weather map

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weather map:

see weatherweather,
state of the atmosphere at a given time and place with regard to temperature, air pressure (see barometer), wind, humidity, cloudiness, and precipitation. The term weather
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.

weather map

[′weth·ər ‚map]
(meteorology)
A chart portraying the state of the atmospheric circulation and weather at a particular time over a wide area; it is derived from a careful analysis of simultaneous weather observations made at many observing points in the area.

weather map

weather mapclick for a larger image
A map showing the weather conditions prevailing, or predicted to prevail, over a considerable area. Usually, the map is based upon weather observations taken at the same time at a number of stations. The weather conditions are indicated in figures and symbols. A synoptic chart is one example of a weather map.