Doppler radar map

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This map is an image that was taken using a technology known as doppler radar and displays a map of a portion of Texas that was, at that moment, experiencing a massive rain downpour. The doppler radar system uses satellite images and information to relay back images to a computer that then constructs a map. The doppler radar system utilizes colors to express changes in severe weather patterns through common colors that people in America can associate with. For example, most Americans will associate red with a warning or caution and green as perhaps cool and calm. This imagery is used by the weather service, most often, to display not so much geographical changes but changes in weather and climate throughout a specific geographic region.