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The Morning Glory cloud is a rare meteorological phenomenon occasionally observed in different locations around the world. The southern part of Northern Australia's Gulf of Carpentaria is the only known location where it can be predicted and observed on a more or less regular basis. The settlement of Burketown attracts glider pilots intent on riding this phenomenon. Morning Glory clouds can most often be observed in Burketown in September to mid-November, when the chance to see it early in the morning is approximately 40%. A Morning Glory cloud is a roll cloud that can be up to 1,000 kilometres (620 mi) long, 1 to 2 kilometres (0.62 to 1.2 mi) high, often only 100 to 200 metres (330 to 660 ft) above the ground and can move at speeds up to 60 kilometres (37 mi) per hour. Sometimes there is only one cloud, sometimes there are up to eight consecutive roll clouds. The Morning Glory is often accompanied by sudden wind squalls, intense low-level wind shear, a rapid increase in the vertical displacement of air parcels, and a sharp pressure jump at the surface. In the front of the cloud, there is strong vertical motion that transports air up through the cloud and creates the rolling appearance, while the air in the middle and rear of the cloud becomes turbulent and sinks. The cloud can also be described as a solitary wave or a soliton, which is a wave that has a single crest and moves without changing speed or shape. Morning Glory clouds have occasionally been reported in the Sea of Cortez off the Mexican coast. The phenomenon has also been observed from Sable Island, 180 km southeast of Nova Scotia. A Morning Glory also passed through Yarmouth, Nova Scotia in April 2009. In contrast to the Gulf of Carpentaria where the Morning Glory is visible in the morning, those in Nova Scotia have all occurred during the evening. Rare examples have been observed via satellite observation over the Joseph Bonaparte Gulf in the Eastern Kimberley region of Australia as well as over the Arabian Sea. A Morning Glory cloud was observed in 2007 over the Campos dos Goytacazes bay in the state of Rio de Janeiro, Brazil. In August 2011, it happened again over Peregrino Field in South Campos Basin in Brazil. The phenomenon was also recorded on Batroun's shore (Lebanon — Middle East) in September 2004. [READ THE REST OF THIS ARTICLE]
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