic Emergency Transmission) is India’s Integrated Alert System that enables authorities to send geo-targeted disaster warnings directly to mobile users through SMS and Cell Broadcast. It has been developed by Centre for Development of Telematics under the Department of Telecommunications in collaboration with the National Disaster Management Authority to strengthen real-time emergency communication.

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Importance in Disaster Management

The Emergency Alert on Mobile Phone under the NDMA Alert system plays a critical role in minimizing disaster risks by ensuring timely, accurate, and wide-reaching communication to citizens during emergencies.

• Early Warning for Floods and Cyclones: The system enables authorities to send advance alerts about heavy rainfall, rising river levels, and approaching cyclones, allowing people in vulnerable areas to evacuate safely and protect essential belongings.
• Rapid Response During Earthquakes: In seismically active regions of India, even a few seconds of warning through mobile alerts can help individuals take cover, halt transport systems, and reduce casualties during earthquakes.
• Effective Management of Nuclear and Industrial Hazards: In case of emergencies like gas leaks, chemical spills, or nuclear incidents, the NDMA Alert system provides instant instructions such as evacuation routes or shelter-in-place guidelines, preventing panic and confusion.
• Real-Time Alerts for Lightning and Extreme Weather: The system delivers immediate warnings for lightning strikes, heatwaves, and sudden weather changes, helping farmers, outdoor workers, and the general public take preventive measures.
• Tsunami and Coastal Disaster Preparedness: For coastal regions, geo-targeted alerts ensure that people receive timely warnings about tsunamis or storm surges, enabling quick evacuation to safer zones.
• Wide Reach and Inclusivity: Since alerts are sent in multiple languages and do not require internet access, the system ensures that even remote and rural populations receive critical information.
• Reduction in Loss of Life and Property: Timely dissemination of alerts allows authorities and citizens to act quickly, significantly reducing casualties and economic losses during disasters.
• Strengthening Disaster Governance: The integration of agencies like the National Disaster Management Authority and the Department of Telecommunications ensures coordinated and efficient disaster response across the country.

Advantages of the NDMA Alert System

The Extremely Severe Alert on Mobile Phone under the NDMA Alert system offers several key advantages that strengthen disaster preparedness and response in India:

• Instant and Real-Time Communication: Alerts are delivered within seconds, ensuring timely warnings during critical situations like floods, earthquakes, and cyclones.
• Wide Geographic Coverage: Through Cell Broadcast technology, messages reach all mobile devices within a specific area, including remote and rural regions.
• No Internet Requirement: The system works on basic mobile networks, making it accessible even in areas with poor or no internet connectivity.
• Multilingual Alerts: Messages are sent in multiple Indian languages, ensuring better understanding across diverse populations.
• Reliable During Network Congestion: Unlike SMS or calls, Cell Broadcast is not affected by network traffic, making it highly dependable during emergencies.
• Geo-Targeted Messaging: Alerts are sent only to affected regions, reducing panic and ensuring relevance of information.
• Supports Multiple Disaster Types: Covers natural disasters (floods, earthquakes, cyclones) as well as man-made emergencies (industrial accidents, chemical leaks).
• Reduces Loss of Life and Property: Early warnings enable timely evacuation and preparedness, significantly minimizing damage.