I did a little digging into some of the soundings for the GFS run tonight. The graphic has mixed precip making it to the AGC/ Wash county line. Interestingly, though the graphic shows mix, the sounding would indicate snow --> not sure what he error is in the algorithm there.
That being said, that warm nose is strong. This is going to be a tight one. Here is the sounding for 06z tue. 19° but damn does that temp get close to 32° at the 850 level.