“The India Meteorological Department (IMD) has issued yellow alert for Delhi” This statement was rolled out by the IMD authorities amidst the dropping temperatures in and around the National Capital. But what is this colour coding system..?
IMD, the top weather body in India is tasked with identifying and issuing warnings for adverse weather events, relying on a system of colour-coded weather warnings. The department has set four colour-coded warnings that it issues depending on how intense or violent a weather system- green, yellow, orange and red.
Green: This code means that “all is well” and there is no likelihood of any adverse weather-related and there are no advisories issued.
Yellow: The colour yellow signals authorities to “be aware” or on their guard with the likelihood of severely bad weather that could last several days at a stretch, while also suggesting that the weather could take a turn for the worse and upset daily activities.
Orange: Meaning “Be prepared”, the IMD issues the orange alert as a warning for extremely bad weather, electricity blackouts and the possibility of communication disruptions, including road and rail closures.
Red: The IMD issues the highest level of warning—indicating authorities should “take action”—only when it is guaranteed that bad weather is going to upend travel and power and pose a significant risk to life.
The IMD has issued yellow alert for Uttarakhand also from December 18-21. Many places in that state, like Ranichauri, Mukteshwar, Mussoorie, Pithoragarh and New Tehri have recorded sub-zero or near-freezing temperatures.