National Weather Service Glossary
This glossary contains information on more than 2000 terms, phrases and abbreviations used by the NWS. Many of these terms and abbreviations are used by NWS forecasters to communicate between each other and have been in use for many years and before many NWS products were directly available to the public. It is the purpose of this glossary to aid the general public in better understanding NWS products.
You can either type in the word you are looking for in the box below or browse by letter.
Browse by letter:
- The standard scale used to measure temperature in most areas outside the United States. On this scale, the freezing point of water is 0Â°F and the boiling point is 100Â°F. To convert a Fahrenheit temperature to Celsius, subtract 32 from it and then multiply by 5/9:
Â°C = (Â°F - 32) * 5/9