The southern part of the Gulf of Carpentaria in Northern Australia is the only known location where it can be predicted and observed regularly due to the configuration of land and sea in the area.
[7] Multiple studies have followed since then, proposing diverse mathematical models explaining the complex movements of air masses in the region.
One of the main contributors for the formation of the morning glory clouds is the mesoscale circulations associated with a difference in sea breezes that develop over the Peninsula and the Gulf.
Locals have noted that the Morning Glory is likely to occur when the humidity in the area is high, which provides moisture for the cloud to form, and when strong sea breezes have blown the preceding day.
[7] First, Cape York, which is the peninsula that lies to the east of the gulf, is large enough that sea breezes develop on both sides.
The air descending from the peninsula to the east goes underneath the inversion layer and this generates a series of waves or rolling cylinders which travel across the gulf.
There are other ways in which Morning Glory clouds form, especially in rarer cases in other parts of the world, but these are far less understood.
[citation needed] Local weather lore in the area suggests that when the fridges frost over and the café tables' corners curl upwards at the Burketown Pub, there is enough moisture in the air for the clouds to form.
[9] Although the Morning Glory clouds over the southern part of the Gulf of Carpentaria are the most frequent and predictable, similar phenomena have occasionally been observed elsewhere, e.g., over central United States, in the English Channel, Munich,[4] Berlin, eastern Russia, and other maritime regions of Australia.
[citation needed] There was another rare roll cloud formation that was observed in Masury, Ohio, 41.211168°N, -80.537849°W, on 27 May 2012, at 2:30 pm EST.
[citation needed] Morning Glory clouds have occasionally been reported on Cape Cod and in the Gulf of California off the Mexican coast.
[citation needed] A Morning Glory cloud was observed in 2007 over the Campos dos Goytacazes bay in the state of Rio de Janeiro, Brazil.