 The state of the atmosphere at a specific time and a specific place

 The amount of water vapor present in the air

 the measure of the amount of water vapor present in the air compared to the amount needed for saturation at a specific temperature

 The temperature at which air is saturated and condensation forms is the dew point

When air is cooled to its dew point near the ground, a stratus cloud is formed that we call fog

 stratus  cirrus  cumulus  add nimbus to any name means that the cloud has rain or snow attached to it

 masses of puffy white  They tower at great heights and can be associate with thunderstorms

 appear fibrous or curly  They are high and thin  white and feathery  made of ice crystals because of their height

 form at very low altitudes  associated with fair weather, rain, or even snow  Clouds are awesome to watch! Each one is unique

 Water falling from clouds  snow  ice  rain  hail  sleet  The air temperature determines whether water forms rain, snow, sleet or hail

 Chapter 16 Weather  Page 454