I have not heard of exceptional changes in regional patterns. Certainly not in my region, for as long as I have been alive (73 years). California has been suffering drought, but California ALWAYS suffers drought to one degree or another. It is a characteristically arid region. Nothing has changed about the occurrence of hurricanes or tornadoes. We influence local weather conditions through the "heat island" syndrome, resulting from forest clearing and building and road construction. The Dust Bowl conditions of the midwest came and went well before the "climate change" was supposed to be happening.

So, I don't give much credence to "weather modification," unless you are talking about specific opportunities in a day or a week to attempt cloud seeding.

And, in general, the whole "climate change" theme is a complete fraud, with mendicant pseudo-scientists finding justifications for concluding a disaster is impending (and please send me more grant money). Lately, a major study has found that carbon dioxide concentration level follows temperature trends; it doesn't set them. Since a cause cannot be preceded by the effect, this blows the whole CO2 demonization program.