ice pellets or granules of frozen rain. Occurs when rain falls into a layer of air with temperatures below freezing. Sleet usually bounces when hitting a surface and does not stick, but can accumulate on roadways causing a hazard to motorists.
Precipitation consisting of transparent pellets of ice, 5 millimeters or less in diameter. Also called ice pellets. Forms when snow enters a warm layer of air above the surface and melts and then enters a deep layer of sub freezing air on the surface and refreezes.
Frozen precipitation that results when rain drops freeze while falling, before hitting the ground. This occurs when rain falls through a layer of colder air underlying a layer of warmer air. See Temperature Inversion.
Raindrops that freeze into ice pellets before reaching the ground. Sleet usually bounces when hitting a surface and does not stick to objects. However, it can accumulate like snow and cause a hazard to motorists.
Also known as ice pellets, it is winter precipitation in the form of small bits or pellets of ice that rebound after striking the ground or any other hard surface. It is reported as "PE" in an observation and on the METAR.
In the United Kingdom and other Commonwealth countries, sleet refers to snow that has partially melted on its fall to the ground due to surrounding air that is sufficiently warm to partially melt it while falling; but not warm enough to fully melt it into rain.