Impressive 18z sounding from IAD:
Surface CAPE of ~3,100
DCAPE of ~1,400
Lapse rage of -8.4°c/km
Classic robust wet microburst sounding.
One red flag for more widespread convection is the convective temp of 100° and a 700mb temp of almost 11°, which is still pretty capped. If we get shielded over with cirrus, then we might lose the oompf needed to get the more robust cluster and line segments going.