26 Apr 2026 bundleStory 3 of 5
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The ANDHRA PRADESH STATE DISASTER MANAGEMENT AUTHORITY (APSDMA) issued a SEVERE HEATWAVE WARNING for 14 mandals (concentrated in SRIKAKULAM and PARVATHIPURAM MANYAM districts) and heatwave conditions for 28 others — with over 207 mandals across the state recording temperatures exceeding 41°C, and SALUR in MANYAM DISTRICT recording the peak at 45.2°C; heatwaves — periods of abnormally high temperature departures from regional norms during the summer season — are estimated to cost India UP TO 2% OF ITS GDP ANNUALLY through productivity losses and revenue erosion, driven by climate change, anticyclonic circulation (large-scale air sinking that compresses and heats the lower atmosphere), the urban heat island effect, and ENSO/El Niño Modoki ocean-temperature variations; mitigation rests on early warning systems, public-health advisories, Heat Action Plans (HAPs), the National Infrastructure Pipeline (NIP) integrating disaster resilience, and the Resilience Cost-Benefit Analysis (RCBA) framework.

आंध्र प्रदेश राज्य आपदा प्रबंधन प्राधिकरण (APSDMA) ने 14 मंडलों (श्रीकाकुलम एवं पार्वतीपुरम मन्यम ज़िलों में केंद्रित) के लिए गंभीर लू चेतावनी एवं अन्य 28 के लिए लू स्थिति जारी की — राज्य भर में 207 से अधिक मंडलों ने 41°C से अधिक तापमान दर्ज किया, एवं मन्यम ज़िले के सालुर ने 45.2°C का शिखर दर्ज किया; लू (गर्मी की लहरें) — गर्मी के मौसम में क्षेत्रीय मानदंडों से असामान्य रूप से उच्च तापमान विचलन की अवधि — भारत को उत्पादकता हानि एवं राजस्व क्षरण के माध्यम से सालाना अपने सकल घरेलू उत्पाद का 2% तक खर्च करवा देती हैं, जो जलवायु परिवर्तन, प्रति-चक्रवाती परिसंचरण, शहरी ताप द्वीप प्रभाव, एवं ENSO/El Niño Modoki महासागर-तापमान विविधताओं से प्रेरित होती हैं; शमन प्रारंभिक चेतावनी प्रणाली, सार्वजनिक-स्वास्थ्य सलाह, हीट एक्शन प्लान (HAPs), राष्ट्रीय अवसंरचना पाइपलाइन (NIP) में आपदा-लचीलापन को एकीकृत करने, एवं लचीलापन लागत-लाभ विश्लेषण (RCBA) ढाँचे पर निर्भर करता है।

·Reportage on Andhra Pradesh State Disaster Management Authority (APSDMA) heatwave warning for 14 mandals in Srikakulam and Parvathipuram Manyam districts, with broader analysis of heatwave causes, impacts, and mitigation in India

Why in News

The ANDHRA PRADESH STATE DISASTER MANAGEMENT AUTHORITY (APSDMA) has ISSUED A SEVERE HEATWAVE WARNING for 14 MANDALS and heatwave conditions for 28 other mandals across the state. KEY DATA AND STATS: Recent extremes — over 207 MANDALS in Andhra Pradesh recorded temperatures EXCEEDING 41°C. Peak recorded temperature — SALUR in MANYAM DISTRICT recorded a maximum temperature of 45.2°C. Widespread impact — severe heat is currently impacting 14 mandals specifically in SRIKAKULAM and PARVATHIPURAM MANYAM districts. Historical trend — disasters like heatwaves are estimated to cost India UP TO 2% OF ITS GDP ANNUALLY while eroding government revenue. WHAT IS A HEATWAVE? A heatwave is a PERIOD OF ABNORMALLY HIGH TEMPERATURES, more than the normal maximum temperature, that occurs during the summer season. It is a condition of air temperature which becomes fatal to the human body when exposed. Qualitatively, it is defined based on the temperature thresholds over a region in terms of actual temperature or its departure from normal. INDIA METEOROLOGICAL DEPARTMENT (IMD) DEFINITION: For PLAINS — a heatwave is declared when the maximum temperature is at least 40°C, AND the departure from normal is 5-6°C (heatwave) or 7°C+ (severe heatwave). For HILLS — at least 30°C with similar departures. For COASTAL areas — at least 37°C. FACTORS CAUSING HEATWAVES: (1) CLIMATE CHANGE — the world is facing more frequent and extreme weather events due to shifting global climate patterns; (2) ANTICYCLONIC CIRCULATION — large-scale sinking of air which compresses and heats the lower atmosphere, preventing cloud formation and amplifying surface heat; (3) URBAN HEAT ISLAND EFFECT — urbanisation and use of concrete in cities trap heat, leading to higher localised temperatures compared to rural areas; (4) EL NIÑO MODOKI — variations in ocean temperatures (a Pacific Ocean phenomenon distinct from canonical El Niño) that can alter wind patterns and bring dry, hot air over the Indian subcontinent; (5) Western Disturbances absence; (6) Land-use change — deforestation, reduced green cover. CHALLENGES: (a) PUBLIC HEALTH RISKS — extreme heat and humidity increase the risk of heatstroke, dehydration, and related fatalities among vulnerable populations (elderly, children, outdoor workers, informal-sector labour); (b) IMPACT ON AGRICULTURE — farmers at high risk while working; cautioned against unsafe shelter under trees during associated thunderstorms; crop losses; (c) ECONOMIC PRODUCTIVITY — severe heat leads to reduced labour hours, particularly in outdoor sectors like construction and farming; (d) POWER GRID STRAIN — surges in cooling-system use can lead to grid overloads and frequent outages; (e) Water-resource stress; (f) Wildlife and ecosystem impacts. MITIGATION & RESPONSE: (i) EARLY WARNING SYSTEMS — APSDMA issues real-time press releases and warnings to specific districts and mandals to prepare the public; (ii) PUBLIC HEALTH ADVISORIES — government provides specific guidance like consuming lemon water, buttermilk, and coconut water for hydration; (iii) NATIONAL INFRASTRUCTURE PIPELINE (NIP) — integrating disaster resilience into infrastructure to protect assets from climate-related fiscal shocks; (iv) HEAT ACTION PLANS (HAPs) — implementation of state-level plans (Ahmedabad's HAP launched 2013 was India's first); (v) RESILIENCE COST-BENEFIT ANALYSIS (RCBA) — framework for prioritising heat-resilience investments; (vi) DATA-DRIVEN PLANNING — utilising climate and meteorological data for response. CONSTITUTIONAL/INSTITUTIONAL FRAMEWORK: India's disaster management architecture rests on the Disaster Management Act 2005; National Disaster Management Authority (NDMA) at apex (chaired by Prime Minister); State Disaster Management Authorities (SDMAs) at state level (chaired by Chief Minister) — APSDMA is one such; District Disaster Management Authorities (DDMAs) at district level. NDMA classified heatwave as a NATURAL HAZARD in 2016 — enabling state response funding. As of 2024-26, over 23 Indian states have notified heat action plans; the central government and Ministry of Earth Sciences (IMD) coordinate forecasting; state HAPs operationalise response.

At a Glance

Issuing authority
Andhra Pradesh State Disaster Management Authority (APSDMA)
Warning scope
Severe heatwave warning for 14 mandals; heatwave conditions for 28 other mandals
Most affected districts
Srikakulam and Parvathipuram Manyam (Andhra Pradesh)
State-wide extreme
207+ mandals recorded temperatures exceeding 41°C
Peak temperature
Salur in Manyam district — 45.2°C
Economic cost
Heatwaves estimated to cost India UP TO 2% OF GDP annually
IMD heatwave threshold (plains)
Max temp ≥40°C AND departure from normal of 5-6°C (heatwave) or 7°C+ (severe)
Cause 1 — Climate change
Frequency and intensity rising globally
Cause 2 — Anticyclonic circulation
Large-scale air sinking compresses and heats lower atmosphere
Cause 3 — Urban Heat Island
Concrete-trapped heat in cities
Cause 4 — El Niño Modoki
Pacific ocean-temperature variation altering wind patterns
Mitigation framework
Early warning + Heat Action Plans (HAPs) + NIP resilience + RCBA + public advisories
Disaster framework
DM Act 2005; NDMA (PM-chaired) → SDMA (CM-chaired) → DDMA; heatwave classified as natural hazard 2016
First HAP in India
Ahmedabad — 2013
Key Fact

The ANDHRA PRADESH STATE DISASTER MANAGEMENT AUTHORITY (APSDMA) issued a SEVERE HEATWAVE WARNING for 14 MANDALS and heatwave conditions for 28 others. KEY DATA: over 207 MANDALS in AP recorded temperatures exceeding 41°C; SALUR in MANYAM DISTRICT recorded the peak at 45.2°C; severe heat is impacting 14 mandals in SRIKAKULAM and PARVATHIPURAM MANYAM districts; heatwaves cost India UP TO 2% OF GDP ANNUALLY. HEATWAVE DEFINITION: A period of abnormally high temperatures, more than the normal maximum, occurring in summer; defined by IMD using temperature thresholds. IMD CRITERIA: For PLAINS — maximum temperature at least 40°C with departure from normal of 5-6°C (heatwave) or 7°C+ (severe heatwave). For HILLS — at least 30°C; for COASTAL areas — at least 37°C. FACTORS CAUSING HEATWAVES: (1) CLIMATE CHANGE — accelerating frequency and intensity of extreme weather; (2) ANTICYCLONIC CIRCULATION — large-scale sinking of air compresses and heats the lower atmosphere, preventing cloud formation; (3) URBAN HEAT ISLAND EFFECT — concrete-dense urbanisation traps heat, raising localised temperatures relative to rural surroundings; (4) EL NIÑO MODOKI — Pacific Ocean temperature variation (distinct from canonical El Niño — warming concentrated in central Pacific) altering wind patterns and bringing dry hot air over India; (5) absence of Western Disturbances; (6) deforestation and reduced green cover. CHALLENGES: (a) PUBLIC HEALTH RISKS — heatstroke, dehydration, fatalities; vulnerable groups include elderly, children, outdoor workers, informal-sector labour, pregnant women; (b) AGRICULTURAL IMPACT — farmers at high risk; crop losses; livestock stress; thunderstorm-shelter risks; (c) ECONOMIC PRODUCTIVITY — reduced labour hours in construction, farming, outdoor work; (d) POWER GRID STRAIN — cooling-system surges cause overloads and outages; (e) Water resource stress; (f) Wildlife/ecosystem impacts. MITIGATION & RESPONSE LANDSCAPE: (i) EARLY WARNING SYSTEMS — APSDMA real-time press releases and mandal-level warnings; IMD national forecasting; (ii) PUBLIC HEALTH ADVISORIES — hydration guidance (lemon water, buttermilk, coconut water), avoidance of midday outdoor exposure, ORS provisioning; (iii) NATIONAL INFRASTRUCTURE PIPELINE (NIP) — integrating disaster resilience into infrastructure to protect assets from climate-related fiscal shocks; (iv) HEAT ACTION PLANS (HAPs) — Ahmedabad's HAP launched 2013 was India's FIRST; over 23 states now have HAPs (per recent counts); (v) RESILIENCE COST-BENEFIT ANALYSIS (RCBA) framework — prioritising investments based on cost-benefit of resilience interventions; (vi) DATA-DRIVEN PLANNING — climate/meteorological data for response. CONSTITUTIONAL/INSTITUTIONAL FRAMEWORK: India's disaster management rests on the DISASTER MANAGEMENT ACT 2005. Three-tier structure: NATIONAL DISASTER MANAGEMENT AUTHORITY (NDMA) at apex, chaired by the PRIME MINISTER, with up to 9 members; STATE DISASTER MANAGEMENT AUTHORITIES (SDMAs) chaired by Chief Minister — APSDMA is the AP state authority; DISTRICT DISASTER MANAGEMENT AUTHORITIES (DDMAs) chaired by District Magistrate/Collector. NATIONAL EXECUTIVE COMMITTEE (NEC) and STATE EXECUTIVE COMMITTEE (SEC) operationalise plans. NDMA CLASSIFIED HEATWAVE AS A NATURAL HAZARD IN 2016 — enabling state-level response funding from State Disaster Response Fund (SDRF). India's heatwave-prone regions: Indo-Gangetic plains, Vidarbha, Marathwada, Telangana, Rayalaseema (AP), Odisha, Jharkhand, Gujarat — increasingly extending to coastal Andhra Pradesh, Tamil Nadu, Kerala. CLIMATE CONTEXT: India's average temperature has risen approximately 0.7°C from 1901-2018; the Indian Network for Climate Change Assessment (INCCA) projects increasing heatwave frequency. India's Nationally Determined Contribution (NDC) under the Paris Agreement commits to net-zero by 2070 and 50% non-fossil-fuel power capacity by 2030. THE 2026 EVENT in Andhra Pradesh — Salur 45.2°C; 207+ mandals over 41°C; 14 severe-warning mandals — illustrates the recurring nature of heatwave events and the increasing role of state-level disaster authorities in real-time response.

आंध्र प्रदेश राज्य आपदा प्रबंधन प्राधिकरण (APSDMA) ने 14 मंडलों के लिए गंभीर लू चेतावनी एवं 28 अन्य के लिए लू स्थिति जारी की। मुख्य डेटा: AP के 207+ मंडलों ने 41°C से अधिक तापमान दर्ज किया; मन्यम ज़िले के सालुर ने 45.2°C का शिखर दर्ज किया; गंभीर गर्मी श्रीकाकुलम एवं पार्वतीपुरम मन्यम ज़िलों के 14 मंडलों को प्रभावित कर रही है; लू भारत को सालाना GDP का 2% तक खर्च करवा देती है। परिभाषा: ग्रीष्म ऋतु में सामान्य अधिकतम तापमान से अधिक तापमान की अवधि। IMD मानदंड: मैदानों के लिए — अधिकतम तापमान कम से कम 40°C; सामान्य से 5-6°C विचलन (लू) अथवा 7°C+ (गंभीर लू); पहाड़ियों के लिए कम से कम 30°C; तटीय क्षेत्रों के लिए कम से कम 37°C। कारक: (1) जलवायु परिवर्तन (2) प्रति-चक्रवाती परिसंचरण — हवा का बड़े पैमाने पर डूबना (3) शहरी ताप द्वीप प्रभाव (4) El Niño Modoki — प्रशांत महासागर का तापमान विचलन (5) पश्चिमी विक्षोभों की अनुपस्थिति। चुनौतियाँ: सार्वजनिक स्वास्थ्य जोख़िम, कृषि प्रभाव, आर्थिक उत्पादकता, बिजली ग्रिड दबाव। शमन: प्रारंभिक चेतावनी, हीट एक्शन प्लान (HAPs — पहला अहमदाबाद 2013 में), NIP, RCBA। ढाँचा: आपदा प्रबंधन अधिनियम 2005; NDMA (PM-अध्यक्ष) → SDMA (CM-अध्यक्ष — APSDMA) → DDMA। 2016 में NDMA ने लू को प्राकृतिक आपदा के रूप में वर्गीकृत किया।

AP heatwave 2026 — at a glance
AP लू 2026 — एक नज़र में
14 mandals
Severe heatwave warning (Srikakulam + Manyam)
गंभीर लू चेतावनी
45.2°C
Peak — Salur in Manyam district
सालुर शिखर तापमान
207+ mandals
Recorded over 41°C across AP
207+ मंडल 41°C से ऊपर
~2% GDP
Annual cost of heatwaves to India
भारत को सालाना लागत
India's disaster management hierarchy
भारत का आपदा प्रबंधन ढाँचा
Disaster Management Act, 2005 framework
आपदा प्रबंधन अधिनियम 2005 ढाँचा
  • NDMA (apex)
    NDMA (शीर्ष)
    Chaired by PRIME MINISTER; up to 9 members; HQ New Delhi· PM अध्यक्ष; नई दिल्ली
  • SDMA (state)
    SDMA (राज्य)
    Chaired by CHIEF MINISTER — APSDMA is AP's; up to 8 members· CM अध्यक्ष — APSDMA = AP
  • DDMA (district)
    DDMA (ज़िला)
    Chaired by District Magistrate / Collector· ज़िलाधिकारी अध्यक्ष
  • Heatwave classification
    लू वर्गीकरण
    NDMA classified heatwave as NATURAL HAZARD in 2016 — enables SDRF· 2016 में प्राकृतिक आपदा
  • First Heat Action Plan
    पहला हीट एक्शन प्लान
    Ahmedabad — 2013, post 2010 heatwave deaths· अहमदाबाद — 2013
IMD heatwave thresholds by region
IMD लू सीमाएँ
Region
क्षेत्र
Min max-temp
न्यूनतम अधिकतम तापमान
Departure for heatwave
लू के लिए विचलन
Plains
मैदान
≥40°C
≥40°C
5-6°C (HW); 7°C+ (severe)
5-6°C / 7°C+
Hills
पहाड़ियाँ
≥30°C
≥30°C
5-6°C / 7°C+
5-6°C / 7°C+
Coastal areas
तटीय क्षेत्र
≥37°C
≥37°C
5-6°C / 7°C+
5-6°C / 7°C+

Static GK

  • •Heatwave (IMD definition): Period of abnormally high temperatures during summer; for PLAINS — max temp ≥40°C with departure from normal 5-6°C (heatwave) or ≥7°C (severe heatwave); for HILLS ≥30°C; for COASTAL areas ≥37°C
  • •El Niño Modoki: Pacific Ocean temperature variation distinct from canonical El Niño — warming concentrated in CENTRAL Pacific (vs eastern Pacific in canonical El Niño); 'Modoki' is Japanese for 'similar but different'; alters Indian monsoon and creates hot dry conditions
  • •Anticyclonic circulation: Atmospheric high-pressure system with descending air; compression heats the lower atmosphere; suppresses cloud formation and rainfall; major contributor to heatwave intensification
  • •Urban Heat Island (UHI) effect: Phenomenon where urban areas are significantly warmer than surrounding rural areas due to human activity, concrete, asphalt, reduced vegetation; can be 1-3°C warmer at night
  • •Disaster Management Act, 2005: Comprehensive Indian legislation establishing the disaster management framework; created NDMA, SDMAs, DDMAs; enacted post-2004 Indian Ocean tsunami; enabling statute for State Disaster Response Funds
  • •National Disaster Management Authority (NDMA): Apex disaster management body in India; established under DM Act 2005; CHAIRED BY THE PRIME MINISTER; up to 9 members; HQ New Delhi; develops policies, plans, guidelines; coordinates response with central ministries
  • •State Disaster Management Authority (SDMA): State-level disaster authority under DM Act 2005; chaired by CHIEF MINISTER of the state; APSDMA = Andhra Pradesh's SDMA; up to 8 members
  • •District Disaster Management Authority (DDMA): District-level disaster authority under DM Act 2005; chaired by District Magistrate / Collector; co-chaired by elected District Council Chair (in some states); operationalises disaster response at district level
  • •Heatwave classified as natural hazard: NDMA classified heatwave as a NATURAL HAZARD IN 2016 — enabling states to draw on State Disaster Response Fund (SDRF) for heatwave response
  • •Heat Action Plan (HAP): State or city-level plan for heat-mitigation; first in India was AHMEDABAD'S HAP LAUNCHED IN 2013 (in response to 2010 heatwave deaths); over 23 Indian states/cities now have HAPs
  • •National Infrastructure Pipeline (NIP): Government of India initiative launched 2019 to provide world-class infrastructure across the country; over ₹100 lakh crore investment envelope; integrates disaster-resilience principles into infrastructure planning
  • •Resilience Cost-Benefit Analysis (RCBA): Framework for evaluating cost-benefit of climate-resilience investments to prioritise disaster-mitigation spending; informs HAP and infrastructure decisions
  • •India Meteorological Department (IMD): National meteorological service of India under the Ministry of Earth Sciences; established 1875; HQ New Delhi; issues daily and seasonal weather forecasts including heatwave warnings; runs the integrated Multi-Hazard Early Warning Service
  • •Salur and Manyam district: Salur is a town in Parvathipuram Manyam district (newly carved out in 2022 from Vizianagaram district) of Andhra Pradesh; predominantly tribal area; recorded peak 45.2°C in current heatwave
  • •Srikakulam and Parvathipuram Manyam districts: Both located in northern coastal Andhra Pradesh; coastal-and-foothill terrain; severe heat impact in 14 mandals across these two districts
  • •India's heatwave-prone regions: Indo-Gangetic plains (UP, Bihar, Punjab, Haryana, Delhi-NCR, Rajasthan); Vidarbha (Maharashtra); Marathwada; Telangana; Rayalaseema (AP); Odisha; Jharkhand; Gujarat — increasingly extending to coastal AP, Tamil Nadu, Kerala
  • •India's NDC under Paris Agreement: Net-zero by 2070; 50% non-fossil-fuel installed power capacity by 2030; 45% reduction in emission intensity of GDP by 2030 (vs 2005)

Timeline

  1. 1875
    India Meteorological Department (IMD) established — national meteorological service.
  2. 2004
    Indian Ocean tsunami — catalyst for India's modern disaster management framework.
  3. 2005
    Disaster Management Act, 2005 enacted; NDMA, SDMAs, DDMAs established.
  4. 2010
    Severe Ahmedabad heatwave caused approximately 1,344 excess deaths — catalysed India's first Heat Action Plan.
  5. 2013
    Ahmedabad launches India's FIRST HEAT ACTION PLAN (HAP) — pilot for state and city HAPs.
  6. 2015
    Severe heatwave in India — over 2,500 deaths reported in Andhra Pradesh and Telangana.
  7. 2016
    NDMA CLASSIFIED HEATWAVE AS A NATURAL HAZARD — enables State Disaster Response Fund (SDRF) use for heatwave response.
  8. 2019
    National Infrastructure Pipeline (NIP) launched — integrates disaster resilience into infrastructure planning.
  9. 2022
    Parvathipuram Manyam district carved out from Vizianagaram in Andhra Pradesh.
  10. 2023-24
    India experiences extended heatwave seasons; Multi-Hazard Early Warning System operationalised by IMD/MoES.
  11. April 2026
    APSDMA issues severe heatwave warning for 14 mandals (Srikakulam, Parvathipuram Manyam); 207+ mandals over 41°C; Salur peaks at 45.2°C.
Mnemonic · Memory Hooks
  • →Issuing authority = APSDMA = Andhra Pradesh State Disaster Management Authority. Chaired by AP CHIEF MINISTER.
  • →Warning scope = SEVERE HEATWAVE WARNING for 14 MANDALS; HEATWAVE CONDITIONS for 28 other mandals.
  • →Most affected districts = SRIKAKULAM + PARVATHIPURAM MANYAM (northern coastal AP). Parvathipuram Manyam carved from Vizianagaram in 2022.
  • →State-wide extreme = 207+ MANDALS over 41°C.
  • →Peak temperature = SALUR in MANYAM district = 45.2°C.
  • →Economic cost = up to 2% OF INDIA'S GDP ANNUALLY through productivity losses + revenue erosion.
  • →IMD HEATWAVE CRITERIA — for PLAINS: max temp ≥40°C AND departure from normal 5-6°C (heatwave) or 7°C+ (severe). For HILLS: ≥30°C. For COASTAL: ≥37°C.
  • →4 KEY CAUSES: (1) CLIMATE CHANGE — global temperature rise (2) ANTICYCLONIC CIRCULATION — large-scale air sinking, compresses + heats lower atmosphere, prevents cloud formation (3) URBAN HEAT ISLAND EFFECT — concrete traps heat in cities (4) EL NIÑO MODOKI — Pacific Ocean variation (warming in CENTRAL Pacific, distinct from canonical El Niño with eastern Pacific warming). 'Modoki' = Japanese for 'similar but different'.
  • →CHALLENGES: (1) Public health — heatstroke, dehydration; vulnerable: elderly + children + outdoor workers + informal labour (2) Agriculture — crop losses + farmer health risk (3) Economic productivity — reduced labour hours in construction, farming (4) Power grid strain — cooling-system surges (5) Water-resource stress (6) Wildlife/ecosystem impacts.
  • →MITIGATION: (1) EARLY WARNING SYSTEMS — APSDMA mandal-level real-time press releases (2) PUBLIC HEALTH ADVISORIES — hydration (lemon water + buttermilk + coconut water) (3) NATIONAL INFRASTRUCTURE PIPELINE (NIP) — disaster resilience integration; ₹100+ lakh crore envelope (4) HEAT ACTION PLANS (HAPs) — first AHMEDABAD 2013 after 2010 deadly heatwave; 23+ states now have HAPs (5) RESILIENCE COST-BENEFIT ANALYSIS (RCBA) framework (6) DATA-DRIVEN PLANNING.
  • →DISASTER FRAMEWORK: (1) Disaster Management Act 2005 — comprehensive legislation post-2004 Indian Ocean tsunami (2) NDMA = National Disaster Management Authority — APEX. Chaired by PRIME MINISTER. Up to 9 members. HQ New Delhi (3) SDMA = State Disaster Management Authority — chaired by CHIEF MINISTER. APSDMA is AP's SDMA (4) DDMA = District Disaster Management Authority — chaired by District Magistrate / Collector (5) NEC = National Executive Committee. SEC = State Executive Committee.
  • →NDMA CLASSIFIED HEATWAVE AS NATURAL HAZARD IN 2016 — enables State Disaster Response Fund (SDRF) for heatwave response.
  • →First HAP in India = AHMEDABAD 2013. Catalysed by 2010 Ahmedabad heatwave (~1,344 excess deaths).
  • →IMD = India Meteorological Department. Established 1875. Under Ministry of Earth Sciences. HQ New Delhi. Issues heatwave warnings + Multi-Hazard Early Warning System.
  • →India's heatwave-prone regions: Indo-Gangetic plains + Vidarbha + Marathwada + Telangana + Rayalaseema + Odisha + Jharkhand + Gujarat — increasingly extending to coastal AP + Tamil Nadu + Kerala.
  • →India's NDC (Paris): NET-ZERO by 2070; 50% NON-FOSSIL POWER CAPACITY by 2030; 45% emission-intensity reduction (vs 2005) by 2030.

Exam Angles

SSC / Railway

The Andhra Pradesh State Disaster Management Authority (APSDMA) issued a severe heatwave warning for 14 mandals (Srikakulam and Parvathipuram Manyam districts) and heatwave conditions for 28 others; over 207 mandals recorded temperatures exceeding 41°C with Salur in Manyam district peaking at 45.2°C; heatwaves cost India up to 2% of GDP annually and are caused by climate change, anticyclonic circulation, urban heat island effect, and El Niño Modoki; mitigation rests on Heat Action Plans (HAPs — first in Ahmedabad 2013), NIP resilience integration, RCBA framework, and the disaster-management hierarchy under the DM Act 2005 (NDMA-PM chaired → SDMA-CM chaired → DDMA), with NDMA having classified heatwave as a natural hazard in 2016.

Practice (3)

Q1. Per IMD criteria, a HEATWAVE in plains regions of India is declared when the maximum temperature is at least:

  1. A.35°C with 3-4°C departure from normal
  2. B.40°C with 5-6°C departure from normal
  3. C.30°C with 5-6°C departure from normal
  4. D.37°C with 7°C+ departure from normal
tap to reveal answer

Answer: B. 40°C with 5-6°C departure from normal

Per India Meteorological Department (IMD) criteria, for PLAINS regions a heatwave is declared when the maximum temperature is at least 40°C AND the departure from normal is 5-6°C (heatwave) or 7°C+ (severe heatwave). For HILLS, the threshold is at least 30°C; for COASTAL areas, at least 37°C.

Q2. Which Indian city launched the COUNTRY'S FIRST Heat Action Plan (HAP) in 2013, in response to the deadly 2010 heatwave?

  1. A.Delhi
  2. B.Ahmedabad
  3. C.Mumbai
  4. D.Chennai
tap to reveal answer

Answer: B. Ahmedabad

AHMEDABAD launched India's FIRST Heat Action Plan (HAP) in 2013, in response to the 2010 Ahmedabad heatwave that caused approximately 1,344 excess deaths. The Ahmedabad HAP became the model for subsequent state and city HAPs across India. As of recent counts, over 23 Indian states have notified HAPs.

Q3. The National Disaster Management Authority (NDMA), established under the Disaster Management Act 2005, is chaired by:

  1. A.The Home Minister
  2. B.The Prime Minister
  3. C.The President
  4. D.The Cabinet Secretary
tap to reveal answer

Answer: B. The Prime Minister

The NDMA is chaired by the PRIME MINISTER OF INDIA, with up to 9 members. It is the apex body for disaster management in India under the Disaster Management Act, 2005. State Disaster Management Authorities (SDMAs) — including APSDMA — are chaired by respective Chief Ministers; District Disaster Management Authorities (DDMAs) are chaired by District Magistrates/Collectors.

UPSC Mains
GS-III: Disaster and disaster managementGS-III: Conservation, environmental pollution and degradation, environmental impact assessmentGS-III: Indian Economy and issues relating to planning, mobilization of resources, growth, developmentGS-III: Climate change and India's responseGS-II: Government policies and interventions for development in various sectorsGS-I: Salient features of world's physical geography (climatology, atmospheric circulation)

The April 2026 APSDMA severe heatwave warning for 14 mandals in Srikakulam and Parvathipuram Manyam districts — with 207+ mandals across Andhra Pradesh recording temperatures over 41°C and Salur in Manyam district peaking at 45.2°C — is the latest manifestation of India's intensifying heatwave crisis. Heatwaves cost India UP TO 2% OF GDP ANNUALLY through productivity losses, agricultural damage, public-health expenditure, and revenue erosion. INDIAN HEATWAVE FRAMEWORK: A heatwave is defined by IMD as a period of abnormally high temperatures during summer. For PLAINS — max temp ≥40°C with departure from normal of 5-6°C (heatwave) or ≥7°C (severe). For HILLS — ≥30°C; for COASTAL areas — ≥37°C. KEY CAUSES intersect physical and anthropogenic factors: (1) CLIMATE CHANGE — global temperature rise increases heatwave frequency, intensity, and duration; (2) ANTICYCLONIC CIRCULATION — large-scale subsiding air compresses and heats the lower atmosphere, suppressing clouds and rainfall; (3) URBAN HEAT ISLAND (UHI) effect — concrete-dense urbanisation traps heat, creating 1-3°C warmer urban-rural gradients especially at night; (4) EL NIÑO MODOKI — Pacific Ocean temperature variation with warming concentrated in central Pacific (vs eastern Pacific in canonical El Niño), altering Indian monsoon and creating dry hot conditions; (5) absence of Western Disturbances; (6) deforestation and reduced green cover. CHALLENGES are multidimensional: (a) public health — heatstroke, dehydration, cardiovascular stress; mortality concentrated in elderly, children, outdoor workers, informal-sector labour, pregnant women; (b) agriculture — crop losses, livestock stress, farmer health risk; (c) economic productivity — reduced labour hours in construction, farming, outdoor work; (d) power grid strain — cooling-system surges cause overloads and outages; (e) water-resource stress; (f) wildlife/ecosystem disruption. MITIGATION FRAMEWORK rests on multiple pillars: (i) EARLY WARNING SYSTEMS — IMD national forecasting + APSDMA-type state-level mandal-specific warnings + Multi-Hazard Early Warning System; (ii) HEAT ACTION PLANS (HAPs) — Ahmedabad's HAP launched 2013 was India's FIRST (in response to 2010 deaths), now 23+ states/cities have HAPs; (iii) PUBLIC HEALTH ADVISORIES — hydration guidance, midday-exposure avoidance, ORS provisioning, cooling centres; (iv) NATIONAL INFRASTRUCTURE PIPELINE (NIP) — integrating disaster resilience into infrastructure planning, ₹100+ lakh crore envelope; (v) RESILIENCE COST-BENEFIT ANALYSIS (RCBA) — framework for prioritising heat-resilience investments; (vi) DATA-DRIVEN PLANNING — climate, meteorological, and demographic data integration. INSTITUTIONAL ARCHITECTURE under the DISASTER MANAGEMENT ACT 2005 (enacted post-2004 Indian Ocean tsunami): NDMA at apex (PM-chaired, up to 9 members, HQ New Delhi); SDMAs at state level (CM-chaired) — APSDMA is AP's; DDMAs at district level (DM/Collector-chaired); National and State Executive Committees operationalise plans. NDMA CLASSIFIED HEATWAVE AS A NATURAL HAZARD IN 2016, enabling SDRF (State Disaster Response Fund) deployment for heatwave response. INDIA'S CLIMATE COMMITMENTS under the Paris Agreement (NDC): NET-ZERO by 2070; 50% non-fossil-fuel installed power capacity by 2030; 45% reduction in emission intensity of GDP by 2030 (vs 2005). HEATWAVE-PRONE REGIONS: Indo-Gangetic plains, Vidarbha, Marathwada, Telangana, Rayalaseema (AP), Odisha, Jharkhand, Gujarat — increasingly extending to coastal AP, Tamil Nadu, Kerala. The 2024 Lok Sabha elections occurred amid intense heatwaves with multiple polling-station deaths reported, intensifying policy debate. POLICY THEMES: (a) federalism in disaster management — Centre-State-District coordination; (b) climate-adaptation financing — international finance, NIP, RCBA; (c) urban planning and UHI mitigation; (d) labour rights and outdoor-worker protection; (e) agricultural resilience and crop-cycle adaptation; (f) heatwave-specific legal-protection framework debates (no national heatwave legislation yet; HAPs are administrative). For UPSC, the topic spans GS-III (disaster management, environment, economy, climate change), GS-II (government interventions, federalism), and GS-I (physical geography and atmospheric circulation).

Dimensions
  • Definition and IMD criteriaPlains ≥40°C + 5-6°C/7°C+ departure; Hills ≥30°C; Coastal ≥37°C — context-specific thresholds.
  • Climate change as primary driverGlobal temperature rise increases heatwave frequency, intensity, duration — IPCC/INCCA projections.
  • Atmospheric mechanismAnticyclonic circulation + absent Western Disturbances + dry continental air = compression heating.
  • Urban Heat Island effectConcrete-dense cities 1-3°C warmer than rural; especially severe at night; mitigation through green cover, cool roofs.
  • El Niño ModokiCentral-Pacific warming variant — distinct from canonical El Niño; alters Indian monsoon and creates dry hot conditions.
  • Economic cost (~2% GDP)Productivity losses + agricultural damage + health expenditure + revenue erosion.
  • Public-health vulnerabilityMortality concentrated in elderly, children, outdoor workers, informal-sector labour — equity concern.
  • Disaster Management Act 2005 frameworkNDMA-PM chaired → SDMA-CM chaired → DDMA — three-tier; NDMA classified heatwave as natural hazard 2016.
  • Heat Action Plans (HAPs)First Ahmedabad 2013; 23+ states now; varying quality — funding, monitoring, mitigation specifics.
  • NIP and RCBAInfrastructure resilience integration; cost-benefit framework for heat-resilience investments.
  • Climate-adaptation financingInternational finance (Adaptation Fund, GCF) + domestic budget + private investment + NDC alignment.
  • Federalism in heatwave responseIMD (Centre) forecasts; SDMA-DDMA operate; HAPs are state-level — coordination challenges.
  • Future trajectoryHeatwave-prone regions expanding to coastal areas; longer durations; need for adaptive infrastructure and labour-protection.
Challenges
  • Climate change accelerating heatwave frequency, intensity, and duration.
  • Urban Heat Island effect intensified by concrete-dense urbanisation.
  • Disproportionate mortality and morbidity among elderly, children, outdoor workers, informal-sector labour.
  • Power grid strain from cooling-demand surges leading to outages.
  • Agricultural losses and farmer health risks.
  • Economic productivity loss — up to 2% of GDP annually.
  • Water-resource stress amplifying drought-heatwave compound risks.
  • Heatwave-prone regions expanding to coastal Andhra Pradesh, Tamil Nadu, Kerala — beyond historical core.
  • HAP quality varies across states — implementation and monitoring gaps.
  • No national heatwave legislation — HAPs are administrative, not statutory.
  • Outdoor-worker protection legal framework underdeveloped.
  • Climate-adaptation financing gaps for state and city HAPs.
  • Federalism coordination between Centre (IMD), State (SDMA), and District (DDMA) authorities.
  • Public awareness and behaviour-change reach limitations.
Way Forward
  • Strengthen IMD's Multi-Hazard Early Warning System and mandal-level forecasting.
  • Mandate HAPs in all states and cities; establish quality benchmarks and monitoring.
  • Develop a national heatwave legislation framework for outdoor-worker protection and HAP statutory backing.
  • Scale Ahmedabad-model HAPs nationally with adaptation to local climate, demographics.
  • Expand cooling centres and shaded public spaces in urban areas.
  • Urban planning reforms — green cover, cool roofs, water bodies, ventilation corridors to reduce UHI.
  • Integrate disaster resilience into NIP infrastructure projects.
  • Develop RCBA-based prioritisation of heat-resilience investments.
  • Strengthen labour rights — work-hour adjustments, mandatory rest periods, hydration provisioning for outdoor workers.
  • Health-system preparedness — hospital surge capacity, ORS provisioning, vulnerable-group registries.
  • Climate-adaptation financing through international and domestic channels.
  • Behavioural awareness campaigns in vulnerable communities.
  • Inter-state coordination for heatwave response in shared regions (e.g., Telangana-AP).
  • Research and data integration — climate, demographics, health outcomes for evidence-based policy.
  • Continued NDC commitment to net-zero by 2070 and 50% non-fossil capacity by 2030 to address root cause.
Mains Q · 250w

The increasing frequency and intensity of heatwaves in India — including the recent severe warning by APSDMA for 14 mandals in Andhra Pradesh — point to a deepening climate crisis with significant socio-economic impacts. Discuss the causes of heatwaves in India and the effectiveness of current institutional and policy responses. (250 words)

Intro: The April 2026 APSDMA severe heatwave warning for 14 mandals in Srikakulam and Parvathipuram Manyam districts — with 207+ AP mandals exceeding 41°C and Salur peaking at 45.2°C — reflects the intensifying heatwave crisis estimated to cost India up to 2% of GDP annually through productivity losses, health costs, and agricultural damage.

  • IMD definition: Plains heatwave when max temp ≥40°C with 5-6°C/7°C+ departure from normal; Hills ≥30°C; Coastal ≥37°C.
  • Causes: (1) Climate change — accelerating frequency, intensity, duration; (2) Anticyclonic circulation — air sinking compresses and heats the lower atmosphere; (3) Urban Heat Island effect — concrete-dense cities trap heat, 1-3°C warmer than rural; (4) El Niño Modoki — central-Pacific warming distinct from canonical El Niño; (5) absence of Western Disturbances; (6) deforestation.
  • Impacts: Public health (elderly, children, outdoor workers, informal labour); agriculture (crop losses, livestock stress); economic productivity (~2% GDP); power grid strain; water stress; ecosystem disruption.
  • Institutional framework: Disaster Management Act 2005 — NDMA (PM-chaired) → SDMA (CM-chaired, e.g., APSDMA) → DDMA. NDMA classified heatwave as natural hazard 2016, enabling SDRF deployment.
  • Policy responses: (1) Early warning — IMD + APSDMA-type mandal-specific alerts; (2) Heat Action Plans — first Ahmedabad 2013, now 23+ states; (3) Public-health advisories; (4) National Infrastructure Pipeline (NIP) integrating disaster resilience; (5) Resilience Cost-Benefit Analysis (RCBA) framework.
  • Effectiveness gaps: HAP quality varies; no national heatwave legislation; outdoor-worker protection underdeveloped; climate-adaptation financing gaps; UHI mitigation in urban planning slow.
  • Way forward: National heatwave legislation; uniform HAP standards; cooling centres; urban green cover; outdoor-worker rights; labour-hour adjustments; health-system surge capacity; NDC commitment (net-zero 2070, 50% non-fossil by 2030).

Conclusion: Heatwaves are no longer episodic disasters — they are recurring climate events demanding statutory, institutional, and infrastructural deepening. India's HAP movement is promising but uneven; sustained NDMA-IMD-SDMA-DDMA coordination, climate-adaptation financing, and labour-rights protection are essential to safeguard public health and economic stability.

Common Confusions

  • Trap · Issuing authority — APSDMA full form

    Correct: ANDHRA PRADESH STATE DISASTER MANAGEMENT AUTHORITY. State-level body chaired by CM. Not 'AP State Police Disaster Authority' or similar.

  • Trap · Number of severe-warning vs heatwave-condition mandals

    Correct: Severe heatwave warning = 14 mandals. Heatwave conditions = 28 OTHER mandals. Two distinct counts. Don't conflate.

  • Trap · Districts vs mandals affected

    Correct: Severe heat impacting 14 mandals in SRIKAKULAM and PARVATHIPURAM MANYAM districts (these are 2 districts; 14 mandals are subdivisions). Mandals are sub-district administrative units in AP/Telangana.

  • Trap · Salur location — which district?

    Correct: SALUR is in PARVATHIPURAM MANYAM district. Often shortened to 'Manyam district' in news. Not Srikakulam, not Vizianagaram (though Manyam was carved from Vizianagaram in 2022).

  • Trap · Peak temperature value

    Correct: 45.2°C — in Salur, Manyam district. Not 45.0°C exactly. Specific value matters for reporting accuracy.

  • Trap · IMD heatwave threshold for plains

    Correct: Max temp ≥40°C AND departure from normal 5-6°C (heatwave) or ≥7°C (severe heatwave). NOT 35°C or 45°C absolute. Both conditions matter.

  • Trap · El Niño vs El Niño Modoki

    Correct: Canonical EL NIÑO = warming concentrated in EASTERN Pacific; El Niño Modoki = warming concentrated in CENTRAL Pacific. 'Modoki' = Japanese for 'similar but different'. Both reduce Indian monsoon but Modoki has different teleconnection.

  • Trap · Anticyclonic circulation effect

    Correct: Anticyclones = HIGH-PRESSURE systems with DESCENDING air. Compression heats the lower atmosphere; suppresses cloud formation. NOT cyclonic or low-pressure systems.

  • Trap · Urban Heat Island effect intensity

    Correct: Cities can be 1-3°C warmer than rural surroundings — especially at night. Caused by concrete, asphalt, reduced vegetation, vehicle/AC heat. NOT 10°C warmer (overstated).

  • Trap · First HAP in India — city and year

    Correct: AHMEDABAD launched India's FIRST HAP in 2013. Catalysed by 2010 Ahmedabad heatwave (~1,344 excess deaths). NOT Delhi, NOT Mumbai. NOT 2010 (when deaths occurred); 2013 was when HAP launched.

  • Trap · NDMA chairperson

    Correct: Chaired by the PRIME MINISTER OF INDIA. NOT Home Minister or President. Up to 9 members. HQ New Delhi. Established under DM Act 2005.

  • Trap · SDMA chairperson

    Correct: Chaired by CHIEF MINISTER of the state. APSDMA chair = AP CM. NOT Governor or Home Minister. Up to 8 members.

  • Trap · DDMA chairperson

    Correct: Chaired by DISTRICT MAGISTRATE / COLLECTOR. In some states co-chaired by elected District Council Chair. NOT Block Development Officer.

  • Trap · Year heatwave classified as natural hazard

    Correct: NDMA classified heatwave as NATURAL HAZARD in 2016. NOT 2005 (when DM Act enacted) or 2010. The 2016 classification enabled State Disaster Response Fund (SDRF) for heatwave response.

  • Trap · Disaster Management Act enactment year

    Correct: 2005. Enacted post-2004 Indian Ocean tsunami (the catalyst event). NOT 2002 or 2010.

  • Trap · IMD establishment year and ministry

    Correct: Established 1875. Under Ministry of EARTH SCIENCES (not Ministry of Environment). HQ New Delhi. National meteorological service. Issues heatwave warnings, weather forecasts.

  • Trap · Parvathipuram Manyam district carving

    Correct: Carved out from VIZIANAGARAM district in 2022 in Andhra Pradesh's district reorganisation. NOT 2014 (when AP-Telangana bifurcation happened). Specific to 2022 district restructuring.

  • Trap · Economic cost of heatwaves

    Correct: Up to 2% of India's GDP ANNUALLY through productivity losses + revenue erosion. NOT 0.5% or 5%. Significant macroeconomic impact.

  • Trap · India's NDC commitments

    Correct: NET-ZERO by 2070 (NOT 2050 as in some EU/US targets); 50% NON-FOSSIL POWER capacity by 2030 (NOT 100%); 45% reduction in emission intensity of GDP by 2030 (vs 2005 baseline).

Flashcard

Q · AP APSDMA heatwave 2026 + India's heatwave framework?tap to reveal
A · EVENT: APSDMA issued SEVERE HEATWAVE WARNING for 14 MANDALS (Srikakulam + Parvathipuram Manyam districts) and HEATWAVE CONDITIONS for 28 others. KEY DATA: 207+ mandals across AP recorded >41°C; SALUR in Manyam district peaked at 45.2°C; heatwaves cost India up to 2% OF GDP ANNUALLY. DEFINITION (IMD): Plains — max temp ≥40°C AND 5-6°C/7°C+ departure from normal; Hills ≥30°C; Coastal ≥37°C. CAUSES: (1) CLIMATE CHANGE (2) ANTICYCLONIC CIRCULATION — air sinking compresses + heats lower atmosphere (3) URBAN HEAT ISLAND (UHI) — concrete-dense cities 1-3°C warmer (4) EL NIÑO MODOKI — central-Pacific warming distinct from canonical eastern-Pacific El Niño; 'Modoki' = Japanese 'similar but different' (5) absence of Western Disturbances. CHALLENGES: Public health (heatstroke), agriculture, economic productivity (~2% GDP), power grid strain, water stress. MITIGATION: (1) Early warning systems — IMD + APSDMA mandal-specific (2) HEAT ACTION PLANS (HAPs) — first AHMEDABAD 2013 post 2010 deaths; 23+ states now (3) Public health advisories (4) NIP — disaster resilience integration (5) RCBA framework. INSTITUTIONAL FRAMEWORK (DM Act 2005): NDMA = National Disaster Management Authority — apex, PM-chaired, up to 9 members, New Delhi; SDMA = State (CM-chaired) — APSDMA = AP's; DDMA = District (DM/Collector-chaired). NDMA CLASSIFIED HEATWAVE AS NATURAL HAZARD IN 2016 — enables SDRF. IMD = India Meteorological Department; established 1875; under Ministry of Earth Sciences. India NDC: net-zero 2070; 50% non-fossil power 2030; 45% emission-intensity cut by 2030 vs 2005.

Suggested Reading

  • NDMA — Heat Wave Guidelines and HAP framework
    search: ndma.gov.in heat wave guidelines national action plan
  • IMD — heatwave criteria and warnings
    search: imd.gov.in heat wave criteria definition plains hills coastal

Interlinkages

Disaster Management Act, 2005National Disaster Management Authority (NDMA)State Disaster Management Authority (SDMA) — APSDMADistrict Disaster Management Authority (DDMA)India Meteorological Department (IMD)Heat Action Plan (HAP) — Ahmedabad 2013 firstNational Infrastructure Pipeline (NIP)Resilience Cost-Benefit Analysis (RCBA)El Niño ModokiUrban Heat Island (UHI) effectIndia's NDC under Paris AgreementClimate change and IPCC frameworksState Disaster Response Fund (SDRF)
Prerequisites · concepts to brush up first
  • Indian disaster management architecture (DM Act 2005, NDMA-SDMA-DDMA)
  • Climate change and atmospheric circulation basics
  • IMD organisational role and forecasting
  • Andhra Pradesh administrative geography (mandals, districts)
Topics
environment/climate-change/heatwavedisaster/natural-hazard/heatpolity/disaster-management/ndma-sdmageography/atmospheric-circulation/anticyclone
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