What is Warning?
A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening now, developing as we speak, and is minutes away. This weather hazard poses a threat to life and property.
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The reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...
Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...
Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...
A weather watch means there is a risk of weather hazards in the near future, which could pose a threat to life/property....
Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.
A storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.
A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...
The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...
The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.
A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...