This measure, which represents a higher level than the pre-alert established since April 27, is implemented due to the magnitude of the event, the high expected concentration of people, and potential impacts on mobility and essential services. The aim is to enhance operational coordination among all participating security, emergency, and Civil Protection bodies.

The alert activation allows for continuous monitoring of the event by emergency coordination bodies, ensures the immediate availability of necessary resources, and facilitates the adoption of rapid and coordinated response measures for any incident. Additionally, self-protection recommendations will be disseminated to the public, such as planning travel, using public transport, and following instructions from security services.

The prior pre-alert, activated in April, already aimed to anticipate resource organization and monitor events with potential risks. Pope Leo XIV's visit has led the Directorate General of Emergencies and CECOES 1-1-2 to design a specific operation involving 43 professionals and an advanced communication network to oversee the nine self-protection plans developed for the various scenarios.