(**Update)NWS confirms EF-1 tornado in Warren County Sunday afternoon...

The National Weather Service now says a small tornado did roar through northwestern Pennsylvania... downing trees and power lines as far east as Warren County.  The storm that spauned the EF-1 twister hit parts of Warren... Erie... and, Crawford counties about 5:30 p.m. Sunday.  No injuries were reported... but. Warren County Public Safety Director Todd Lake says several trees were downed... and, several PENELEC customers remain without power.  Most should be restored by late tonight.  The main area affected in Warren County was around Route 62 in North Warren.  Lake says he asked the weather service to investigate because some of the downed trees were ''crisscrossed'' which he says is ``a major tell-tale sign of tornadic activity.''  EF-1 tornadoes produce winds of about 90 miles per hour.