Surprise Strong Thunderstorms

So if you live in Chatham county or central/southern Wake County including Apex, Cary, Holly Springs, and Garner then you heard thunder and received some very heavy rain between 4am and 7am. Yes, my previous post said this would not happen until this weekend but some conditions combined to form these storm. I do not have time to get into details as I have to leave for work, but I will let you in on some of them from an area forecast discussion from the NWS at 4:30 am.. sorry if it is too technical but it shows how so many different parameters came into play.. and I will just say computer model guidance did not pick on these storms.

Through middle morning: it is a regular boundary fiesta out there this
morning with an outflow located over the central Piedmont dropping
south... a dissipating northward-moving outflow from earlier
convection over NE SC... and a preexisting trough stretching through
the northern coastal plain and eastern Piedmont. Isolated but strong
storms continue to develop along the old outflow from Halifax County
through southern sections of the Triangle... and these storms just
southeast of Raleigh have been backbuilding in response to 25-30 knots
low level jetting at around 1000 feet... resulting in localized
training and rain totals over 1.5 inches according to Doppler radar
estimates. These storms continue to be supported by surface mass
convergence... middle level positive vorticity advection... residual
instability (goes sounder shows a lifted index of -2 to -5)... and
upper divergence associated with a 75+ knots jet diving in from the
Ohio Valley. The middle and upper level forcing for ascent will be
shifting off the Virginia coast this morning... and the exit of these
features should bring a temporary end to precipitation chances toward middle
morning.