Tropical Storm Bill strengthens, races north, hurricane center watching two other Atlantic systems

Tropical Storm Bill strengthened again Tuesday morning as it continued its northern journey away from the United States, the National Hurricane Center said in its 11 a.m. update.The storm is expected to be short-lived as it heads into cooler waters, meanwhile, the NHC is keeping its eyes on two other storms with tropical potential; one is likely to become the next tropical depression toward the end of the week.