What is Relative Humidity?
The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.
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A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.
Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...
The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.
Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.
Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.
A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...
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 storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.
A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...
Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...