What is Isobar?

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

An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...

Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

Condensation is the process by which water vapor in the air cools and changes into liquid water. This process is crucial...

A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...

A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky...

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

A mass of very cold, dry air that mostly originates over the Arctic Ocean.