Destructive events like these are often associated with:
the judgment of God (1 Samuel 14:15; Psalm 18:7–8; Isaiah 2:19, 21; 5:25; 13:13; 24:18; 29:5–6; Jeremiah 14:12; 21:6–7; Ezekiel 14:21; Amos 1:1) and
the end of the age (Isaiah 24:18; 29:5–6; Ezekiel 38:19; Joel 2:10; Haggai 2:6, 21; Zechariah 14:4; compare Revelation 6:12; 8:5; 11:13, 19; 16:18).
great signs from heaven: See study note on 21:25.