I called Lockheed-Martin Flight Service and had a talk with one of their specialists. We looked at the radar picture and tried to figure out a viable strategy for making the trip down to the DC area that evening. Neither the usual routing over eastern PA nor the coastal routing down over NJ held promise.
Finally I said, "I hate to admit defeat, but I think I'm going to pack it in and make the trip tomorrow morning."
"I'm really glad you said that," the briefer replied. "Because if you launched tonight in this stuff, I was going to have to do a lot of paperwork."
So I set an alarm for 5:15 AM the next morning, was off the ground at 6:04 AM and was back on the ground at KVKX at 8:18 AM.
Sometimes discretion is the better part of valor...and you've got to know when to say no.