Sleet forms when snows travels through a layer of warm air, melting into raindrops, before re-freezing into tiny ice pellets upon hitting a colder layer of air.Know More
Sleet can only form under very specific weather conditions, which is why it is not as common as other forms of precipitation. It usually occurs during the winter when the proper conditions are most common. Sleet is different than freezing rain. Freezing rain also falls through a layer of cold air towards the ground. However, it freezes upon contact with the object and not in the air. Freezing rain lands as rain, but sleet lands as ice. Sleet is also different than hail. Similarly to sleet, hail is made of ice. Hail, however, freezes while in the clouds. Sleet freezes while it falls.
Additionally, hail freezes in an outward direction, but sleet freezes in an inward direction. Sleet is most common in the eastern United States and Canada, where warm air from the Gulf of Mexico flows north and can create the warm layer of air needed to form sleet. Unlike other forms of precipitation, sleet is very light and does not collect easily. Because of this, sleet cannot harm crops or vehicles.Learn more about Storms
Although science is very advanced, there is not enough data to fully understand all the reasons behind tornado formation, but they are believed to occur when rotating thunderstorms form mesocyclones. Once the mesocyclone forms, temperature differentials cause air to wrap around it.Full Answer >
Twisters, or tornadoes, form during super cell thunderstorms in which a column of air rotates, according to The National Center of Atmospheric Research. The air increases speed in an updraft of the thunderstorm, and a funnel cloud forms. Once the funnel of wind hits the ground, it is a tornado.Full Answer >
Because hurricanes use warm, moist air as fuel, they form over warm ocean waters near the equator. According to NASA, a hurricane is a type of tropical cyclone that forms over the surface of the Atlantic or eastern Pacific Ocean.Full Answer >
In its simplest form, thunder is the result of a shockwave that breaks the sound barrier. Thunder forms as the air around a bolt of lightning becomes superheated and explodes, producing a shockwave. This shockwave travels faster than the speed of sound, which produces a sonic boom, just as a fighter jet does when it travels faster than the speed of sound.Full Answer >