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 cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....
A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...
A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...
Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...
A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...
Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.
A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...
Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...