Monstrous wall clouds crawl across the sky as storm creeps up on Colorado residents (PHOTOS, VIDEOS)

Another round of heavy storms blasted Colorado, the American West, with heavy rain, lightning, strong winds and pea to nickel size hailstones. Ominous-looking wall clouds created the biggest buzz on social media platforms, with local residents posting stunning images of the phenomenon.

Tornado sirens went off in Aurora, but there was no official tornado warning or touch down, CBS Denver reported, adding that strong winds did cause some minor damage, however.

Short videos of the apocalyptic funnel clouds, lazily rotating around each other, made waves on social media.