Looks like it is a race to see which system can claim the name Stan first. TD 19 is running out of time and may not even make it to tropical storm status. It doesn't look that great on satellite at the moment. TD 20 also has a limited window in the short-term, though it appears it will have another opportunity in the Gulf in a couple of days. Most of the model guidance seems to keep this system well south of the Texas/Mexico border, but things could obviously change.

Interesting to read in the discussion for TD 20 that frictional convergence over land may actually help the currently broad circulation tighten up, allowing it to strengthen more quickly over the Bay of Campeche when it re-emerges. It'll be interesting to see how that plays out.