Today the Dioceses in Louisiana celebrate the Solemnity of Our Lady of Prompt Succor. She intercedes for us and she has a deep significance to New Orleans. You can find this bellow:
The first has to do with one of the great fires which periodically threatened the city, the Ursuline Convent included. Frightened residents joined the sisters in the convent chapel, begging Our Lady to save them and their homes from the raging wind and flames. Finally, as the blaze drew too near, the Superior ordered all to evacuate the building. Before leaving, one of the sisters put a small statue of Mary with her Son into a window facing the approaching fire, with the prayer “Our Lady, unless you hasten to save us we are lost!” Then she followed the others to safety. Within minutes, the wind turned back on itself, and in a short time, the fire had lost its momentum and burned out, leaving the remainder of the city unharmed.
https://www.shrineofourladyofpromptsuccor.com/history-of-devotion-2
The second well-known intervention of Our Lady of Prompt Succor concerns the Battle of New Orleans, January 8, 1815. During the night of January 7, Andrew Jackson and his relatively small, little-prepared and ill-equipped band of soldiers organized their defenses against the large, very well equipped British army which would attack the city before dawn. At the same time, many citizens not directly involved in the army joined the Ursuline Sisters in an all-night vigil in their chapel on Chartres Street, imploring Our Lady of Prompt Succor to give the victory to Jackson for the United States, saving the city of New Orleans from British control. During the night, the Superior, Mother Ste. Marie Olivier de Vezin, promised Our Lady that if Jackson and his men won, a Mass of thanksgiving would be sung every year in memory of her saving help to the city on that day. As dawn was breaking, Fr. DuBourg began a Mass for the same intention. At the very moment of Communion a courier rushed into the chapel announcing that Andrew Jackson and his men had won the victory, and the Mass ended with the joyous singing of the Te Deum.
Secondly in 1932 Archbishop Rummel of New Orleans gave us this litany to pray to our Lady of Prompt Succor
http://www.catholictradition.org/Mary/prompt-succor.htm
Litany of Our Lady of Prompt Succor
Lord, have mercy on us.
Christ, have mercy on us.
Lord, have mercy on us.
Christ, hear us.
Christ, graciously hear us.
God the Father of Heaven, have mercy on us.
God the Son, Redeemer of the world, have mercy on us.
Holy Trinity, one God, have mercy on us.Holy Mary, pray for us.
Mother of the Infant Jesus, pray for us.
Our Lady of Prompt Succor, pray for us.
Our Lady of Prompt Succor of all who invoke you with confidence, pray for us.
Our Lady of Prompt Succor of all who are devout toward the Infant Jesus, pray for us.
Our Lady of Prompt Succor for obtaining a lively faith, pray for us.
Our Lady of Prompt Succor for sustaining the hope of Christians, pray for us.
Our Lady of Prompt Succor for obtaining and persevering in charity, pray for us.
Our Lady of Prompt Succor for observing the law of God, pray for us.
Our Lady of Prompt Succor for observing perseverance in virtue and good works, pray for us.
Our Lady of Prompt Succor in every spiritual necessity, pray for us.
Our Lady of Prompt Succor against the revolt of self-will, pray for us.
Our Lady of Prompt Succor in the occasion of sin, pray for us.
Our Lady of Prompt Succor in every temptation, pray for us.
Our Lady of Prompt Succor against the evil spirit, pray for us.
Our Lady of Prompt Succor for obtaining contrition, pray for us.
Our Lady of Prompt Succor of those wishing to re-enter the path of salvation, pray for us.
Our Lady of Prompt Succor for the conversion of sinners, pray for us.
Our Lady of Prompt Succor in every temporal necessity, pray for us.
Our Lady of Prompt Succor in every affliction, pray for us.
Our Lady of Prompt Succor of afflicted families, pray for us.
Our Lady of Prompt Succor of the sick and the poor, pray for us.
Our Lady of Prompt Succor against contagious diseases and epidemics, pray for us.
Our Lady of Prompt Succor in every accident, pray for us.
Our Lady of Prompt Succor against destruction by fire, pray for us.
Our Lady of Prompt Succor against lightning and tempest, pray for us.
Our Lady of Prompt Succor against destruction by flood, pray for us.
Our Lady of Prompt Succor of travelers, pray for us.
Our Lady of Prompt Succor of navigators, pray for us.
Our Lady of Prompt Succor of the shipwrecked, pray for us.
Our Lady of Prompt Succor against the enemies of our country, pray for us.
Our Lady of Prompt Succor in time of war, pray for us.
Our Lady of Prompt Succor of those aspiring to the holy priesthood and the religious life, pray for us.
Our Lady of Prompt Succor of laborers in the Lord’s vineyard, pray for us.
Our Lady of Prompt Succor of missionaries who spread the faith, pray for us.
Our Lady of Prompt Succor of our Holy Father the Pope, pray for us.
Our Lady of Prompt Succor for those searching for the faith, pray for us.
Our Lady of Prompt Succor against the enemies of the Church, pray for us.
Our Lady of Prompt Succor at the hour of death, pray for us.
Our Lady of Prompt Succor for the deliverance of the Souls in Purgatory, pray for us.
Lamb of God, Who takes away the sins of the world, spare us, O Lord.
Lamb of God, Who takes away the sins of the world, graciously hear us, O Lord.
Lamb of God, Who takes away the sins of the world, have mercy on us.
V: Our Lady of Prompt Succor, pray for us.
R: That we may be made worthy of the promises of Christ.O Almighty and Eternal God, Who sees us surrounded by so many dangers and miseries, grant in Thine infinite goodness that the Blessed Virgin Mary, Mother of Thy Divine Son, may defend us from the evil spirit and protect us against all adversities, that always and with prompt succor she may deliver us from every evil of soul and body, and safely guide us to the kingdom of Heaven, through the merits of Our Lord Jesus Christ, Thy Son, Who lives and reigns with Thee in the unity of the Holy Spirit, one God, world without end. Amen.
Contemplation:
If our eyes are always on Heaven and God, at the end of life we will find ourselves in His Presence.
[Recitation of the Rosary]
Imprimatur:
Joseph F. Rummel
Archbishop of New Orleans
February 11, 1936
Our Lady of Prompt Succor, Pray for us and be a prompt succor in our time of danger and need.