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 long, narrow region in the atmosphere that transport water vapor, like a river in the sky.

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

A drainage wind that flows downhill due to gravity, often associated with cold air descending from elevated regions.

Condensation is the process by which water vapor in the air cools and changes into liquid water. This process is crucial...

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

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

A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....