The construction of tall buildings
In his time ... lives will be longer... (Ibn Hajar al-Haythami, Al-Qawl al-Mukhtasar fi `Alamat al-Mahdi al-Muntadhar, p. 43)
The increasing of false prophets.
The Day of Judgment will not take place until some 30 liars all claiming to be the Messenger of Allah are sent. (Tirmidhi, Fitan 43; Sunan Abu Dawud, Malahim 16)
Severe floods
The Hour will not come until there has been rain which destroy all dwellings. (Ash-Sharani, Mukhtasar Tazkirah al-Qurtubi, p. 253)
The destruction of great cities
Great cities will be ruined, and it will be as if they had not existed the day before. (Al-Muttaqi al-Hindi, Al-Burhan fi Alamat al-Mahdi, p. 38)
The global pervasiveness of disorder and conflict
At a time when the world will be in utter confusion and disorder (harj), tribulation will appear... WHEN ROADS WILL BE CUT, some will attack some others... (Al-Muttaqi al-Hindi, Al-Burhan fi Alamat al-Mahdi Akhir az-Zaman, p. 12)