Virgin Airlines posted this photo in 2017. Weather observers say these are known as cloud rolls or cloud streets. They are formed by a wave like disturbance pattern. In northern Australia these are created by two colliding sea breeze fronts and locally known as the morning glory
A rare meteorological phenomenon, the Morning Glory cloud is not thoroughly understood but is believed to be the result of a collision between a humid easterly front from the Coral Sea and a warm westerly front from the Gulf of Carpentaria. At night, the air over Cape York cools and slides beneath a layer of warm air, leading to the spectacle. The low-level atmospheric waves “are usually about 1–2 km in height and can span up to 1,000 km in length,” said Bureau of Meteorology Forecaster Andrew Bufalino. They can also appear as one solitary cloud or as up to 10 consecutive roll clouds.
This formation, below, over the USA, is what US Health Secretary Robert F Kennedy Jnr is referring to:
