Extreme weather

Montevideo, the impressive 'shelf cloud' heralds the coming storm - Photo

Weather alert in the Uruguayan capital. Spectacular images of the shelf cloud have been shared on social media


The storm arriving in Montevideo today, predicted by

a warning for dangerous weather conditions,

presented itself in the

fascinating and disturbing

form of a 'shelf cloud'.

Many photographed the unusual phenomenon, sharing

images taken from various points of the

Uruguayan capital on social media.


shelf cloud

- not to be confused with

wall clouds,

which are usually found at the tail end of a storm, or


- is a low, horizontal, arching cloud that forms

on the leading edge of a storm

due to of the cold air pushed downward by the storm cloud contrasting with the warmer, more humid air mass rising from the ground.