What is Trough?

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms and rain.

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Glossary

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

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

The reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...

Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...

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

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

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

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...

A type of cloud consisting mostly of small particles such as ice particles.

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...

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