PoD: Harvey continues rapidly intensifying on August 24th and 25th (IOTL, dry air entered the system, preventing it from strengthening until the 25th, hours before landfall; it hit as a Category 4 (well, 130 miles per hour) near Port Aransas and Rockport).
So, let's assume that, when it makes landfall (at the same place as OTL), its a high-end Category 5 hurricane (assume the winds are 185 miles per hour, similar to what Irma was when it hit Barbuda).
Effects, anyone? (IMO, Rockport-Fulton and Port Aransas are going to be gone. Literally.)