Now that climate change — in the form of major hurricanes, tornadoes and other natural disasters — has reached the point where it is regularly killing significant numbers of Americans, I suspect that weather modification is going to go through a resurgence. The technology has been around for decades in various forms, but the priority has not been there to make it a focus of large scale spending as part of capital infrastructure.
Just as we have large systems in place to prevent disastrous natural forest fires — mainly by strategically artificially setting artificial fires — we will start to do large scale interventions on weather systems. At some point, as the technology improves, we might even begin to systematically change the temperature of various regions.
I envision a day when someone might visit a city, breathe in the fresh air, and say “I am so glad they turned on the air conditioning.”