Three Landslides

There will be three significant landslides before Day of Resurrection. One in the East, one in the West and one in Arabia. The Earth will swallow everything above it and as a result, many people will die. This will take place when evil prevails.

Huzaifa-bin-Usaid al-Ghifari reported: Allah's Messenger صلى الله عليه وسلم  came to us all of a sudden as we were talking. He said: "What are you discussing?" We said: "We are talking about the Last Hour." Thereupon, he  صلى الله عليه وسلم  said: "It will not come until you see ten signs before it, He made a mention of the Smoke, the Dajjal (Anti-Christ), the Daabba, the Rising of the Sun from the West, the Descent of Jesus Son of Mary عليه السلام (from Heaven), the emergence of Ya'juj and Ma'juj (Gog & MaGog), and Khusuf (Landslides) will occur in three places: one in the East, one in the West and one in Arabian Peninsula. At the end, a Fire would burn forth from Yemen (or from Aden according to Ahmad), which would drive people to the place of their final assembly (before they get resurrected by God)."  (Sahih Muslim, Ahmad)

Most probably the Khusf (landslide) in the West will affect the U.S. (but may also affect Canada).

Umm Salmah reported that I heard the Messenger of Allah صلى الله عليه وسلم   saying, "After me, there will be a landslide in the East, a landslide in the West and a landslide in the Peninsula of Arabia." I asked, "Oh Messenger of Allah will the Earth give way, though there are some pious people above it." The Prophet صلى الله عليه وسلم  replied, "When its inhabitants do a lot of evil deeds."   (Tabrani fil Awsat)

Umm Salamah رضي الله عنها narrated: The Prophet صلى الله عليه وسلم said: "Disagreement will occur upon the death of a Caliph and a man of the people of Medina will flee to Mecca. Some of the people of Mecca will come to him, bring him out against his will and make him accept their Bay'a (being chosen as a leader) (at a location) between the Rukn (corner of the Ka'aba containing the Black Stone)  and the Maqam (Place) of Abraham (located on a side of the Ka'ba). An army from the people of AshSham (Greater Syria) will then be sent against him from but Khusf (landslide) will happen to them (they will die) in the Baidaa (desert) between Mecca and Medina.

The Khusf (landslide) that will cause the army of the Mahdi's enemies to perish is most likely the same Khusf (landslide) expected to occur in Arabia as a Sign of the Day of Resurrection according to the  above Hadiths.