Blizzard

Blizzard is a blinding snowstorm with strong, cold winds. A blizzard occurs when a cold air mass... More >>

Cloud

Cloud is a mass of water droplets or ice crystals so small that the tiniest puff of wind can... More >>

Cloud seeding

Cloud seeding, also called rainmaking, is a process that attempts to cause clouds to produce... More >>

Cloudburst

Cloudburst is a sudden heavy rain falling for a short period of time in a small area. Cloudbursts... More >>

Condensation

Condensation is the changing of a gas or a vapor into a liquid by cooling. A cloud is a... More >>

Contrail

Contrail, KON trayl, is a thin line of cloud that forms behind aircraft at high altitudes.... More >>

Dew

Dew is the name given to the glistening beads of water that often appear on blades of grass,... More >>

Dew point

Dew point is the temperature at which moisture in the air begins to condense. The dew point is... More >>

Fog

Fog is a collection of tiny water droplets that float in the air. Fog is similar to clouds,... More >>

Hail

Hail is a precipitation in the form of round or irregularly shaped lumps of ice called... More >>

Humidity

Humidity is a term that describes the amount of water vapor in the air. The humidity varies... More >>

Rain shadow

Rain shadow occurs where a mountain range bars the path of moist winds that blow from a body of... More >>

Rainbow

Rainbow is a circular arc of colors that appears in the sky when raindrops are illuminated by... More >>

Sleet

Sleet consists of transparent, solid grains of ice that are smaller than 5 millimeters (1/5 inch)... More >>