1. Review of the WMO Guide to Public Weather Services Practices

2. WMO Guide to PWS Practices
Published in 1999
Basic principles still valid
Many developments since then NMHS operation and technology
Needs a complete revision

3. Twenty-Seven PWS Guidelines Published

4. Cg-XV (2007) Definitions of PWS
Provide basic observations and forecasts in the areas of weather, climate and water to aid citizens in their day-to-day activities; warnings of high impact weather and extremes of climate, and information to other government authorities as appropriate in pursuance of their mission to protect the lives, livelihoods and property of their citizens;
Engage in education, awareness and preparedness activities aimed at helping citizens to make the best use of forecasts and warnings information, understand the potential threats of high impact weather and extremes of climate, and be aware of the appropriate mitigating actions.

5. Developments in PWS provision
Rapid developments in technology
We live in an online world
Huge computing power in smartphones
One-to-One communication possible
Graphics and Imagery now critical
Big Data – both meteorological and otherwise
Common Alerting Protocol
GIS technologies

6. Developments in PWS provision
Importance of excellence in Service Delivery
Impact-Based Forecast and Warnings Services
Social and Economic Benefits of Meteorological and Hydrological Services, and their assessment
Competency Frameworks – defining the necessary skill-sets for PWS Forecasters and Advisors

7. Decisions requested of CBS
Agrees the urgent need for an in-depth review of the Guide to PWS Practices
Decides that the Guide to PWS Practices be completely revised and updated, and following approval to be published prior to the next Session of CBS
Requests the SG to facilitate this revision

8. Thank you 谢谢