What is Clear?
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility. Clear sky. In meteorology, this term is also used when the cloud cover is less than 1/8 during the day or at the observation hour.
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Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...
The names given to the winds blowing from the four cardinal directions (north, east, south, and west - N, E, S, W) on a compass.
An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...
In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...
Snow that rises to 8 feet or higher.
A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...
A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...
Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...
A line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.
A very cold high pressure that originates over the Arctic Ocean.