It is issued by the India Meteorological Department whose objective is to alert people ahead of severe or hazardous weather which has the potential to cause damage, widespread disruption or danger to life.
Warnings are updated daily.
The IMD uses 4 colour codes
IMD has four colour-coded warnings as per the intensity of any weather system – green, yellow, orange and red.
Green (All is well): No advisory is issued.
Yellow (Be Aware): Yellow indicates severely bad weather spanning across several days. It also suggests that the weather could change for the worse, causing disruption in day-to-day activities.
Orange/Amber (Be prepared): The orange alert is issued as a warning of extremely bad weather with the potential of disruption in commute with road and rail closures, and interruption of power supply.
Red (Take Action): When the extremely bad weather conditions are certainly going to disrupt travel and power and have significant risk to life, the red alert is issued.
INDIA METEOROLOGICAL DEPARTMENT (MINISTRY OF EARTH SCIENCES)
INDIA Meteorological Department was established in 1875.
It is the National Meteorological Service of the country and the principal government agency in all matters relating to meteorology and allied subjects.
At present IMD is under the Ministry of Earth Sciences (MoES).
The Director General of Meteorology is the Head of the India Meteorological Department, with headquarters at New Delhi.
There are 6 Regional Meteorological Centres, each under a Deputy Director General with headquarters at Mumbai, Chennai, New Delhi, Calcutta, Nagpur and Guwahati.
