Dark blue cloudy sky

What is Blocking Pattern?

Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather systems from moving through.

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Glossary

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

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

Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric...

A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...

The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.

The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.

Snow that rises to 8 feet or higher.

The process by which a solid changes directly into a gas without first becoming a liquid, such as ice turning into water...

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.