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.
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- 1. The season of the year comprising the transition period from winter to summer occurring when the sun is approaching the summer solstice. In the
Northern Hemisphere, spring customarily includes the months of March, April and May.
2. In hydrologic terms, an issue of water from the earth; a natural fountain; a source of a reservoir of water.