This NOAA satellite image taken Friday, March 25, 2011 at 1:45 PM EDT shows clouds develop across the North-Central U.S., while the South remains mostly sunny and dry. A ridge of high pressure builds in from the Gulf of Mexico and brings mild weather. However, a small trough of low pressure moves through the Central Plains and Midwest, kicking up widespread scattered rain showers, with snow showers in the North. (AP Photo/Weather Underground)