The document summarizes an extraordinary natural phenomenon known as the morning glory cloud that occurs annually in northern Australia between September and November. The morning glory cloud forms as a wave-shaped cloud up to 3.2 km high and 600-1000 km wide that moves east to west at 40 km/hr, caused by a clash of warm, moist air from the sea sliding over cooler upper layer air. Scientists have traveled to study the unique phenomenon, which also occurs in other locations around the world but does not result in cloud formation like in Australia. Since 1989, hang gliders and paragliders have surfed the cloud waves, which can produce strong turbulence and travel up to 480 km, though it requires careful navigation.