The mysterious Morning Glory clouds and their possible causes

morning glory clouds australia

Aerial View of Multiple Morning Glory Clouds

The Morning Glory clouds, in Spanish, morning glory clouds or creeping clouds, is one of the less frequent clouds that exist. They are usually found between Papua New Guinea and Australia, in the Gulf of Carpentaria, in the Arafura Sea. They appear between the months of September and October, and when it seems that everything is already discovered and explained, these clouds are the rule that confirm the exception. Its formation is quite uncertain.

Very occasionally they have been observed in Mexico, the United Kingdom, Canada or Brazil. The experts have tried to study the origin and the reason for its formation, without reaching a consensus on its formation.. In addition, their behavior is far from the most common clouds that we are used to seeing. The mystery that revolves around them increases.

What are Morning Glory clouds like?

They can measure up to 1.000 kilometers in length, approximately the start of the Iberian Peninsula. Its size ranges from 1 to 2 kilometers high. In addition, they are often accompanied by strong winds, gusts and low-level shears. In its front part there are rapid movements of vertically displaced air parcels, this is what helps them to have this roll and circular shape. Due to the high gusts, its displacement reaches 60km / h! And together with the winds that make it roll, as we can see in the video, watching it produces even a shocking sensation.

morning glory clouds

Although the phenomenon has not been completely clarified, some causes are attributed. Some of the conclusions that have been reached, regardless of the complexity behind it, is that a great majority of them are formed by the mesoscale circulations associated with sea breezes existing in the areas. The frontal systems together with the high pressures that are required seem to favor their formation. Of course, when the humidity is high, which is intrinsic to every cloud and, above all, when the wind has blown strongly the day before. Be that as it may, in any case, a great sight to see.


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