(Longview, WA)  --  The National Weather Service says a small tornado ripped a six-block path through Cowlitz County.  The EF-1 twister, which touched down around one p.m. yesterday in Longview, uprooted trees and tore roofs off homes and businesses.  Officials say the tornado started at a Safeway on 15th Avenue and traveled along Vandercook Way.  No injuries were reported.