tatah -- then; pravartata -- began; pravrit -- the rainy season; sarva-sattva -- of all living beings; samudbhava -- the source of generation; vidyotamana -- flashing with lightning; paridhih -- its horizon; visphurjita -- agitated (by thunder); nabhah-tala -- the sky.

Then the rainy season began, giving life and sustenance to all living beings. The sky began to rumble with thunder, and lightning flashed on the horizon.