The NAS (National Airspace System) Performance Review (NASPR) is an annual review of system operations during severe weather season (May through September) also known as SWAP (Severe Weather Avoidance Procedures). Held typically in the Fall, the NASPR presents operational data analysis, use case scenarios and lessons learned from the season where convective weather and increase traffic demand poses significant challenges for maintaining efficiency in the NAS. The CDM member community is welcome to attend NASPR via an invitation from the FAA’s CDM/International Office.