Discuss the meaning of colour-coded weather warnings for cyclone prone areas given by India Meteorological Department.
Approach · directive: “discuss”
What it asks · Explain what each colour in IMD's warning system signals, the stage of the cyclone it relates to, and the action expected of officials and citizens.
Open with · IMD issues cyclone warnings in four stages and colour-codes its bulletins and maps so that officials and the public can grasp the risk at a glance.
Cover
- Four stages: pre-cyclone watch (about 72 hours ahead), cyclone alert (48 hours), cyclone warning (24 hours) and post-landfall outlook (12 hours).
- Bulletin colours: cyclone alert is yellow, cyclone warning orange and post-landfall outlook red, a scheme followed since 2006.
- Weather-map colours: green means no warning and no action; yellow means watch, stay updated; orange means alert, be prepared; red means warning, take action.
- Severity: colours signal expected impact, so red points to extreme rain, gale winds and storm surge likely to threaten life and property.
- Use: state governments, disaster management authorities, ports and fisheries departments escalate evacuation, port signals and fishermen's advisories as the colour rises.
- Limit: colours work only with last-mile communication in local languages and evacuation systems, as Odisha's preparedness since the 1999 super cyclone shows.
Close with · Colours turn forecast science into a graded call to action; their worth is proved only when the last household acts on them.
Add value (verified)
- IMD's cyclone bulletins have used stage-wise colour codes since the post-monsoon season of 2006: yellow for cyclone alert, orange for cyclone warning and red for post-landfall outlook. Four Stage Warning — RSMC New Delhi, India Meteorological Department ↗“Cyclone Alert Yellow. Cyclone Warning Orange. Post landfall out look Red.”
Question: UPSC's CS (Main) 2022, GS Paper I — paper ↗. Approach: Minimalist IAS, checked 30 Sept 2026 (how we verify) — UPSC publishes no model answers. ·
Model answer · 222 words (UPSC limit 150) · Minimalist IAS
The India Meteorological Department (IMD) issues cyclone warnings in stages and colour-codes its bulletins and impact maps so that officials and the public can read the risk at a glance.
The four-stage warning
- Pre-cyclone watch (about 72 hours ahead), cyclone alert (48 hours), cyclone warning (24 hours) and post-landfall outlook (12 hours); since 2006 the alert bulletin is yellow, the warning orange and the post-landfall outlook red.
What the colours mean
- Green: no warning; conditions normal; no action needed.
- Yellow: be aware; a watch, since severe weather is possible in the coming days; follow forecasts and prepare.
- Orange: be prepared; an alert, since severe weather with disruption is expected; response plans activate, fishermen stay ashore, port signals go up.
- Red: take action; a warning of extremely severe weather, with gale winds, heavy rain and storm surge threatening life and property; coasts are evacuated and fishing, shipping and transport suspended.
Why the colours matter
- They turn technical forecasts into a graded call to action for state governments, disaster management authorities, ports, fisheries departments and the media.
- They work only with last-mile reach: local-language alerts, sirens, cyclone shelters and drilled evacuation, as Odisha's record since the 1999 super cyclone shows.
Colour codes turn forecast science into simple, escalating instructions; their value lies in how quickly the last household on the coast acts on them.
Written by Minimalist IAS from facts checked at source (how we verify) — a little fuller than exam length, so every part of the question is covered; in the hall, keep the structure and trim the detail. UPSC publishes no model answers: compare your structure and coverage with this, then write your own.