Severe Cyclone Murasu begins landfall on Andhra Pradesh coast near Ongole
Why this matters
Cyclone Murasu is a live case study of how a coastal hazard becomes a disaster when strong winds, heavy rain, storm surge and human exposure combine. For UPSC, it links cyclone science with early warning, evacuation, resilient infrastructure, coastal planning and disaster-risk governance.
In plain words
Cyclone Murasu is a severe cyclonic storm over the west-central Bay of Bengal that began crossing the South Andhra Pradesh coast near Ongole in the early hours of November 3, 2026. The India Meteorological Department reported that the system was expected to cross between Nellore and Narsapur, close to Ongole, with maximum sustained winds of 100–110 kmph and gusts up to 120 kmph. (mausam.imd.gov.in)
A cyclone is a rotating low-pressure system that draws energy from warm ocean water. Its danger is not limited to wind: intense rain can cause flooding, while seawater can be pushed inland as a storm surge. For Murasu, a surge of 1–1.5 metres above the normal astronomical tide was forecast, with the highest risk in low-lying parts of Bapatla, Krishna and Prakasam districts. (mausam.imd.gov.in)
Think of landfall as a moving engine leaving the sea: friction with land gradually weakens the storm, but the most dangerous winds, rain and seawater may arrive before weakening becomes significant. Therefore, disaster management must act before the centre crosses the coast. Accurate forecasts, last-mile warnings, evacuation of exposed settlements, safe shelters, protection of power and communication networks, and rapid restoration determine whether a cyclone remains a weather event or becomes a humanitarian crisis. The India Meteorological Department classifies a severe cyclonic storm by sustained winds of roughly 89–117 kmph. (mausamaudit.imd.gov.in)
Key facts
- - The India Meteorological Department forecast landfall between Nellore and Narsapur, close to Ongole, during the early hours of November 3, 2026.
- - Maximum sustained winds were expected at 100–110 kmph, gusting up to 120 kmph.
- - A storm surge of about 1–1.5 metres above the astronomical tide was forecast in low-lying areas of coastal Andhra Pradesh.
- - The event is relevant to cyclone forecasting, coastal vulnerability, early-warning systems, evacuation and disaster-resilient infrastructure.
- - Murasu is the second major cyclone to affect India's eastern coast within a week, highlighting intensifying disaster-management challenges.
How we got here
India’s cyclone-management approach evolved from a relief-centred model towards preparedness, risk reduction and resilient reconstruction. The Disaster Management Act, 2005 created the legal framework for coordinated action by national, state and district authorities, covering prevention, mitigation, preparedness, response, recovery and rehabilitation. (indiacode.nic.in)
The National Disaster Management Authority’s 2008 cyclone guidelines emphasised hazard mapping, improved forecasting, evacuation planning, cyclone shelters, stronger communication systems, resilient infrastructure and community participation. They also distinguish Indian cyclone categories according to maximum sustained wind speed. (rsmcnewdelhi.imd.gov.in)
Globally, the Sendai Framework for Disaster Risk Reduction 2015–2030 shifted attention towards understanding risk, strengthening governance, investing in resilience and improving preparedness. Murasu demonstrates why this approach matters: the hazard is atmospheric, but losses depend on settlement patterns, building quality, livelihood exposure, drainage, coastal elevation, warning access and administrative capacity. (sdgs.un.org)
The bigger picture
Science & Tech
Forecasting, landfall and warning accuracy
Cyclone forecasting combines satellite observations, ocean and atmospheric data, numerical weather models and surface measurements. Murasu’s forecast gave a landfall window, likely corridor, wind range and surge estimate rather than a single perfectly certain point. This distinction matters because a small shift in track can alter which districts face the strongest winds and surge. The India Meteorological Department’s warning system converts complex forecasts into actionable messages for ports, administrations, fishermen and residents. The remaining challenge is last-mile delivery: a technically accurate warning is ineffective if it is not understood, trusted or received in time.
Forecast value is measured not only by track accuracy but by whether warnings produce timely protective action.
Environmental
Storm surge and coastal vulnerability
Storm surge is the temporary rise of sea level caused mainly by cyclone winds and low atmospheric pressure. It becomes especially dangerous when it coincides with a high astronomical tide, shallow coastal waters, low elevation and blocked drainage. The India Meteorological Department forecast a peak surge of 1–1.5 metres above astronomical tide, with greatest concern for Bapatla, Krishna and Prakasam districts. Wetlands, mangroves, sand dunes and estuaries can reduce wave energy, while their degradation increases exposure. Coastal regulation must therefore combine engineered protection with ecosystem-based protection.
The same cyclone produces unequal damage because coastal elevation, ecosystems, drainage and settlement patterns differ.
Social
Evacuation, inequality and last-mile resilience
Cyclones disproportionately affect people living in kutcha houses, fishing settlements, informal coastal colonies and flood-prone lowlands. Evacuation is not merely moving people; it requires accessible shelters, transport, drinking water, sanitation, medicines, livestock arrangements and protection for women, children, older persons and persons with disabilities. Fisherfolk may face livelihood losses even when lives are saved. Local volunteers, self-help groups, schools, panchayats and trusted communication channels are crucial because official alerts may not reach every household or may be misunderstood.
A people-centred warning system must protect livelihoods and dignity along with physical safety.
Economic
Resilient infrastructure and cascading losses
Cyclone damage spreads through interconnected systems: wind can damage power lines, outages can disrupt water supply and telecommunications, flooding can close roads, and port or crop losses can affect prices and employment. Repeated reconstruction diverts public money from development and can trap vulnerable households in debt. Critical infrastructure should therefore be designed for wind, flooding and salt-water exposure together, not as separate risks. Power networks, hospitals, schools, roads, telecommunications and storage facilities need redundancy, raised equipment, maintenance protocols and rapid restoration plans.
The economic cost of a cyclone is determined by infrastructure interdependence, not only by the storm’s headline wind speed.
The big debate
Should coastal administrations prioritise mandatory evacuation and strict coastal construction controls even when they impose short-term livelihood and economic costs?
For
- Compulsory evacuation can prevent avoidable deaths when forecasts indicate dangerous winds, flooding and storm surge.
- Strict zoning reduces repeated public expenditure on rebuilding homes and infrastructure in known high-risk locations.
- Precaution is justified because forecast uncertainty can shift the most dangerous conditions towards densely settled areas.
Against
- Evacuation disrupts fishing, agriculture, markets and daily wages, imposing heavy costs on households already vulnerable.
- Poorly managed relocation can create distrust, overcrowded shelters, livelihood insecurity and resistance to future warnings.
- Blanket construction restrictions may ignore local adaptation, traditional settlements and the economic importance of coastal activity.
On balance. Mandatory evacuation is justified for clearly mapped high-risk zones when warnings indicate imminent life-threatening conditions, but it must be risk-based rather than arbitrary. Compensation, transport, accessible shelters, livelihood continuity and transparent coastal zoning are essential; otherwise enforcement may reduce trust and weaken future compliance.
For or against?
“Strict zoning reduces repeated public expenditure on rebuilding homes and infrastructure in known high-risk locations.”
For or against?
“Blanket construction restrictions may ignore local adaptation, traditional settlements and the economic importance of coastal activity.”
Answer it in Mains
GS3
Discuss the role of early-warning systems in reducing cyclone-related mortality in India. What limits their effectiveness?
Approach. Begin with Murasu’s forecast and landfall window; explain forecasting, warning dissemination, evacuation and shelters; assess last-mile, trust, disability and livelihood barriers; conclude with impact-based warnings and community preparedness.
Worth quoting. Quote the India Meteorological Department’s Cyclone Warning in India: Standard Operating Procedure and the Sendai Framework 2015–2030, Priority 4. (mausamaudit.imd.gov.in)
GS1
Coastal disasters are as much a consequence of vulnerability as of natural hazards. Examine in the context of cyclones affecting Andhra Pradesh.
Approach. Define hazard, exposure and vulnerability; analyse low-lying settlements, housing, livelihoods, surge, drainage and ecosystem loss; add differentiated impacts on fisherfolk and vulnerable groups; conclude with risk-sensitive coastal planning.
Worth quoting. Use the 1–1.5 metre surge forecast for Bapatla, Krishna and Prakasam and the National Disaster Management Authority’s cyclone guidelines, 2008. (mausam.imd.gov.in)
GS3
India has moved from disaster relief to disaster-risk reduction. Discuss the institutional and policy changes required for resilient coastal infrastructure.
Approach. Trace the shift from post-disaster relief to prevention and resilience; discuss the Disaster Management Act, risk mapping, resilient lifelines, ecosystem buffers and finance; conclude with build-back-better and accountable local governance.
Worth quoting. Cite the Disaster Management Act, 2005 and Sendai Framework Priorities 2–4 on governance, resilience investment and preparedness. (indiacode.nic.in)
Prelims quick-fire
- Data. Murasu began landfall near Ongole early on November 3, 2026, according to the India Meteorological Department bulletin. Landfall process began; do not automatically interpret the bulletin as complete landfall.
- Term. Murasu was classified as a severe cyclonic storm with sustained winds of 100–110 kmph and gusts up to 120 kmph. Indian classification uses maximum sustained wind, not the temporary gust, for category.
- Data. A storm surge of 1–1.5 metres above astronomical tide was forecast for low-lying South Andhra Pradesh. Storm surge is additional water-level rise; it is not the same as ordinary tidal height.
- Geography. The highest forecast peak surge was expected over Bapatla, Krishna and Prakasam districts, IMD bulletin, November 3, 2026. The predicted surge zone is not identical to the exact landfall point.
- Body/Institution. India’s severe cyclonic storm category corresponds approximately to 89–117 kmph sustained winds, IMD cyclone procedure. Do not confuse India’s categories with the Atlantic hurricane scale.
- Constitution. The Disaster Management Act, 2005 provides India’s statutory framework for coordinated disaster management. It is an Act of Parliament, not a constitutional amendment.
- International. The Sendai Framework, adopted in 2015, identifies four priorities including risk understanding and investment in resilience. Sendai is an international framework, not a treaty creating a national authority.
- Report/Index. The National Disaster Management Authority issued cyclone-management guidelines in 2008 covering preparedness and mitigation. Guidelines are policy guidance; implementation also depends on state and local institutions.
What should happen
- Develop impact-based, location-specific warnings that combine forecast intensity with expected flooding, surge, road blockage and service disruption. People act more effectively when warnings explain what will happen in their locality, by when, and what action is required. Sendai Framework for Disaster Risk Reduction 2015–2030, Priority 1 and Priority 4. (mandates.un.org)
- Complete multi-hazard coastal risk maps and regularly update evacuation routes, shelters and vulnerable-household databases. Risk changes with new construction, erosion, drainage failure, population movement and infrastructure expansion. National Disaster Management Authority, National Disaster Management Guidelines: Management of Cyclones, 2008. (rsmcnewdelhi.imd.gov.in)
- Enforce risk-sensitive coastal planning and cyclone-resilient building standards, including raised electrical equipment and protected lifeline infrastructure. Reducing exposure and structural vulnerability is cheaper and safer than repeatedly rebuilding after disasters. Disaster Management Act, 2005; Sendai Framework’s Priority 3 on investing in disaster-risk reduction. (indiacode.nic.in)
- Strengthen community-led preparedness through drills, local volunteers, multilingual communication and inclusive shelter management. Local institutions provide the trust, speed and social knowledge needed to convert warnings into evacuation and protective action. National Disaster Management Authority, National Disaster Management Guidelines: Management of Cyclones, 2008. (rsmcnewdelhi.imd.gov.in)
Jargon, demystified
- Landfall
- The stage when a cyclone’s centre crosses from the sea onto land; damaging winds, rain and surge often peak around this stage. Landfall is not simply the first rain; it refers to the storm centre crossing the coast.
- Severe cyclonic storm
- An Indian cyclone category with maximum sustained winds of roughly 89–117 kmph over the North Indian Ocean. Category is based on sustained wind, not the highest short-lived gust.
- Storm surge
- An abnormal rise of seawater pushed towards land by cyclone winds and low air pressure, often worsening coastal flooding. Its impact depends on tide, coastal shape, elevation and drainage.
- Astronomical tide
- The predictable rise and fall of sea level caused mainly by the gravitational pull of the Moon and Sun. Storm surge is measured above this normal tidal level.
- Wall cloud
- A dense ring of convective clouds surrounding the central core of a tropical cyclone, containing its strongest winds and rain. The forward wall-cloud region approaching the coast signals imminent severe conditions.
- Early-warning system
- An arrangement that detects hazards, forecasts impacts, communicates alerts and enables people to take protective action. A warning fails if communication does not lead to timely action.
- Vulnerability
- The physical, social, economic or environmental conditions that make people or assets more likely to suffer harm. Weak housing and poverty can increase vulnerability even when hazard intensity is unchanged.
Check the term
What does "Severe cyclonic storm" mean?
Check the term
What does "Wall cloud" mean?