The IMD's Colour Code System
The India Meteorological Department (IMD) is the official agency responsible for monitoring and forecasting weather across the country. To make its warnings easy to understand, the IMD uses a colour-coded system for various weather events, including the heavy
rainfall that defines the monsoon. The four colours—Green, Yellow, Orange, and Red—are designed to help citizens and authorities gauge the severity of the situation and know what action to take. These alerts are based on the probability of a weather event and its potential impact. Understanding this system is the first step to making smart decisions for your holiday.
Green Alert: All Is Well
A Green alert means exactly what it sounds like: all is well. Weather conditions are normal, with no significant rainfall or hazardous weather expected that would require an advisory. For a tourist, a Green alert means you can proceed with your travel and sightseeing plans without any weather-related worries. It signals clear skies or, at most, light, sporadic showers that are unlikely to disrupt your day.
Yellow Alert: Be Aware
This is a common alert during the monsoon and acts as a heads-up. A Yellow alert means bad weather is possible and you should 'be aware' or 'watch'. It typically indicates the chance of moderate to heavy rainfall (around 64.5 mm to 115.5 mm in 24 hours). While widespread disruption isn't expected, it can affect daily activities. For travellers, this means you should stay updated on the forecast. Your trip to the beach might be interrupted by a downpour, or a drive through low-lying areas could involve minor waterlogging. It's a signal to proceed with caution, pack a raincoat, and maybe have a plan for indoor activities.
Orange Alert: Be Prepared
An Orange alert is a serious warning that means you must 'be prepared'. It is issued when heavy to very heavy rainfall is expected (between 115.6 mm and 204.4 mm), which has the potential to cause significant disruption. At this stage, there is a heightened risk of waterlogging on streets, travel delays for road, rail, and air transport, and even power cuts. For holidaymakers, especially those in hilly or remote areas, an Orange alert is a sign to seriously reconsider your plans. The risk of landslides increases, and non-essential travel is often discouraged. It's time to stock up on essentials and prioritise safety over sightseeing.
Red Alert: Take Action
A Red alert is the highest level of warning and means 'take action'. It is issued when extremely severe weather is forecast, such as rainfall exceeding 204.5 mm in 24 hours. This kind of weather poses a significant threat to life and property, with a high likelihood of widespread flooding, major disruptions to transport and power, and damage to infrastructure. If a Red alert is issued for your destination, travel should be avoided. Authorities may issue evacuation orders for vulnerable areas. Your only priority should be safety; follow the instructions of local disaster management bodies and stay indoors in a secure location.
Planning Your Monsoon Holiday Smartly
Weather alerts are guides, not guarantees. Before and during your trip, always check the latest IMD forecasts and local advisories. Build flexibility into your itinerary; monsoon travel rewards those who can adapt. Choose your destination wisely, as some regions are more prone to flooding and landslides. Always pack appropriately with waterproof bags for electronics, quick-drying clothes, and sturdy, non-slip footwear. Keep emergency numbers handy, ensure your phone and a power bank are fully charged, and inform someone of your travel plans. If driving, check road conditions, avoid waterlogged streets, and never attempt to cross flooded causeways.
