Weather Resources - Glossary

Wondering what “graupel” is? Or how about “virga”? You have come to the right place. This section contains the definitions of several hundred weather related terms.

Please contact us if you have a suggestion for additional terms.

We have also developed a special glossary section with winter weather terms only.

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Kelvin (Temperature Scale) - A temperature scale in which 0°K is the point at which all molecular motion ceases, called absolute zero (approximately -473°F)

Knot - A unit of speed equal to 1 nautical mile per hour. It is equivalent to 1.15 mph.

Portions of the 9NEWS Weather Glossary were taken from the second edition of the Glossary of Meteorology published by the American Meteorological Society (AMS). © 2009 American Meteorological Society