On August 5, as it has done for centuries, St. Mary Major Basilica will celebrate the miraculous snowfall that occurred during the night of August 4-5, 358 on the site where the basilica was built, according to a communique from the basilica administration.
Three days of preparation, in which Cardinals Francesco Mario Pompedda,
prefect of the Apostolic Signatura, Sergio Sebastiani, prefect of the
Prefecture of Economic Affairs of the Holy See, and Virgilio Noe, archpriest
emeritus of St, Peter's Basilica will participate, will mark this annual
event. The highlight on August 5 will be a Pontifical Mass celebrated by
Cardinal Carlo Furno, archpriest of the basilica. During both Mass and
Second Vespers the most noteworthy moment of this feast day occurs when
there is a shower of flower petals from the ceiling of the basilica, to
commemorate the 358 August snowfall.
According to tradition, the Virgin Mary appeared in a dream to two
faithful Roman Christians, the patrician John and his wife as well as to Pope Liberius (352-366), asking that a church in her honor be built on the site where snow would fall the night of August 4-5. Pope Liberius traced the outlines of the church in the snow and the first basilica was built on that site. It was completed about a century later by Pope Sixtus III, following the Council of Ephesus in 431 during which Mary was declared to be the Mother of God.
The basilica is called St. Mary Major as well as St. Mary of the Snows and
the Liberian Basilica, for the Pope who ordered it built. It is famous for
housing the relic of the crib of the Baby Jesus as well as the image of “Salus Populi Romani” which is revered by Romans, and which tradition says was painted by St. Luke.
This update courtesy of Vatican Information Service.