Don, nice to see those blooms in your area.
Below is a post I made July 4th 2013 (I expect the same this year as well)

Posted by Rob North Tennessee on July 4, 2013, 9:19 am

Not sure about your location, but around here it seems most all yuccas are blooming.
This dosent happen often and who knows, might see some crosses one day.
Yuccas now blooming:
Y elata *(this yucca has died after the vortex)
Y glorioso
Y recurvafolia
Y unknown hybrid wild tree yucca
Y filamentosa
Y flaccida
* there are two species not blooming and they are
Y rostrata
Y torreyi *(this yucca has died after the vortex)