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 term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...
Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...
A storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.
Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...
An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...
The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...
An image on the weather radar that is convex to the direction of movement and resembles an arc shape, caused by mesoscale...
A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...