The low pressure should become Barry by end of the day today, I would think. But honestly, it doesn't matter. At this point, this is definitely going to be a rain maker. We're talking maybe over a foot of rain for some places. And if those "some places" are LA, which is likely, that could be bad news for the low lying state.
Biggest thing to watch for now is how long it sits out in the GOM. The water there is nice and warm and should fuel development quite rapidly. This is just my call, but here's my thoughts:
If it moves quickly, as initially thought, landfall would be near the TX/LA border and be a decent rainmaker. Would probably be a high end TS, worst case scenario. Still, nothing to sneeze at. I hate when I hear people say "it's only going to be a Tropical Storm" as if they aren't incredibly deadly, too. Storm surge would be decent considering the path it would take, but not crazy.
If it takes it's time in the GOM and stalls out, I think it's because the steering currents block it from the west, meaning landfall would be more in LA or East LA (watch out, Cheech). By stalling out, it gives the storm more time to intensify. Rapid intensification in the GOM happens, well, rapidly. Hurricane Michael went from a TS in the GOM off the Yucatan Penninsula to being a Cat 5 hurricane at landfall in less than 48 hours. And what's scary and needs to be kept at the front of your mind is that when it became a Cat 1 hurricane the day before landfall, models were showing it as a Cat 2 or 3 hurricane at landfall with most mets thinking a Cat 3 was a bit far fetched.
This isn't to say Barry will be a major hurricane. Hell, it might not even get named Barry (although, it most likely will). The point is, if you live on the gulf coast, be prepared for anything at this point. Many people in the path didn't take appropriate precautions because "it was only going to be a Tropical Storm" and some lost their lives.
I can't stress this enough: NO TWO TROPICAL SYSTEMS ARE THE SAME! Just because you lived through one and it wasn't bad doesn't mean that you'll live through all the rest. If you ever listen to the news after a hurricane, almost every single survivor they rescue from near death tells the news reporter the same thing: "We'd rode out storms bigger than this before with no problem so we thought we'd be safe this time."
Stay safe, everyone. And don't be an idi... ah. Caught myself. That was close. Don't be an i-word.