Published by WMO: 9 December 2021

As the economic and human impacts of extreme weather and climate change increase, forecasts not just of what the weather will BE, but of what the weather will DO are vital to save lives and livelihoods.

As a result, there is a paradigm shift towards impact-based forecasting, driven by the international meteorological and humanitarian community and facilitated by leaps in science and technology.

WMO has consequently expanded its Guidelines on Multi-hazard Impact-based Forecast and Warning Services, first produced in 2015 as a standard reference text.