Monitor the National Weather Service for your location & stay on top of current weather warnings. If your PC is on and a tornado or other warning is issued in or around your area, the TAS Talking Weather Warning System will announce the warning or warnings within 2 minutes verbally & trip a preset alarm. Supports 51 of the 52 states, American Samoa, Guam & Puerto Rico/Virgin Islands. Alaska currently doesn't use the weather warnings system, even though its available to them.