“Heavenly sign”? Incident at the Pope's mass causes a stir in Italy. Lightning strike in 2013 is famous.
It hit a large iron cross at the top of St. Peter's Basilica, exactly on the day on which the then Pope Benedict XVI. resigned his office. A peace dove released during the Angelus prayer was attacked and fatally injured by other birds. When a Curia cardinal fell from his chair, it was later interpreted as a sign of the upheaval that Pope Francis would bring.