It’s actually going to come from the storm forming off the gulf coast of Florida now. Watching too many satellite feeds now. Always look to the IR water vapor to see how much is going to be carried and the the upper wind patterns for how the storm will be steered. Looks like Texas and Mexico will be hit with a tropical storm dropping lots of water later this week. Some of the rainfall from Hilary will fall on eastern drainage basins.
My original point was that no water from Hilary would cause flooding on the Rio Grande and it still stands. If any water does enter its watershed it will be caught by Lake Amistad. It is a 64,900 acre reservoir that is currently over 50 feet low.
Any water from another system is a different matter.
If the system in the Gulf does reach the Rio Grande means it would have to pass by me on the way and I’m all for that as we desperately need the rain.