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What is Weather?

Weather is the day-to-day meteorological conditions that happen in our atmosphere. Weather can change within minutes, which is why it can be difficult to forecast.

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Glossary

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

A narrow band of strong winds in the upper atmosphere, typically flowing from west to east and influencing weather patterns.

The names given to the winds blowing from the four cardinal directions (north, east, south, and west - N, E, S, W) on a compass.

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

The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.

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

A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe...

The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

A type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.