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Glossary of Weather Terms

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Do you know the difference between a hurricane and a typhoon? Find definitions for weather terms from absolute humidity to zonal flow and everything in between in the WeatherBug weather glossary.

Trough
An elongated area of relatively low atmospheric pressure, usually not associated with a closed circulation, and thus used to distinguish from a closed low. The opposite of ridge.

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You too can help save our planet and put money back in your wallet. Learn how you can take the first steps to reduce your environmental impact, including driving green, easy ways you can conserve water, and energy saving tips. To learn more and discover the benefits of going green, visit WeatherBug’s green living section. More >