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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In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...
A narrow band of strong winds in the upper atmosphere, typically flowing from west to east and influencing weather patterns.
Nimbostratus clouds are thick, dark, gray clouds associated with rainy and gloomy days that block the Sun. These clouds,...
A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...
Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...
Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...
Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...
The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...
An instrument for measuring atmospheric pressure.
Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.