Even though cloud seeding is able to produce snow when the conditions are correct, the proof that it produces rainfall is significantly less convincing.
How It Works
To create snow, aircraft or devices on the ground discharge silver iodide into clouds filled with supercooled water. This results in the formation of ice crystals around the iodide particles, which then fall as snow. The silver iodide crystals look like ice crystals. Seeding for rain in warm weather uses a different procedure and lacks strong proof. For instance, the 2017 Idaho experiment named SNOWIE provided direct evidence of the operation of the process.
The Effect
Scientists warn against the assumption that the Idaho data can be used elsewhere. Snowfall in Idaho does not always increase right after each operation, as Grist reports, while experts are also wondering whether the increase in snow is worth the investment.
Will It Help Fight Drought?
Cloud seeding cannot help in situations where there are no clouds, so it cannot conjure water during a severe drought. It may supplement mountain snowpack, but it does not replace conservation or accurate weather warnings.
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