![](http://www.alamy.com/thumbs/6/B0A70F57-7BD2-4A60-9FA8-F38D4FD4E80F/RE1543.jpg)
Dramatic ominous atmospheric mammatus clouds before a thunderstorm in western Sydney, NSW, Australia
Size: 3200px × 2119px
Location: Mt Annan, NSW, Australia
Photo credit: © Karen Black / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: atmosphere, atmospheric, australia, background, cloud, clouds, cloudscape, dark, dramatic, foreboding, formation, gray, grey, heaven, mammatus, mood, moody, nature, nsw, ominous, overcast, pattern, skies, sky, storm, stormy, sydney, thunderstorm, weather