Real wrath-of-God type stuff

Here's how Lucan describes the panic and social upheval that accompanied the beginning of the Civil War. Pompey had fled or was fleeing and Caesar had crossed the Rubicon and was poised to invade Rome itself (The center of the world.) Lucan describes the upheval in terms of supernatural omens of doom...

Nor found they room for hope; for nature gave
Unerring portents of worse ills to come.
The angry gods filled earth and air and sea
With frequent prodigies; in darkest nights
Strange constellations sparkled through the gloom:
The pole was all afire, and torches flew
Across the depths of heaven; with horrid hair
A blazing comet stretched from east to west
And threatened change to kingdoms. From the blue
Pale lightning flashed, and in the murky air
The fire took divers shapes...

...and the orbed moon,
Hid by the shade of earth, grew pale and wan.
The sun himself, when poised in mid career,
Shrouded his burning car in blackest gloom
And plunged the world in darkness...

The jaws of Etna were agape with flame
That rose not heavenwards, but headlong fell
In smoking stream upon the Italian flank.
Then black Charybdis, from her boundless depth,
Threw up a gory sea. In piteous tones
Howled the wild dogs; the Vestal fire was snatched
From off the altar; and the flame that crowned
The Latin festival was split in twain,
As on the Theban pyre, in ancient days;
Earth tottered on its base: the mighty Alps
From off their summits shook th' eternal snow.
In huge upheaval Ocean raised his waves...

...Foul birds defiled the day; beasts left the woods
And made their lair among the streets of Rome.
All this we hear; nay more: dumb oxen spake;
Monsters were brought to birth and mothers shrieked
At their own offspring; words of dire import...