Billowing
moving or flowing outward with an undulating motion.
Lumbered
move in a slow, heavy, awkward way.
Scouring
Flowing forcefully over something and removing soil or rock.
Churned
move or cause to move about vigorously.
Eruption
a sudden outbreak of something, typically something unwelcome or noisy.
becoming greater in intensity, number, amount, or volume.
becoming greater in intensity, number, amount, or volume.