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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The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...
A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...
A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...
A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...
Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...
A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...
A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...
The reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...
A cloud of irregular appearance, composed of irregular cloud fragments.
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....