Revision summary
IMD cyclone colours are Green, Yellow, Orange, and Red. Green means no special action; Yellow means watch and stay updated. Orange means prepare for flood, wind, and failed services. Red means take action, including evacuation of the vulnerable. The colours sit on a timed watch–alert–warning–outlook sequence for named coasts.
Model answer
Introduction
The India Meteorological Department uses colour-coded warnings so coastal states can read cyclone risk at a glance. Green, Yellow, Orange, and Red are not decorations; they are graded orders to watch, prepare, or move.
Body
What the four colours mean
- Green means no cyclonic warning: the sea and coast are in a normal watch, and no special public action is required.
- Yellow means be updated: a watch is on, heavy rain or wind may hurt kutcha houses and low fields, and people should follow the next bulletins.
- Orange means be prepared: an alert that power, roads, and communications may fail, flooding is likely, and disaster units should stand ready.
- Red means take action: a warning of extreme rain and wind, likely extensive damage, and the need to evacuate vulnerable people from the surge line.
How IMD times the cyclone message
- A pre-cyclone watch is typically issued about seventy-two hours ahead, then a cyclone alert, a cyclone warning, and a post-landfall outlook as the storm nears and crosses.
- Colour on the map is tied to expected wind, rain, and storm surge for named coastal districts, not to a single national mood.
- Ports, fisheries, and railways use the same ladder so boats return, trains slow, and salt workers leave exposed bunds.
Why colour codes matter in cyclone belts
- Odisha, Andhra Pradesh, Tamil Nadu, West Bengal, Gujarat, and the island territories need a shared language that works on radio and phone when literacy and time are short.
- After the Super Cyclone of 1999, Odisha’s later success in storms such as Phailin (2013) showed that early colour-coded warning plus evacuation saves lives even when crops and huts still fall.
- The code is a public-safety tool; it does not itself stop the cyclone.
Flow diagram
flowchart TD G[Green no action] --> Y[Yellow be updated] Y --> O[Orange be prepared] O --> R[Red take action] R --> E[Evacuate surge line] Y --> F[Follow next bulletin]
Conclusion
IMD’s Green–Yellow–Orange–Red ladder tells cyclone coasts when to ignore, watch, prepare, or evacuate. The meaning is action, timed to the storm’s approach, not a forecast of zero damage once Red is hoisted.
Quick related
Students also ask
-
How is the growth of Tier 2 cities related to the rise of a new middle class with an emphasis on the culture of consumption?
Next question on this syllabus topic (2022 · Q9). View answer →
-
Does Red mean the cyclone will certainly destroy the city?
It means extreme risk and the duty to act. Damage still depends on surge, tide, and whether people leave the line.
-
Is this the same as a heatwave colour code?
The four colours are a shared IMD language. Thresholds differ for cyclone, rain, and heat; read the cyclone product for coasts.
PYQ trend
When UPSC asked this
Related PYQs from other years, newest first. Open a question to read it.
-
2023 · Q11 · GS I · 15 marks
What are the main features of Vedic society and religion? Do you think some of the features are still prevailing in Indian society? -
2022 · Q1 · GS I · 10 marks
How will you explain the medieval Indian temple sculptures represent the social life of those days? -
2022 · Q9 · GS I · 10 marks
How is the growth of Tier 2 cities related to the rise of a new middle class with an emphasis on the culture of consumption? -
2022 · Q12 · GS I · 15 marks
Discuss the main contributions of Gupta period and Chola period to Indian heritage and culture. -
2022 · Q13 · GS I · 15 marks
Discuss the significance of the lion and bull figures in Indian mythology, art and architecture. -
2021 · Q1 · GS I · 10 marks
Evaluate the nature of the Bhakti Literature and its contribution to Indian culture. -
2021 · Q15 · GS I · 15 marks
How do the melting of the Arctic ice and glaciers of the Antarctic differently affect the weather patterns and human activities on the Earth? Explain. -
2020 · Q1 · GS I · 10 marks
The rock-cut architecture represents one of the most important sources of our knowledge of early Indian art and history. Discuss.
More from this topic
Q15 · UPSC Mains 2025 · GS I · 15 marks
How can Artificial Intelligence (AI) and drones be effectively used along with GIS and RS techniques in locational and areal planning?
Indian Heritage and Culture
Remote sensing supplies pictures of land and water; GIS stores them with administrative boundaries. Drones add cheap, repeatable local maps for disasters, utilities and village layouts. Artificial intelligence classifies pixels and can forecast flood, heat or sprawl on that GIS base. Indian platforms such as Bhuvan and Gati Shakti already try to combine these tools. Planning still needs ground checks and a public purpose, or the map only watches the poor.
Q11 · UPSC Mains 2025 · GS I · 15 marks
Mahatma Jotirao Phule's writings and efforts of social reforms touched issues of almost all subaltern classes. Discuss.
Indian Heritage and Culture
Phule wrote Gulamgiri and Shetkaryacha Asud to name caste as slavery and to defend the peasant. With Savitribai he opened schools for girls and for Mahar and Mang children in Pune. The Satyashodhak Samaj (1873) sought ritual and marriage without priestly monopoly. Women, Dalits and cultivators were treated as one excluded order, which is why “almost all subaltern classes” is a fair phrase. His world was Deccan and agrarian; mill labour would be a later chapter.
Q10 · UPSC Mains 2025 · GS I · 10 marks
Do you think that globalization results in only an aggressive consumer culture? Justify your answer.
Indian Heritage and Culture
Global media and retail have spread a loud culture of brands, malls and credit. That culture can be aggressive in targeting desire and crowding out other measures of a good life. The same global pipes carry Indian production, hybrid customs, rights talk and political backlash. The poor often meet globalisation as cheap goods and weak jobs, not as lifestyle consumption. So consumer culture is a major result, not the only result.
Toppers' copies
Toppers' copies for this question will be uploaded soon.