Not dogma, but something for your consideration.

Revelations by Xavier Ayral

Interview with Xavier Ayral

TLDR, Natural chastisement is Russia (probably with China, Iran, NK) over-running the world as punishment for our sins (sodomy, trans, divorce, pedofilia, adultery, porn, satanism, atheism, socialism etc.). Peace comes when Russia converts to Catholicism after being consecrated to the Immaculate Heart of Mary by a Holy Pontiff that is not the anti-pope Francis.

If the people do not recognize in these scourges (of nature) the warnings of Divine Mercy, and do not return to God with truly Christian living, another terrible war will come from the East to the West. Russia with her secret armies (weapons) will battle America and will overrun Europe. The river Rhine will be overflowing with corpses and blood. - Bl. Elena Aiello (August 22, 1960)

If my requests are granted, Russia will be converted and there will be peace. If not, she will scatter her errors throughout the world, provoking wars and persecution of the Church. The good will be martyred, the Holy Father will have much to suffer, and various nations will be destroyed… But in the end, my Immaculate Heart will triumph. The Holy Father will consecrate Russia to me, Russia will be converted, and a certain period of peace will be granted to the world. - Our Lady of Fatima (July 13, 1917)

Tell them, Padre, that the Blessed Virgin said repeatedly to my cousins Francisco and Jacinta, and to me as well that many nations will disappear from the face of the earth. She said that Russia will be the instrument of chastisement chosen by Heaven to punish the whole world if the conversion of that poor Nation is not obtained beforehand… - Sr. Lucia, 1957

Supernatural chastisement of fire falling from the sky (possible three days of darkness)

"As I told you, if men do not repent and better themselves, the Father will inflict a terrible punishment on all humanity. It will be a punishment greater than the deluge, such as one will never seen before. Fire will fall from the sky and will wipe out a great part of humanity, the good as well as the bad, sparing neither priests nor faithful. The survivors will find themselves so desolate that they will envy the dead. The only arms which will remain for you will be the Rosary and the Sign left by My Son. Each day recite the prayers of the Rosary. With the Rosary, pray for the Pope, the bishops and priests." - Our Lady of Akita (October 13, 1973)