There are a bunch of events in Mobile, AL, namely 18 & Over 2.5 Women, 4.5 Men and Women, and 5.0 Men and Women. Unfortunately, according to Accuweather's 10-day forecast, there is a almost certain chance of rain on Friday and Saturday.
So, that isn't looking promising. Yes, it is still hurricane season in the Gulf, and yes this rain is from what may become a named storm. In some years the USTA has avoided Florida and the Southeast the first few weekends of Nationals as hurricane season winds down, but Mobile is up the first week this year and this may be the result.
And no, there are many (any?) real indoor courts in the area, so if it rains, they are hoping for short sets at best or struggling to complete the event at worst.
Also in potential danger is the 18 & Over 3.0 event in Orlando at the National Campus, where rain is forecast as well.
The chance of rain is about the same, just swapped days, but the hours of precipitation is lower, so perhaps less of the event will be disrupted. There are also some indoor courts at the location but they aren't always available to be used.
Thankfully, sort of, there is an event in the Southwest in Surprise, AZ where the 18 & Over 3.5 event will be played, and I don't think it is going to rain there.
No rain, but hot! I'm guessing players would take extreme (but dry) heat over rained out matches and a shortened event, but feel free to voice your opinion.
Now, there is a chance of "weather" in any location, it has rained on events in Arizona and California before, but the chance of rain/storms/hurricanes is higher in some locations than others. Is the USTA right to use facilities they own or have a lot of capacity at the risk of rain? Or should they primarily go to locations where the risk is lower?










