USA Today up to six in Alabama Twisters kill at least 16 in Arkansas  USA Today Twisters kill at least 18, including 16 in Arkansas up to six in Alabama USA Today USA Today Associated Press Twisters kill at least 18, including 16 in Arkansas Twisters kill at least 18, including 16 in Arkansas USA Today up to six in Alabama Twisters kill at least 10 in Arkansas Twisters kill at least 18, including 16 in Arkansas Twisters kill at least 18, including 16 in Arkansas Twisters kill at least 18, including 16 in Arkansas USA Today usatoday.com Twisters kill at least 10 in Arkansas USA Today USA Today USA Today Twisters kill at least 18, including 16 in Arkansas Twisters kill at least 18, including 16 in Arkansas Chicago Tribune USA Today Twisters kill at least 18, including 16 in Arkansas Twisters kill at least 18, including 16 in Arkansas USA Today Twisters kill at least 18, including 16 in Arkansas Twisters kill at least 16 in Arkansas