The idea of cloud seeding and weather modification has been around since 1940. There were federally funded programs in the 1960s—one named Project Skywater that ultimately had mixed results. In the 1970s and 1980s, the US government began experimenting on how weather modification could be used as a war tool. But outside of ski resorts like Vail, where the technology is used to help increase snow during snowstorms, interest in cloud seeding largely dropped off. … According to the North American Weather Modification Council, there are currently several projects being run in California, Wyoming, Colorado, Texas, Utah, among other states with a project here or there.