IMD’s colour-coded weather alerts: A quick guide

The Indian Meteorological Department (IMD) uses a colour-coded weather alert system to help the public and authorities understand the severity of upcoming weather events. This system simplifies complex meteorological information into easily understandable alerts and is commonly used for warnings and related to rainfall, thunderstorms, heatwaves, cyclones and other extreme weather conditions.

Here’s what each other colour means:

• Green Alert- No Warning 

               What it means: Weather is expected to be normal

               Purpose: No caution or action is needed 

            Public Advice: Go about your day as usual; no threat is expected 

• Yellow Alert- Be Aware

What it means: Weather conditions may turn tough

Purpose: To keep people informed and cautious about changing conditions

Common triggers: Isolated heavy rainfall, thunderstorms, lightning, mild heat waves

Public advice: Stay updates through official weather reports and be alert 

• Orange Alert- Be Prepared 

What it means: Severe weather is likely in some areas

Also Read: Karnataka to witness rainy start to the week; IMD issues Yellow Alert

Purpose: To prompt authorities and the public to get ready for action 

Common triggers: Very heavy rain, strong storms, significant heatwave or cold wave 

Public advice: Prepare for possible disruption. Authorities may start emergency protocols 

• Red Alert: Take Action 

What it means: Extreme weather is expected; immediate action is necessary 

Purpose: To warn of dangerous conditions that could lead to disasters

Common triggers: Extremely heavy rainfall, intense cyclones, severe heat or cold waves 

Public advice: Follow emergency instructions. Take all necessary precautions to protect life and property

IMD uses a 4-colour alert system (Green, Yellow, Orange, Red) to indicate weather severity

Green- normal, Yellow-be aware, Orange-be prepared, Red-take action

Alerts help the public and authorities respond to extreme weather events effectively