Dark blue cloudy sky

What is Hail?

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

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Glossary

The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...

A cloud of irregular appearance, composed of irregular cloud fragments.

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.

The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...

The term 'cloudy' refers to weather conditions characterized by a significant amount of cloud cover in the sky. This may...

A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...

The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...

An instrument for measuring atmospheric pressure.

A large body of air having similar horizontal temperature and moisture characteristics.