The first question that any reasonable person may ask as if the technology exists? The answer is a simple "without quetion". Does that necessarily mean that Hurricane Harvey was a manufactured event tied to some nefarious purpose? It certainly does not follow that because the technology exists, that the use of proven weather modification is a given (ie "Air Force Owning the Weather 2025).
Making the Case for a Manufactured Weather Event
Dean Wigington has provided one of the most lucid accounts of why Hurrican Harvey is a manufactured weather event: