All of a sudden
Out of nowhere.
The lights go dim and dimmer, flicker once or twice, then kaput. Something's wrong with the electricity, the transformer's down.
Thunder rolls a bowling ball through the valley, then another and another. Boulders shudder.
Rain pummels the tin roof. The gutter may not hold, never mind the center.
In the mountains, lightning seeks a target or two. Once it's made up its mind, it never misses.
Everything drowns in everything happening at once.
And then it's all over.
Somewhere.