Heatwave Forecasting and Early Warning Systems at the District Level

Why in news

Parliamentary question regarding the mechanisms and effectiveness of heatwave forecasting and early warning systems at the district level in India, with specific mention of the India Meteorological Department's (IMD) role and the Hazard and Vulnerability Atlas.

Exam relevance

GS1, GS3, GS4 · Geography, Disaster Management, Governance, Society · Prelims · Mains

Key facts

1. India Meteorological Department (IMD), under the Ministry of Earth Sciences (MoES), issues heatwave warnings and alerts, including impact-based forecasts (IBFs), at the district level twice daily.
2. These forecasts include expected impacts and suggested actions for heatwave mitigation, aligned with NDMA guidelines and the heat action plan.
3. IMD has developed the Hazard and Vulnerability Atlas of India, which includes district-wise vulnerability assessments for heatwave hazards.
4. The Atlas covers all districts and assigns a Heatwave Vulnerability Index; Barmer district in Rajasthan has a high vulnerability index of 0.54.
5. Dissemination of forecasts and warnings occurs through multiple channels: email, APIs, mobile apps, social media, websites, media, mass communication, and CAP-based mechanisms.
6. IMD shares heatwave bulletins with stakeholders like Disaster Management Authorities and Health Departments.

Prelims pointers

• IMD, under MoES, issues district-level heatwave forecasts twice daily.
• Impact-Based Forecasts (IBFs) for heatwaves include expected impacts and mitigation actions.
• The Hazard and Vulnerability Atlas of India provides district-wise heatwave vulnerability assessments.
• Common Alerting Protocol (CAP) is used for disseminating warnings.

Mains practice question

Discuss the role of the India Meteorological Department (IMD) in mitigating the impact of heatwaves in India. Analyze the effectiveness of current forecasting and early warning systems at the district level and suggest measures for improvement.

Static linkage

Connects to India's disaster management framework, the role of meteorological agencies in forecasting and early warning systems, and the impact of climate change leading to extreme weather events like heatwaves. It also relates to governance in implementing heat action plans at the district level.

Significance

Effective heatwave forecasting and early warning systems are crucial for saving lives and reducing economic losses. District-level forecasts enable targeted interventions by local authorities, disaster managers, and health departments. The development of a Hazard and Vulnerability Atlas aids in identifying high-risk areas, allowing for proactive preparedness and resource allocation. Dissemination through multiple channels ensures wider reach to vulnerable populations and stakeholders.