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 occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...
Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.
Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...
Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.
A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...
Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...
The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...
An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric...
A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...
The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....