What is Weather map?
[[Image:Surface analysis.gif|thumb|right|250px|A surface weather analysis for the [[United States]] on October 21, 2006]] A '''weather map''' is a [[wikt:tool|tool]]. It shows facts about the [[weather]] quickly.<ref>{{cite web|author=Encarta|year=2009|url=http://encarta.msn.com/dictionary_/chart.html|title=Chart|publisher=[[Microsoft Corporation]]|accessdate=2007-11-25|archive-date=2011-05-25|archive-url=https://web.archive.org/web/20110525151653/http://encarta.msn.com/dictionary_/chart.html|url-status=dead}}</ref> Weather maps have been used from the mid-19th century, for study and for [[weather forecasting]]. Some maps show differences of [[temperature]], and [[weather fronts]]. [[Image:Wind barbs.gif|thumb|right|150px|Wind barb interpretation]] A station model is a [[symbol]]ic picture showing the [[weather]] at a [[Weather station|reporting station]]. [[Meteorologist]]s made the station model to put down many weather elements in a small space on weather maps. Maps thickly filled with station-model plots can be hard to read. However, they help meteorologists, [[pilot]]s, and [[mariner]]s to see important weather patterns. A computer draws a station model for every place of observation. The station model is mostly used for surface-weather maps. It can also be used to show the weather in the sky, though. A complete station-model map lets people study patterns in [[air pressure]], [[temperature]], [[wind]], [[cloud]] cover, and [[precipitation]].<ref>CoCoRAHS (2005). [http://ccc.atmos.colostate.edu/~hail/teachers/lessons/isopleths.htm Introduction to Drawing Isopleths.] {{Webarchive|url=https://web.archive.org/web/20070428172620/http://ccc.atmos.colostate.edu/~hail/teachers/lessons/isopleths.htm |date=2007-04-28 }} Colorado Climate Center. Retrieved on 2007-04-29.</ref> == History == People first began using weather charts in a modern way in the mid-19th century. They began using them to make a [[theory]] about [[storm]] systems.<ref>{{cite web|author=Human Intelligence|url=http://www.indiana.edu/~intell/g