In Alberta in the 1970s, there was a cloud seeding program whose aim was not to produce rain, but rather to reduce hail (which can be very damaging to crops, as well as property). It was viewed as experimental, with researchers doing surveys about how much hail fell. I don’t know whether it worked or not, but I don’t think one can come to any firm conclusion about it on the basis of simple observations such as “clouds are opaque”.
In Alberta in the 1970s, there was a cloud seeding program whose aim was not to produce rain, but rather to reduce hail (which can be very damaging to crops, as well as property). It was viewed as experimental, with researchers doing surveys about how much hail fell. I don’t know whether it worked or not, but I don’t think one can come to any firm conclusion about it on the basis of simple observations such as “clouds are opaque”.
But whether it works or not, it seems it’s still actively done in Alberta: https://www.theglobeandmail.com/canada/alberta/article-how-albertas-hail-suppression-project-helps-manage-severe-weather/