RALEIGH, N.C. (WNCN) — As North Carolina braces for a wet weekend, the National Hurricane Center is now eyeing two unrelated storm systems in the Atlantic. While monitoring has been ongoing for Tropical Storm Jerry since Tuesday, the NHC announced late Thursday night that a new system has formed. According to the NHC, Subtropical Storm Karen has maximum sustained winds of 45 miles per hour and is moving northeast at 9 miles per hour.