You can tap on any color on the color code strip at the bottom of the screen, and the color’s dBZ value (which reflects, generally speaking, the intensity of precipitation) is displayed in a pop-out box. The city name and radar image times are displayed in a big, bold font at the top of the screen. RadarScope boasts some other thoughtful features. You can also choose to view city names (or not), and switch “Expert mode” (which enables you to view clear air reflectivity) on and off. RadarScope enables you to view three different radar products: reflectivity, velocity, and SR velocity. Within a minute, I was able to pan over to Buffalo and see conditions that had been updated at 8:44 a.m. On a basic animated reflectivity radar of Boston at 8:47 one morning, it displayed data images from 7:53, 8:02, 8:12, 8:31, and 8:41 a.m.-as current as possible. Perhaps because RadarScope provides only the most basic geographic information-city and state names and state borders-it’s very speedy with radar retrieval and display. (Base Velocity says there are more than 25,000 in its database.) The sizes of the cities are indicted, in a standard fashion, by the size of the type, and even the names of smaller towns are easy to read, in a white font on the black background. If you then deselect the station’s abbreviation, the program displays the names of nearby towns and cities on the map. After you’ve selected the radar station, images are displayed on a black background. RadarScope accomplishes this speed by displaying only one radar station’s data at a time-you’re panning and zooming the map, but you only view the radar data when you select a radar station. This allows you to check the radar in Seattle, then quickly pan over to Salt Lake City and then to Grand Rapids, Mich., to have a look at the conditions in those areas. on your iPod screen (with very legible major city names and radar station abbreviations). It has very fast pan and zoom capabilities that enable you to view almost the entire continental U.S.
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