ATM needs to know about the occurrence or expected occurrence of specified en-route and approach weather phenomena that may affect the safety of aircraft operations, and of the development of those phenomena in time and space. A list of operational needs that this service contributes to satisfying is available in Appendix B. This service satisfies these by offering meteorological information as regulated by Commission Implementing Regulation (EU) 2017/373 of 1 March 2017 and ICAO Annex 3.The scope of the meteorological information satisfies the EU Implementing Regulation 2021/116 - Common Project One.