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The latest doppler radar images in the United States from the National Weather Service, including national composites and one hour radar loops.
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This page shows rainfall radar images at half-hourly intervals, for the last six hours. The key shows how the colours correspond to the amount of rainfall. The time shown on the radar is local time. These radar images are covered by Crown copyright and remain the property of the Met Office.
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Radar images show the location of rain in relation to local features such as the coastline, with different colours used to depict rainfall intensity. There are fifteen levels of rainfall intensity shown. The images are in scales of 128 km radius and 256 km radius. State boundaries are indicated, as are abbreviated state and town names.
Radar images are normally updated every 10 minutes, however note that there are full and part-time radars. Part-time radars have routine periods when weather watch coverage is not available. This normally occurs, up to 4 times a day, for approximately 1.5 hours. During these periods these radars will be engaged in tracking of high-level balloons for the measurement of winds in the upper atmosphere.
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The image displays the hourly accumulated precipitation as measured by the weather radars. The radii around the radars are 120 and 240 kilometres. Areas in red denote heavy rain/snow, yellow moderate rain/snow and green and blue light rain/snow during the hour indicated. The page will refresh itself on regular intervals. Once new observations arrive, the sequence of images displayed will automatically move forward in time.
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