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This guide covers how to shift from weather forecasts and warnings to multi-hazard impact-based forecast and warning services represents a paradigm shift in service delivery for many National Meteorological and Hydrological Service (NMHS), but one which is entirely consonant with the Implementation Plan for the WMO Strategy for Service Delivery adopted in 2013. To assist Members with this process, the Guidelines include many examples that help to illustrate the nature of the changes described and a section on a possible approach to change management of relevance in this context.

According to the publication it is strongly recommended that:

• Impact-based monitoring tools, capabilities and networks to verify impact-based forecasts and warnings be developed;
• All those involved during the event participate in evaluation of their contribution and in the feedback process with respect to achieving their mandate;
• Improvement be planned, trialled and operationalized according to evaluations and feedback by the users; 
• Success stories be used as good practice examples and proof of concept among partners, stakeholders and with the public.