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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 front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...

The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...

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

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...

The situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...

A line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.

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

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

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