Impact Based Warning System http://wkms.org en National Weather Service to Use New Warning System http://wkms.org/post/national-weather-service-use-new-warning-system <p></p><p>The National Weather Service is using a new severe weather warning system in Kentucky starting April 1. NWS spokesperson Rick Shanklin says the Impact Based Warning System is primarily for tornado warnings, especially after the 2011 Joplin, Mo., tornado. Wed, 27 Mar 2013 21:09:09 +0000 Whitney Jones 29840 at http://wkms.org National Weather Service to Use New Warning System