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What is Black Ice?

Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt due to its transparency, thus posing a danger to drivers.

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Glossary

A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...

Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...

Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...