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 lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.
The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...
A periodic warming of sea surface temperatures in the central and eastern Pacific Ocean, significantly influencing global...
A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...
A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...
Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...
A weather front formed when a cold front overtakes a warm front, lifting the warm air off the ground and resulting in a mix...
The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...