The Agency Behind the Alerts
The India Meteorological Department (IMD) is the government agency responsible for monitoring weather patterns, forecasting events, and issuing warnings for public safety. Its goal is to provide timely information to help citizens and disaster management
authorities prepare for everything from heavy rain and cyclones to heatwaves. The colour-coded system is its primary tool for communicating the severity of expected weather and the level of preparedness required.
Green Alert: All Is Well
A Green alert is the most welcome of all. It means 'No Warning'. Weather conditions are expected to be normal, and no significant disruptions are anticipated. For commuters, a Green alert means you can proceed with your daily plans without any weather-related worries. It signifies that no adverse weather is on the immediate horizon, so no specific action is required.
Yellow Alert: Be Aware
When the IMD issues a Yellow alert, it’s a call to 'Be Aware'. This indicates that weather conditions could potentially worsen over the next few days and might cause some disruption to daily activities. For rainfall, a yellow alert is typically issued when precipitation between 64.5 mm and 115.5 mm is expected. While widespread chaos isn't likely, commuters should remain vigilant. This might mean facing minor traffic delays or waterlogging in some low-lying areas. It’s wise to allow for extra travel time and keep an eye on weather updates before you head out.
Orange Alert: Be Prepared
An Orange alert signals a need to 'Be Prepared'. This is a serious warning indicating that extremely bad weather is likely, with the potential for significant disruption. This could include interruptions to transport services—road, rail, and air—as well as possible power outages. For rain, an Orange alert is declared when rainfall between 115.6 mm and 204.4 mm is forecast. For commuters, this is a sign to seriously reconsider travel plans. Expect major traffic congestion, flooded streets, and significant delays. If possible, it's best to avoid non-essential travel and take precautions, like securing your home and having an emergency kit ready.
Red Alert: Take Action
A Red alert is the highest level of warning and means 'Take Action'. It is issued when extremely severe weather conditions are expected, posing a significant threat to life and property. For rainfall, a red alert is sounded when the forecast predicts accumulations of over 204.5 mm within a 24-hour period. Under a Red alert, authorities expect widespread damage, major flooding, and severe disruptions to transport and power. The advice for citizens is clear: avoid all non-essential travel and follow the instructions of local authorities, which may include evacuation from vulnerable areas. Personal safety is the top priority during a red alert.
Why These Alerts Matter
This impact-based forecasting system isn't just about how much rain will fall; it's about the potential damage and disruption it can cause. By translating complex meteorological data into a simple colour-coded format, the IMD provides a clear, actionable guide for everyone. These alerts are not just for rain but are also used for other hazardous conditions like cyclones, heatwaves, and cold waves. Paying attention to these warnings allows you to make informed decisions, whether it’s leaving for work an hour earlier, taking a different route, or staying home altogether. It empowers you to plan ahead and stay safe.
