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Subject: Disaster Management

  • Need quake warning systems: PM; working to better accuracy by 10-15%, says IMD DG

    Why in the News?

    Recently, PM released the IMD’s Vision Document 2047, outlining a plan to achieve nearly perfect weather forecasts for up to three days and 90% accuracy for forecasts made five days ahead by 2047.

    What is IMD’s Vision Document 2047? 

    • The Vision Document aims for zero-error forecast accuracy for up to three days lead time and 90% accuracy for forecasts issued five days in advance by 2047. This ambitious target reflects India’s commitment to improving weather forecasting capabilities significantly.
    • Focus Areas: The document emphasises enhancing weather surveillance technologies, improving atmospheric observations, and leveraging high-performance computing systems.
      • It also highlights the importance of developing advanced earth system models and data-driven methods, including the use of AI and machine learning.

    Why does India need an Earth warning system? 

    • High Seismic Vulnerability: India lies in a seismically active zone, with regions like Himachal Pradesh, Uttarakhand, and the Northeast being particularly earthquake-prone. Early warning systems can help reduce damage and save lives in these areas. Example: The 2001 Gujarat earthquake caused widespread devastation.
    • Risk to Dense Urban Areas: Major cities like Delhi, Mumbai, and Kolkata are vulnerable to earthquakes. Early warnings can help evacuate people, protect infrastructure, and minimize casualties. Example: A strong earthquake in Delhi could severely impact millions.
    • Limited Preparedness and Response Time: Earthquakes give little to no time for people to react. A warning system could provide crucial seconds or minutes to activate emergency protocols, limiting loss of life and property. Example: The 2015 Nepal earthquake caused devastation in northern India.

    How can India achieve zero-error accuracy in forecasting disasters?

    • Technological Advancements: The implementation of Mission Mausam involves deploying next-generation radars, satellites with advanced instruments, and high-performance computing systems. These tools are crucial for improving the precision of weather predictions.
    • Data Assimilation and Modeling: Enhancing data assimilation processes and developing improved earth system models will contribute to better forecasting accuracy. The integration of AI/ML tools is expected to refine weather predictions further.
    • Capacity Building: The initiative will also focus on building capacity within meteorological services to ensure that no severe weather events go undetected. This includes training personnel and enhancing operational frameworks for the timely dissemination of forecasts.

    What are the steps taken by the Indian Government in the past year?

    • Amendment of the Disaster Management Act: In August 2024, the government introduced the Disaster Management (Amendment) Bill, 2024, in the Lok Sabha.
      • This bill proposes the establishment of Urban Disaster Management Authorities for state capitals and large cities, the creation of disaster databases at national and state levels, and the formation of State Disaster Response Forces to strengthen disaster response capabilities.
    • Investment in Urban Flood Mitigation: In August 2024, India announced plans to invest nearly $300 million over two years to mitigate urban flooding and conserve water in major cities, including Mumbai, Chennai, and Bengaluru.
      • The initiative focuses on expanding water bodies like lakes and constructing drainage systems to manage excessive rainfall during monsoon seasons.
    • Addressing Urban Heat Islands: In June 2024, government officials acknowledged that rapid urbanization has turned cities into “heat traps,” exacerbating the effects of heatwaves.
      • Efforts are underway to implement heat action plans, which include provisioning drinking water, improving medical facilities, rescheduling outdoor work, and increasing green spaces to mitigate urban heat.
    • Enhancement of Early Warning Systems: The government has been working to improve early warning systems for various natural disasters, including floods and heatwaves, to provide timely alerts and reduce the impact on vulnerable populations.
    • Capacity Building and Training: There has been a focus on training and capacity building for disaster response teams at both national and state levels. For instance, In 2024, the NDRF organised a multi-agency mock drill in Assam to simulate a response to a major flood disaster.

    What are the challenges in forecasting a disaster?

    • Data Gaps and Limited Technology: Forecasting requires high-quality, real-time data from advanced technologies like satellite imagery, weather radars, and seismic sensors. However, data scarcity in remote areas or regions with underdeveloped infrastructure hampers accurate predictions.
      • Example: The 2013 Kedarnath floods in India resulted from a cloudburst that was not forecasted in time due to a lack of localized meteorological data and advanced radar systems.
    • Unpredictability of Natural Phenomena: Some disasters, such as earthquakes and tsunamis, are inherently unpredictable because they result from sudden geological shifts.
      • Example: The 2004 Indian Ocean tsunami followed a massive earthquake, but the lack of a regional tsunami warning system in the Indian Ocean made it impossible to alert affected countries in time.
    • Challenges in Communication and Dissemination: Even when forecasts are accurate, ineffective communication of warnings to vulnerable populations due to language barriers, poor outreach, or lack of awareness can render forecasts ineffective.
      • Example: During Cyclone Tauktae (2021) in India, while the forecast was accurate, several fishermen ignored warnings to evacuate, leading to fatalities despite advanced cyclone prediction systems.

    Way forward: 

    • Strengthen Technological and Data Capabilities: Invest in localized weather stations, advanced radar systems, and seismic sensors in remote areas, while leveraging AI and machine learning for precise forecasting and real-time data integration.
    • Enhance Community Awareness and Communication: Develop multilingual, accessible early warning systems and conduct regular public awareness campaigns to ensure timely dissemination and community readiness during disasters.

    Mains PYQ:

    Q Discuss the recent measures initiated in disaster management by the Government of India departing from the earlier reactive approach. (UPSC IAS/2020)

  • What is Pink Fire Retardant?

    What is Pink Fire Retardant?

    Why in the News?

    Air tankers have dropped thousands of litres of pink fire retardant (PFR) to slow the spread of wildfires in Los Angeles.

    Pink Fire Retardant (PFR) and its properties

    • The PFR is a chemical mixture designed to slow or suppress wildfires by reducing the flammability of vegetation and other materials.
    • The most recognized brand of PFR is Phos-Chek, manufactured by Perimeter Solutions.
    • It is primarily made of ammonium phosphate-based slurry, including:
      • Monoammonium phosphate (80%-90%).
      • Diammonium phosphate.
      • Performance additives for enhanced effectiveness.
      • Pink dye for visibility.
    • It is sprayed as a foam or slurry to coat vegetation ahead of wildfires.
    • It slows combustion by:
      • Depleting oxygen needed for flames.
      • Altering how cellulose (plant material) decomposes, creating non-flammable carbon.
    • Unlike water, which evaporates quickly, PFR’s chemical components remain effective for days or weeks, providing long-term protection.

    Significance of PFR

    • Provides fire-fighters with critical time to control wildfires.
    • Creates firebreaks by coating vegetation and preventing ignition.
    • Effective in diverse terrains, slopes, and weather conditions.
    • Helps protect natural habitats and human infrastructure by slowing wildfire spread.
    • Reduces the scale and intensity of wildfires, minimizing ecological damage.

    PYQ:

    [2019] Consider the following:

    1. Carbon monoxide
    2. Methane
    3. Ozone
    4. Sulphur dioxide

    Which of the above are released into atmosphere due to the burning of crop/biomass residue?

    (a) 1 and 2 only
    (b) 2, 3 and 4 only
    (c) 1 and 4 only
    (d) 1, 2, 3 and 4

  • Tirupati stampede: Why stampedes take place, how to mitigate risks

    Why in the News?

    Recently six people lost their lives in a stampede in Tirupati while waiting to collect tokens for Lord Venkateswara’s darshan.

    Why do stampedes take place?

    Stampedes are chaotic and uncontrolled movements of large crowds, often triggered by panic or an urgent rush to move in a confined or crowded space.

    • Venues that exceed their safe capacity can lead to dangerously crowded conditions. When too many people gather in a confined space, the risk of a stampede increases significantly.
    • Inadequate planning and lack of effective crowd control measures, such as clear exits and designated waiting areas, can exacerbate the situation. Poor organisation often leads to confusion and panic among attendees.
    • Narrow pathways, obstacles, and poorly designed event spaces can create bottlenecks during emergencies. These barriers make it difficult for people to move freely and can trap crowds, increasing the risk of crush injuries.

    How does human psychology lead to stampedes?

    • Panic Response: Panic can spread rapidly through crowds, causing individuals to act irrationally. When one person begins to push forward out of fear or urgency, it creates a domino effect where others follow without understanding the situation.
    • External Triggers: Events such as loud noises, sudden movements, or perceived threats (like a fire or an emergency) can trigger panic responses in crowds, leading to stampedes.
    • Psychological Factors: Theories of collective behaviour suggest that in large groups, individuals may act against their own interests when panic sets in.
      • For instance, the desire to escape a perceived danger can override cooperative behaviour, leading to chaotic pushing and shoving.

    How does the physical organisation of spaces contribute to stampedes?

    • Narrow Exits and Blocked Pathways: Limited exits and narrow pathways can create bottlenecks during emergencies, making it difficult for individuals to evacuate quickly.
      • When a crowd is forced to funnel through a small area which leads to panic and chaos, increasing the likelihood of a stampede as people rush to escape.
    • Poorly Designed Crowd Flow: Spaces that do not effectively manage crowd flow can exacerbate congestion.
      • Suppose different groups of people converge at the same point without clear guidance or separation that can lead to confusion and a surge of movement, triggering stampede conditions. Effective crowd management strategies are essential to ensure smooth movement.
    • Inadequate Lighting and Visibility: Insufficient lighting can disorient attendees and hinder their ability to navigate the space safely. In low-light conditions, individuals may struggle to see exits or understand the crowd dynamics, leading to increased panic and disorder during critical moments, which can precipitate a stampede.

    How to better prevent stampedes, or at least, mitigate their risks? (Way forward)

    • Effective Crowd Management: Limit crowd size through pre-registration, schedule staggered entries, and organise queues with barriers and clear signage. Use real-time monitoring tools like CCTV and AI-based systems to manage crowd density.
    • Improved Infrastructure and Emergency Readiness: Design venues with wide pathways, multiple exits, and clear evacuation routes. Provide on-site medical facilities and train staff in crowd control, first aid, and emergency response.
    • Public Awareness and Technology Use: Educate attendees on safety protocols, and use digital tools like online ticketing and mobile alerts to prevent physical queues and guide the crowd calmly during emergencies.
  • The Dam Safety Act of 2021

    Why in the News?

    The Supreme Court has criticized the Union government for its inaction in fully implementing the Dam Safety Act, 2021, nearly five years after its enactment.

    What is the Dam Safety Act of 2021?

    Details Enacted to ensure the structural and operational safety of over 5,700 large dams in India.

    Objectives (Section 3):
    • Prevent dam-related disasters by ensuring dam safety.
    • Establish institutions for monitoring, maintenance, and emergency preparedness.

    Structural Mandate
    • National Committee on Dam Safety (NCDS) (Sections 5–6): Chaired by the Chairperson of the Central Water Commission (CWC) and reconstituted every three years to develop policies, guidelines, and standards.
    • National Dam Safety Authority (NDSA) (Section 9): Implements NCDS guidelines, regulates dam safety standards, and resolves disputes between State Dam Safety Organizations (SDSOs) and dam owners.
    • State Committees on Dam Safety (SCDS) (Section 14): Provide state-level oversight.
    • State Dam Safety Organizations (SDSOs) (Section 15): Monitor and inspect dams at the state level, reporting to NDSA.
    Other Provisions:

     

    • Responsibilities of Dam Owners (Section 38):  Form Dam Safety Units, prepare and implement Emergency Action Plans (EAPs), and conduct regular Comprehensive Safety Evaluations (CSEs).
    • Emergency Preparedness (Section 39):  Mandatory EAPs for rapid response in emergencies.
    • Penalties for Non-Compliance (Section 45):  Imprisonment up to two years, fines, or both for failing to comply with Act provisions.

    Why is Dam Safety a priority concern in India?

    • Third-Highest Number of Dams Globally: India has over 4,407 large dams, following China and the USA.
    • Aging Dams: By 2025, over 1,115 dams will be more than 50 years old; By 2050, 4,250 dams will surpass 50 years of age, with 64 dams exceeding 150 years.
    • Decreasing Storage Capacity: Sedimentation reduces reservoir efficiency, affecting water availability for irrigation, drinking, and hydropower. Ex. Bhakra Dam has experienced 139.86% higher siltation rates than estimated, reducing its lifespan.
    • Structural Vulnerabilities: Poorly designed sedimentation management systems make many dams structurally weak over time. Extreme environmental events, such as floods, can exacerbate these vulnerabilities.
    • Lack of Data and Monitoring: Insufficient documentation of storage loss, sedimentation rates, and other critical metrics leads to a lack of preparedness.

    PYQ:

    [2018] Suppose the Government of India is thinking of constructing a dam in a mountain valley bound by forests and inhabited by ethnic communities. What rational policy should resort to in dealing with unforeseen contingencies?

    [2019] What is common to the places known as Aliyar, Isapur and Kangsabati?

    (a) Recently discovered uranium deposits

    (b) Tropical rain forests

    (c) Underground cave systems

    (d) Water reservoirs

  • [26th December 2024] The Hindu Op-ed: Nagapattinam’s journey of resilience

    PYQ Relevance:

    Q) On December 2004, tsunami brought havoc on fourteen countries including India. Discuss the factors responsible for occurrence of tsunamis and its effects on life and economy. In the light of guidelines of NDMA (2010) describe the mechanisms for preparedness to reduce the risk during such events. (UPSC CSE 2017)

    Mentor’s Comment: UPSC mains have always focused on topics like ‘ tsunami’ in (2017) and ‘NDMA’ in (2014,2016, 2017, 2020).

    The 2004 Indian Ocean tsunami was a powerful reminder of nature’s force and human vulnerability. Nagapattinam, Tamil Nadu, was one of the hardest-hit areas, but the disaster also sparked important changes in disaster response and preparedness. Over the past 20 years, India has made significant progress in disaster management. However, challenges like urbanization, climate change, and more frequent extreme weather events continue to create new risks. Revisiting Nagapattinam’s experience provides valuable lessons for improving future disaster strategies and building stronger, more resilient communities.

    Today’s Editorial focuses on the disaster due to the tsunami. This content can be used for presenting the mains answer while talking about disaster management In India.

    _

    Let’s learn!

    Why in the News?

    The 20th anniversary of the Indian Ocean tsunami is a moment to assess progress and gaps in disaster strategies. Nagapattinam’s experience highlights the critical need for building and sustaining long-term resilience.

    What factors contributed to Nagapattinam’s journey of resilience?

    • Immediate Response and Coordination: Following the tsunami, Nagapattinam benefited from well-coordinated rescue operations led by experienced officers and supported by local volunteers, military personnel, and various government departments.
      • This swift action was crucial in managing the chaos and addressing immediate needs such as medical aid and shelter.
    • Infrastructure Restoration: The restoration of essential infrastructure, including electricity, water supply, and road connectivity, was prioritized.
      • Over 13,000 temporary shelters were constructed to accommodate displaced families, which played a vital role in stabilizing the community.
    • Holistic Rehabilitation Efforts: The recovery strategy incorporated Disaster Risk Reduction (DRR) measures that emphasized building resilient communities.
      • This included constructing over 55,000 multi-hazard-resistant homes and establishing disaster-ready healthcare facilities and educational institutions.
    • Community Involvement: The active participation of over 400 NGOs in providing essential services fostered community ownership of recovery efforts.
      • Local communities were empowered to engage in their recovery processes, enhancing resilience through collective action.
    • Policy and Institutional Reforms: The disaster catalyzed significant reforms in India’s disaster management framework, including the establishment of the National Disaster Management Authority (NDMA) and the enactment of the Disaster Management Act in 2005.
      • These reforms institutionalized disaster preparedness and response mechanisms at various levels of government.

    How can the lessons learned from this experience be applied to other vulnerable regions?

    • Emphasizing Preparedness: The importance of establishing early warning systems and enhancing community preparedness can be applied to other vulnerable regions. This includes regular training exercises and community drills to ensure readiness for future disasters.
    • Integrating DRR into Development Plans: Other regions can learn from Nagapattinam’s integration of DRR measures into urban planning and infrastructure development, ensuring that resilience is built into the fabric of communities from the outset.
    • Community Engagement: Involving local populations in recovery efforts fosters a sense of ownership and empowerment, which is crucial for long-term resilience. Engaging communities in planning and implementation can lead to more effective disaster management strategies.
    • Comprehensive Insurance Mechanisms: Expanding risk insurance beyond crops to cover housing and other assets is vital for enhancing financial resilience against disasters. This approach can help mitigate economic losses in future events.

    What are the ongoing challenges faced by Nagapattinam in its journey towards sustainable development?

    • Evolving Risks: Nagapattinam continues to face challenges from evolving risks associated with climate change, urbanization, and the increasing frequency of extreme weather events. These factors necessitate ongoing innovation in disaster management strategies.
    • Sustaining Community Engagement: Maintaining active community participation in disaster preparedness initiatives remains a challenge as memories of past disasters fade. Continuous education and engagement are required to keep communities vigilant.
    • Resource Allocation: Ensuring efficient allocation of resources for ongoing recovery efforts is crucial but can be hampered by bureaucratic hurdles or misalignment with local needs. Institutional frameworks must be strengthened to facilitate better coordination between NGOs and government agencies.
    • Addressing Vulnerabilities: Disasters disproportionately affect marginalized groups, including women, children, and differently-abled individuals. Continued focus on inclusive policies that address these vulnerabilities is essential for building equitable resilience.
    What are the NDMA guidelines to prevent this type of disaster?

    • Early Warning Systems: Establishment of the Indian Tsunami Early Warning Centre (ITEWC) for real-time monitoring and alerts using satellite data, sensors, and seismic readings.
    • Community Awareness: Public awareness campaigns and regular drills to educate coastal populations on tsunami risks, evacuation routes, and safety measures.
    • Preparedness Plans: Local disaster management plans with clear evacuation routes, shelters, and training for officials, responders, and volunteers.
    • Coastal Zone Management: Risk-reducing coastal planning with tsunami-resistant structures and sustainable land use practices.
    • Infrastructure Resilience: Strengthening infrastructure, including tsunami-resistant buildings and sea walls, and enhancing communication networks.
    • Collaboration with Communities: Involving local communities in disaster preparedness, with the establishment of local disaster management committees.
    • Research and Monitoring: Ongoing research into tsunami risks and hazards to improve warning systems and preparedness strategies.

    Way forward: 

    • Strengthening Resilience through Innovation and Inclusion: Develop adaptive disaster management strategies that incorporate advanced technologies like AI-driven risk assessments and community-based DRR measures.  
    • Sustained Community Engagement and Education: Regularly conduct training, workshops, and awareness programs to keep communities prepared and involved. Leverage local knowledge and foster ownership in disaster preparedness to maintain long-term vigilance and resilience.

    https://www.thehindu.com/opinion/lead/nagapattinams-journey-of-resilience-lessons-for-the-future/article69026509.ece#:~:text=On%20December%2026%2C%202004%2C%20the,groundwork%20for%20more%20resilient%20societies

  • The lapses in the Disaster Management Bill

    Why in the News?

    The Disaster Management (Amendment) Bill, 2024, raises serious concerns. Instead of addressing the shortcomings of the Disaster Management Act (DMA), 2005, the Bill reduces opportunities for participation, accountability, and efficient governance.

    What are the lapses in the recent bill?

    • Top-Down Terminology: The Bill employs terms like “monitor” and “guidelines,” which suggest a top-down approach, rather than fostering community engagement through terms like “supervision” and “direction.”
      • This undermines trust between authorities and local communities, which are crucial in disaster response.
    • Neglect of Local Roles: While the Bill defines critical concepts such as ‘hazard’, ‘resilience’, and ‘vulnerability’, it fails to recognise the essential roles of local communities, panchayats, and NGOs in disaster management.
    • Lack of Intersectional Consideration: The Bill does not address intersectional discrimination affecting vulnerable groups like women, disabled individuals, lower castes, and LGBTQIA communities. Ignoring these factors limits the Bill’s inclusivity and effectiveness.
    • Absence of Accountability Mechanisms: The omission of performance evaluations for district authorities raises concerns about accountability. Without mechanisms to assess preparedness and response effectiveness, there is a risk of shifting blame onto individual philanthropic efforts during disasters.
    • Exclusion of Law and Order Issues: By stating that ‘man-made causes’ do not include law and order matters, the Bill complicates the role of police in disaster management while still involving them in executive committees.
    • Removal of Relief Standards: Key provisions regarding minimum standards of relief for disaster victims have been omitted from the Bill. This includes special provisions for vulnerable populations such as widows and orphans, which diminishes the support system for those affected by disasters.
    • Centralisation of Power: The Bill centralises decision-making by transferring responsibilities from local executive committees to national authorities, potentially leading to inefficiencies and delays in disaster response.
    • Neglect of Animal Welfare: The Bill does not address the impact of disasters on animals or include provisions for their welfare, which is a significant oversight given the scale of animal casualties during disasters.
    • Urban Disaster Management Authority (UDMA): The rationale behind establishing a separate UDMA is unclear, raising questions about its effectiveness given existing municipal structures that may not adequately address urban flooding issues caused by poor planning.

    What are the lessons learnt from a spectrum of areas?

    • Community Engagement: Successful disaster responses have historically relied on local knowledge and community action.
      • For example, in Cyclone Aila (2009, Sundarbans): Local villagers and fisherfolk initiated rescue operations well before official disaster response teams could arrive, saving countless lives.
    • Intersectionality Matters: Acknowledging diverse vulnerabilities ensures that disaster management strategies are comprehensive and equitable.
      • For example, Kerala Floods (2018): Specific interventions for women and children in relief camps improved health and hygiene outcomes, showcasing the value of targeted measures.
    • Accountability is Crucial: Clear accountability mechanisms are necessary to ensure that authorities fulfil their responsibilities effectively.
      • For example, in Uttarakhand Flash Floods (2013): Lack of timely action by district authorities and poor preparedness exacerbated the disaster’s impact, underscoring the need for performance evaluations.

    Can Regional collaboration work out?

    Regional collaboration could significantly enhance disaster management efforts, particularly in South Asia where cross-border challenges are prevalent:

    • Shared Resources and Knowledge: Collaborative frameworks among countries like SAARC, BIMSTEC, and BRICS could facilitate resource sharing and knowledge exchange during disasters.
    • Joint Preparedness Plans: Developing regional action plans based on shared vulnerabilities can strengthen collective responses to disasters.
    • Addressing Zoonotic Diseases: Given the increasing threat of zoonotic diseases, a coordinated regional approach could improve public health responses during disasters.

    What is the Sendai Framework for Disaster Risk Reduction?

    • The Sendai Framework for Disaster Risk Reduction (2015-2030) is a comprehensive international agreement aimed at reducing disaster risks and enhancing resilience globally.
    • It was adopted by UN member states during the Third UN World Conference on Disaster Risk Reduction held in Sendai, Japan, from March 14 to 18, 2015.
    • India is a signatory to the Sendai Framework for Disaster Risk Reduction (2015-2030).

    Way forward: 

    • Strengthen Community Participation and Inclusivity: Amend the Bill to explicitly involve local communities, panchayats, and NGOs in disaster management.
    • Promote Accountability and Regional Cooperation: Introduce performance evaluations for district authorities to ensure preparedness and effective disaster responses.

    Mains PYQ:

    Q Describe various measures taken in India for Disaster Risk Reduction (DRR) before and after signing ‘Sendai Framework for DRR (2015-2030)’. How is this framework different from ‘Hyogo Framework for Action, 2005’? (UPSC IAS/2018)

  • Cyclone Fengal

    Why in the News?

    • A depression over the Southwest Bay of Bengal has intensified into a deep depression and is likely to further intensify into Cyclone Fengal.
      • The system is currently close to an area with higher sea surface temperatures (SST), contributing to its potential intensification into a cyclonic storm.

    Origin of the Name ‘Fengal’

    • The name ‘Fengal’ was proposed by Saudi Arabia and is rooted in Arabic.
    • It reflects a combination of linguistic tradition and cultural identity.

    Cyclone Naming Process:

    • Cyclones in the North Indian Ocean are named by the World Meteorological Organization (WMO) and the United Nations Economic and Social Commission for Asia and the Pacific (UNESCAP) panel.
    • This panel includes 13 member countries, such as India, Bangladesh, Sri Lanka, and Pakistan, among others.
      • Each member country submits a list of potential cyclone names, and these names are used sequentially as cyclones form in the region.
      • This system, in place since 2004, ensures easy identification and effective communication of storms to the public.

     

    PYQ:

    [2015] In the South Atlantic and South Eastern Pacific regions in tropical latitudes, cyclone does not originate. What is the main reason behind this?

    (a) Sea Surface temperature are low

    (b) Inter Tropical Convergence Zone seldom occurs

    (c) Coriolis force is too weak

    (d) Absence of land in those regions

  • TN declares Heatwaves a State-specific Disaster

    Why in the News?

    • The Tamil Nadu government has officially declared heatwaves a State-specific disaster.
      • It announced an ex-gratia payment of ₹4 lakh for families of individuals who die from heat-related causes, including those involved in relief operations.

    Key Details of the Declaration

    • Purpose: This declaration allows the government to provide immediate relief to those affected by extreme heat, especially during the severe temperatures of April and May 2024.
    • Funding: Relief efforts will be supported by the State Disaster Response Fund.
    • Other State-specific disasters in TN: Sea erosion, lightning, thunder, whirlwinds, and gale winds as State-specific disasters to ensure relief assistance for those impacted by these events.

    Note: 

    • Kerala in March this year, declared man-animal conflict as a state-specific disaster, becoming the first state in the country to do so.
    • Once an issue is declared a state-specific disaster, the onus to deal with it shifts to the state disaster management authority, which, powered by the Disaster Management Act, can take quicker and more decisive action.
    • Also, district collectors can directly intervene in their capacity as the chairman of the district disaster body.

     

    heatwave

    About Heatwaves:

    Details
    Definition A heatwave is a prolonged period of excessively hot weather, relative to the usual climate of a region.
    Occurrence Typically occurs in India between March and June.
    Declaration by IMD
    • Plains: The maximum temperature is at least 45°C
    • Hills: The maximum temperature is at least 30°C
    • Coastal regions: The maximum temperature is at least 37°C and the departure from normal is at least 4.5°C
    Formation High-Pressure Systems: Develop when high pressure settles over a region for days or weeks.
    Air Sinking: Forces air to sink, warming and drying it.
    Increased Radiation: Fewer clouds lead to higher surface temperatures.
    Surface Winds: Warm air from lower latitudes or continental winds intensify heat.
    Criteria for Declaring a Heatwave At least two stations in a meteorological subdivision must meet one of the following criteria for two consecutive days (declared on the second day):
    Based on Departure from Normal:
    – Heat Wave: Temperature departure of 4.5°C to 6.4°C above normal.
    – Severe Heat Wave: Temperature departure of >6.4°C above normal.
    Based on Actual Maximum Temperature (plains only):
    – Heat Wave: Maximum temperature reaches 45°C or higher.
    – Severe Heat Wave: Maximum temperature reaches 47°C or higher.
    Duration Typically lasts a minimum of four days but can extend to seven or ten days.
    Longest Recorded Spell: May 2015, lasting from 18 to 31 May.
    Impact of Heatwaves Heat Strokes: Increased risk, especially for the elderly and those with chronic illnesses.
    Increased Healthcare Costs: Higher hospital visits and death rates from related illnesses.
    Reduced Productivity: Extreme heat affects the output of over 1 billion workers.
    Risk of Wildfires: Heat domes can lead to wildfires.
    Effect on Vegetation: Prolonged heat damages crops and leads to droughts.
    Increased Energy Demands: Higher electricity usage for cooling, driving up rates.

     

    PYQ:

    [2013] Bring out the causes for the formation of heat islands in the urban habitat of the world.

    [2013] The annual range of temperature in the interior of the continents is high as compared to coastal areas. What is / are the reason / reasons?

    1. Thermal difference between land and water

    2. Variation in altitude between continents and oceans

    3. Presence of strong winds in the interior

    4. Heavy rains in the interior as compared to coasts

    Select the correct answer using the codes given below.

    (a) 1 only

    (b) 1 and 2 only

    (c) 2 and 3 only

    (d) 1, 2, 3 and 4

  • Hurricane Milton

    Why in the News?

    Hurricane Milton made landfall near Siesta Key, Florida, USA which caused heavy rain, flooding and strong winds resulting in significant damage and loss of lives.

    Hurricane Milton: Origin and Causes

    • Hurricane Milton was a powerful storm that made landfall in Florida near Siesta Key, causing widespread damage.
    • It was a Category 5 hurricane with wind speeds of 285 km/h, making it one of the strongest hurricanes ever recorded in the Atlantic Ocean.
    • It originated in the Gulf of Mexico, an area connected to the Atlantic Ocean.

    Why it was an unusual storm?

    • Milton went from a Category 1 storm to a Category 5 storm in just 12 hours.
      • Usually, hurricanes intensify at a slower pace, but Milton’s wind speeds increased by 145 km/h in one day, which is very rare.
    • Sea-surface temperatures of 31°C were much higher than the 26°C needed for hurricane formation.
      • This excess heat allowed Milton to intensify quickly.
    • Most hurricanes follow a westward path, but Milton moved eastward and made landfall on the western coast of Florida.
      • According to scientists, very few hurricanes have taken this path before.
    • Wind shear is a change in wind speed and direction that can weaken hurricanes.
      • In Milton’s case, there was almost no wind shear, allowing the storm to grow stronger without interference.

    PYQ:

    [2020] Consider the following statements:

    1. Jet streams occur in the Northern Hemisphere only.

    2. Only some cyclones develop an eye.

    3. The temperature inside the eye of a cyclone is nearly 10ºC lesser than that of the surroundings.

    Which of the statements given above is/are correct?

    (a) 1 only

    (b) 2 and 3 only

    (c) 2 only

    (d) 1 and 3 only

  • [5th October 2024] The Hindu Op-ed: Kerala urgently needs to identify risk zones

    PYQ Relevance:

    Q). Discuss about the vulnerability of India to earthquake-related hazards. Give examples including the salient features of major disasters caused by earthquakes in different parts of India during the last three decades. (UPSC CSE 2021)
    Q). Describe the various causes and the effects of landslides. Mention the important components of the National Landslide Risk Management Strategy. (UPSC CSE 2021)
    Q). Discuss the recent measures initiated in disaster management by the Government of India departing from the earlier reactive approach. (UPSC CSE 2020)
    Q). Disaster preparedness is the first step in any disaster management process. Explain how hazard zonation mapping will help disaster mitigation in the case of landslides. (UPSC CSE 2019)

    Prelims:

    The 2004 Tsunami made people realize that mangroves can serve as a reliable safety hedge against coastal calamities. How do mangroves function as a safety hedge? (UPSC CSE 2011)
    a) The mangrove swamps separate the human settlements from the sea by a wide zone in which people neither live nor venture out
    b) The mangroves provide both food and medicines which people are in need of after any natural disaster
    c) The mangrove trees are tall with dense canopies and serve as an excellent shelter during a cyclone or tsunami
    d) The mangrove trees do not get uprooted by storms and tides because of their extensive roots.

    Mentor’s Comment:  Today’s editorial discusses the limitations in our present governance and management concerning Natural Disasters. The recent landslide event in Kerala is considered one of the deadliest landslides in India’s history, raising urgent concerns about the effectiveness of disaster management strategies in the region, which has a history of similar incidents over the past four decades. Previously, we saw the limitations based on the Disaster Management Act. Now, this article will help you to build a better consensus around the same theme.

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    Let’s learn!

    Why in the News?

    On July 30, 2024, the Wayanad district in Kerala experienced devastating landslides that resulted in significant loss of life and property.

    • The Chief Minister (Kerala) emphasized the need for a reevaluation of disaster preparedness and response approaches, highlighting the helplessness against natural calamities across the state.

    Kerala is no longer relatively disaster-free:

    • The state of Kerala which is bordered by the Arabian Sea and Western Ghats, was once viewed as disaster-free, which influenced its development patterns.
    • The frequency and intensity of disasters have surged in recent decades. Over 250 km of Kerala’s coastline is affected by erosion.
      • Further, the high population density in the Western Ghats exceeded its vulnerability to disasters.
      • Lowlands like Vembanad Lake, frequently experience flooding during monsoons.
    • The 2018 floods were labeled the “floods of the century” by the World Meteorological Organization.
    • Infrastructure development has often ignored natural drainage and slope stability, leading to increased disaster risks.

    Why a Comprehensive inventory mapping is needed?

    • Physical Geography of the Region: Tectonic activity generally correlates with landslide occurrences.
      • For example, the Wayanad region is characterized by deep gorges and ravines, which is prone to landslides.
    • Climate Change Impact: Rapid warming of the Arabian Sea increases risks of extreme weather events like floods and cyclones. For example, the Cyclone Ockhi in 2017.
    • Research Gaps: Current understanding of landslide causative factors is limited; a nuanced approach is necessary for effective disaster mitigation.
    • Monitoring Mechanisms: Establishing monitoring systems for rainfall and tremors can provide timely warnings to prevent loss of life.
    • Shrinking Safe Space: The “safe operating space” for communities in Kerala is diminishing due to increasing natural disasters.

    Need for a Paradigm Shift (Way Forward):

    • Need to work on Disaster Risk Zones: Develop disaster risk zones based on physical and social criteria within a social-ecological framework, aligned with watershed boundaries.
      • Strengthening the disaster risk governance and invest them in risk reduction to enhance resilience and preparedness would be helpful.
    • Comprehensive Approach: Emphasize all aspects of the disaster cycle: preparedness, resilience, risk reduction, mitigation, reconstruction, recovery, response, and relief.
      • The Sendai’s global framework highlights the State’s primary role in disaster risk reduction while advocating for shared responsibility with local governments, private sectors, and communities.
    • Quadruple Helix Model: Utilize a collaborative model involving community organizations, academia, government, and industry for effective disaster risk management.
      • Engage communities in creating disaster risk maps through a community-based disaster risk management approach.

    https://www.thehindu.com/opinion/op-ed/once-landslide-susceptibility-maps-surrounding-population-centres-are-ready-monitoring-the-triggering-mechanism-would-ensure-that-timely-warnings-are-provided/article68717843.ece