THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A* TORNADO WARNING FOR... NORTHERN UNION PARISH IN NORTH CENTRAL LOUISIANA...* UNTIL 315 AM CST.* AT 233 AM CST, A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO WAS LOCATED 7 MILES NORTH OF FARMERVILLE, OR 15 MILES SOUTHWEST OF HUTTIG, MOVING EAST AT 50 MPH.