(Rev 8:6-8) So the seven angels who had the seven trumpets prepared themselves to sound. {7} The first angel sounded: And hail and fire followed, mingled with blood, and they were thrown to the earth. And a third of the trees were burned up, and all green grass was burned up. {8} Then the second angel sounded: And something like a great mountain burning with fire was thrown into the sea, and a third of the sea became blood.
John described this atomic fallout as hail since it looks much the same as ordinary hailstones. In test blasts these particles have generally been the size of a marble, ie. roughly 1 cm (0.4 inch) in diameter, and even larger close to the burst point. Atomic hail in this size arrives on the ground within one day after the explosion....A moment after an air-burst nuclear explosion, people on the ground would be instantly reduced to super-heated gases. Their gaseous remains would then be raised miles above the earth by the fiery atomic whirlwind. When the shock waves and ferocious updrafts quieted down, the forces of gravity would eventually return the atomic hail, burning debris, and vaporized blood of the dead to earth" (Today's Technology in Bible Prophecy, Charles Miller, p62,163).
Other references:
(Isa 24:1) Behold, the LORD makes the earth empty and makes it waste, Distorts its surface And scatters abroad its inhabitants.
(Hosea 8:14) "For Israel has forgotten his Maker, And has built temples; Judah also has multiplied fortified cities; But I will send fire upon his cities, And it shall devour his palaces."
(Joel 2:30) "And I will show wonders in the heavens and in the earth: Blood and fire and pillars of smoke.
(Amos 7:4) Thus the Lord GOD showed me: Behold, the Lord GOD called for conflict by fire, and it consumed the great deep and devoured the territory.
(Zep 1:18) Neither their silver nor their gold Shall be able to deliver them In the day of the Lord's wrath; But the whole land shall be devoured By the fire of His jealousy, For He will make speedy riddance Of all those who dwell in the land.
(Zec 14:12) And this shall be the plague with which the LORD will strike all the people who fought against Jerusalem: Their flesh shall dissolve while they stand on their feet, Their eyes shall dissolve in their sockets, And their tongues shall dissolve in their mouths.
(Mat 24:29) "Immediately after the tribulation of those days the sun will be darkened, and the moon will not give its light; the stars will fall from heaven, and the powers of the heavens will be shaken.
(Mark 13:25) "the stars of heaven will fall, and the powers in the heavens will be shaken.
(2 Pet 3:10) But the day of the Lord will come as a thief in the night, in which the heavens will pass away with a great noise, and the elements will melt with fervent heat; both the earth and the works that are in it will be burned up.