The National Weather Service has rated the deadly tornado in Harrisburg, Illinois an EF-4. A meteorologist estimates the storm was 200 yards wide and the top winds 170 miles per hour. Six people are dead and about 100 injured. (Feb. 29) Subscribe to the Associated Press: bit.ly Download AP Mobile: www.ap.org Associated Press on Facebook: apne.ws Associated Press on Twitter: apne.ws Associated Press on Google+: bit.ly