Even if the storm doesn't stall over the area, rain will be a big issue, at least inland. West Austin, south through San Antonio and well into the Rio Grande valley is all hard-packed, rocky soil and caliche that doesn't absorb water for squat. As always, low water crossings will claim a few of the daring and stupid. In my area, the storm will be little more than an inconvenience.
I swung by the grocery store yesterday on my lunch break, not thinking about the impending storm or the subsequent crowds I would encounter who were hoarding water, milk, eggs, and bread. Not only did a 10-minute errand take almost an hour, but I now have an image of everyone in Austin huddled at home, drinking water and eating french toast.
edit: just downgraded to category 1