Mysterious Cloud Patterns Sweep Australia

Unusual and captivating cloud formations stretching over 1,000 kilometers appeared over Western Australia and the Northern Territory. Experts speculate that gravity waves and disturbances in the stable atmosphere caused the complex patterns. The large clouds with arced edges may have been shaped by gravity waves on a larger scale, while the cloud boundaries could have been influenced by the topography below. The clouds resembled fallstreak clouds but formed at lower levels. The spectacle was short-lived, disappearing by late morning due to destabilization of the lower atmosphere.