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

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

The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...

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

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...

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

Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...

A periodic warming of sea surface temperatures in the central and eastern Pacific Ocean, significantly influencing global...