Decoding the IMD's Colour System
During monsoon, the IMD uses a four-colour system—Green, Yellow, Orange, and Red—to warn citizens about impending weather conditions. This system is designed to break down complex forecasts into simple, actionable advice. Its primary goal is to help you
understand the potential severity and impact of rainfall on your daily life, especially your commute, allowing residents and disaster management authorities to prepare for everything from minor delays to significant disruptions.
Green Alert: All Is Well
A Green alert means 'No Advisory' is needed. This indicates that weather conditions are normal and no significant rainfall is expected that would disrupt daily activities. For commuters, a green alert signals that your journey should be largely unaffected by the weather. However, given the unpredictable nature of monsoons, it's always wise to have a raincoat or umbrella handy, but you can generally proceed with your travel plans as usual without expecting major weather-related delays.
Yellow Alert: Be Aware
The Yellow alert is a 'Watch' signal. It indicates the possibility of bad weather over the next few days that could cause disruptions. For rainfall, this often means a forecast of heavy showers (between 64.5 mm and 115.5 mm) that could interfere with daily routines. Commuters should 'Be Aware' and stay updated. This is the time to check traffic advisories and expect minor to moderate delays due to potential waterlogging in some areas. While widespread chaos is unlikely, allowing extra travel time is a smart move.
Orange Alert: Be Prepared
An Orange alert means you need to 'Be Prepared'. This warning is issued when extremely bad weather is expected, with a high likelihood of disruption to commutes. This could include heavy to very heavy rainfall (between 115.6 mm and 204.4 mm). For commuters, this is a serious warning. Expect significant traffic congestion, the closure of underpasses, and potential delays or cancellations of rail and bus services. Authorities may advise against non-essential travel, and it might be a good day to consider working from home if possible.
Red Alert: Take Action
A Red alert is the highest level of warning and means it's time to 'Take Action'. It is issued when weather conditions are set to become so severe that they pose a significant risk to life and property, often with rainfall exceeding 204.5 mm in 24 hours. For commuters, a Red alert is a clear signal to avoid travel unless absolutely essential. Widespread flooding, major traffic gridlock, and severe disruptions to all modes of transport and power supply are highly likely. During a Red alert, always follow the instructions issued by local authorities, which may include closing schools and offices.
Your Monsoon Commuting Toolkit
Regardless of the alert colour, smart preparation can make any monsoon journey smoother. Before leaving, always check the latest weather forecasts and live traffic updates on apps. Keep a 'monsoon kit' in your bag: a sturdy umbrella or raincoat, waterproof protection for your phone and laptop, a power bank, and a change of footwear. Knowing alternate routes is crucial, as waterlogging can shut down your usual path without warning. In cities like Mumbai, Delhi, and Bengaluru, where heavy rain can cripple traffic, leaving earlier or having a work-from-home option ready can save you from hours of frustration.
