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FOR USE WITH FEATURE PACKAGE FOR THURSDAY OCT. 23--Ken Davidson, director of the National Climatic Data Center in Asheville, N.C., sits beside one of the NEXRAD computer systems located in the center Oct. 2, 1997. Every day the center adds 55 gigabytes of new informaton or the equivalent of 18 million pages of data about the worlds climatic activity. (AP Photo/Alan Marler)