CoD's severe weather warnings (kamala.cod.edu/svr) weren't updating either. Actually, I'm not sure if any of their products are updating. Thank goodness for GR3!
It's amazing how closely the two mesos have tracked (regarding the two intense mesos that track just north of I40 in TN). The current supercell with a meso in central Humphreys county appears to be about 10 miles south of where the supercell now leaving Roberston co. (crossing the state border) tracked. Both storms had/have intense rotation, with large overall couplet size. There was another good instance of mesocyclone training that occurred with two supercells that tracked over Henry and Stewart counties in extreme northern TN. I can't imagine that either of the north-of-I40 storms didn't produce long-track tornadoes given the intensity and persistence of their mesos.
EDIT: PDS tornado watches are issued when the SPC believes there is an enhanced threat of strong or violent tornadoes. Therefore, the conditions that favor such tornadoes would need to be in place for the PDS tornado watch to be issued -- namely, intense low-level shear, supercell storm mode, etc. PDS Severe watches are issued for either widespread damaging wind events (e.g. derechos) or for expected reports of very high winds (>95mph). I remember one PDS severe watch in northern MO years ago that mentioned thunderstorm winds to 105mph possible.