I've Checked My Computer Models

Very concerned that we're seeing start of rapid strengthening.  If you are in a Hurricane Warning area, take this storm seriously!! #Harvey pic.twitter.com/7vmZ3BrjNt

— 🌀Rob Lightbown🌪️ (@crownweather) August 24, 2017

I don't know about the wind, but the rain down there is going to be insane.

Edit: And my Anti-Pete Delkus Thunder Truck Radar indicates the thing seems to be forming into a pretty good hurricane.

Edit: These are the rainfall predictions. (Disclaimer: They are from Delkus):

Edit @ 12:09 p.m.: This appears to have escalated rapidly.

Edit: 1:31 p.m. Uh, oh:

Just in: As #Harvey approaches, the mayor of Corpus Christi is asking people to evacuate voluntarily. https://t.co/gug1altkMN pic.twitter.com/lgAbsNxb6f

— Texas Tribune (@TexasTribune) August 24, 2017