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

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

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...

A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.

A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are 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.

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

Local winds that blow from slopes to peaks as a result of the heating of the top slopes without being affected by general...

A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...

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