Tuesday and Wednesday are the days I'm favoring for 100 or better. If we get into the 100s as early as Monday then we're probably looking at a 2012 level heatwave.
18z RAOB from IAD told the tale, plenty of surface CAPE and low level lapse rates, but absolutely pitiful mid level lapse rates and no shear. Had we better timing, this would've been a legit event for everyone.
Best I've seen is 8+. We get that, we're in for high end.
As I've said several times, good mid level lapse rates allow for storms to survive the rapid terrain changes in these parts. It's probably our best insurance policy for organized severe weather in these parts.