Wednesday could be a decent ENH day if the timing works out. The dynamics aren't too bad and there will be a respectable amount of surface instability.
Back in Philly for the weekend helping my mom. It's 99° in the shade in Roxborough. Had a storm graze us juuuust enough to spike the humidity to Florida levels.
12z GFS has 23 degree air at 850 on Saturday, but Sunday it really ups the ante regionwide. Near 25 degree airmass moves over. If there isn't convection to cut out the sun, it's entirely BWI, DCA, and IAD all hit 100.
It's definitely warmer this morning. Even the mesonet stations in Maryland, which are placed in open areas away from UHI effects, only dropped into the upper 70s to near 80 degrees last night.
850 temps appear a tick warmer regionwide on the 00z GFS and Canadian. At 23c for IAD and DCA, with a SW wind, that would support a legit run at 100 degrees.
It's taken decades to invest in flood resilient infrastructure. Our society is so terribly backwards we won't have a semblance of heat resiliency until our generation is in a nursing home.