I don't know if this link has been posted before. It's a map of the U.S. that shows active Amber Alerts, Attempts, and Found and is refreshed every five minutes. You can roll your mouse over each symbol for information and also get additional information by scrolling down and clicking on each incident in the area below the map.
http://amberalerts.globalincidentmap.com/home.php
http://amberalerts.globalincidentmap.com/home.php
