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What is Heat Index?

A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the 'apparent temperature.'

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Glossary

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...

Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

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

The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...

A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.

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

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

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...