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 small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...
A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...
Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...
A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...
A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...
A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...
The names given to the winds blowing from the four cardinal directions (north, east, south, and west - N, E, S, W) on a compass.
A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...
The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.
Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...