Definition of reservoir. 1 : a place where something is kept in store: such asa : an artificial lake where water is collected and kept in quantity for useb : a part of an apparatus in which a liquid is heldc : supply, store a large reservoir of educated people.
Four types of winter precipitation. While all forms of precipitation start as snow high up in the clouds, there are four primary types that eventually reach the ground: snow, sleet, freezing rain and plain ol' rain. Snow occurs when the atmosphere is cold all the way from the clouds to down here at the surface.
Snow is the the water vapor that freezes in the clouds before it falls.Water freezes at 32 degrees Fahrenheit. So if it is 32 degrees Fahrenheit or colder inside the clouds, it will snow. Air does not hold water very well when the temperature is less than 15 degrees Fahrenheit. So for snow to fall and stay on the ground, the temperature has to be between 15 and the 30s degrees Fahrenheit. Snow might stay on the ground if the temperature is in the low 40s. Will we have snow on Christmas?