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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A mass of very cold, dry air that mostly originates over the Arctic Ocean.
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...
A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...
Snow that rises to 8 feet or higher.
A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...
The reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...
Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...
An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...
The situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...