 The National Weather Service in Greenville-Spartanburg has issued a severe thunderstorm warning for southwestern Mecklenburg County and the Piedmont of North Carolina, eastern York County and upstate South Carolina until 10.15 p.m. EDT. At 9.30 p.m. EDT, severe thunderstorms were located along a line extending from 8 miles northeast of York to 5 miles southeast of Rock Hill, moving east at 10 miles per hour. Hazard, 60 miles per hour wind gusts and quarter-size hail.