Yeah it hasn't been very good with this pulse stuff. Not sure that's even just it - the NAM nest has been off as well. I think it just has to do with how pulsey things have been. No way for even a mesoscale model to figure out exactly where the first storms will pop and then getting outflow right is even tougher.
That said - I do think south of DC is where I'd rather be for storms today. The front is around - so if you're on the right side of it that'll help as well. DCAPE is substantially lower in most of the area today as well.