AO obs and forecast from the CPC below...Yeah, it's hardly stable
As for the WAR, it's has been setting up (look at any u/a charts). it hasn't been able to flex/exert westward, like it did for our first bout of heat last month. So we're stuck between central CONUS ridging and s/w lobes that pinch off over the maritimes on the west side of the ATL ridge.