The India Meteorological Department (IMD) is the national agency responsible for monitoring and forecasting weather, climate and related geophysical phenomena for the Republic of India. Operated by the Government of India, the IMD provides routine public forecasts, specialized services for aviation and shipping, and alerts for extreme events. The organisation maintains a national headquarters in New Delhi and a network of regional and local offices across the country.

Core functions and services

IMD’s primary duties include short- and medium-range weather forecasts, seasonal monsoon outlooks, and warnings for severe weather. It operates a national cyclone-warning system and is the official center for tropical cyclone tracking in the northern Indian Ocean. Other services include:

  • Daily public forecasts and severe-weather advisories.
  • Aviation meteorological services for airports and airlines.
  • Marine weather warnings and guidance for coastal communities.
  • Agrometeorological advisories for agriculture and water resources.
  • Climate monitoring and long-term data for research and planning.

Techniques, instruments and modelling

To generate forecasts and warnings, IMD uses an integrated suite of tools: weather satellites, Doppler weather radars, automatic weather stations, rain gauges and oceanographic observations. These observations feed numerical weather prediction models and ensemble forecasting systems. The department also issues tailored bulletins for emergency managers, transport operators and the media to support timely decision-making.

History and organisational context

Tracing its institutional roots to the late 19th century, the IMD has evolved into the central meteorological authority of the country. Today it functions under national science and earth-science ministries and works with state governments, research institutions and international meteorological organizations. Its regional offices are charged with localized forecasting, observations and public outreach.

Importance, impact and distinctions

IMD plays a critical role in a country where seasonal monsoon rains, cyclones and heat waves have major social and economic consequences. Timely forecasts and cyclone warnings reduce loss of life and property, and the department’s advisory products support agriculture, disaster management and transport safety. For tropical-cyclone forecasting and warnings the IMD is often compared with other national centers such as the National Hurricane Center, while collaborating internationally on satellite data and model improvements.