What is Arctic High?

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

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

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

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...

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

A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.