"China really uses cloud-seeding technology and is spraying it over South Korea," says part of a Korean-language X post shared on June 20, 2026.
The post claims that "artificial cloud formations have been confirmed" near the Chinese maritime structures installed in a disputed area of the Yellow Sea, known as the West Sea in South Korea.
The installation of what the Asia Maritime Transparency Initiative described as aquaculture platforms was condemned by South Korean lawmakers in 2025 (archived here and here). The structures were installed in a jointly managed area known as the Provisional Measures Zone (PMZ), which was established through a 2001 bilateral pact (archived link).
A video attached to the post appears to show clips of flooding in South Korea along with graphics and satellite imagery of rain clouds forming in the narrow Yellow Sea and drifting towards the Korean peninsula.
Similar claims about China using cloud seeding to interfere with South Korea's weather systems were also shared elsewhere on X and Threads, as forecasters warned of heavy downpours across the country and that a passing typhoon could disrupt the start of the summer rainy season (archived here and here).
Cloud seeding is the addition of microscopic particles to clouds to trigger precipitation, and has been used for years to induce rain over localised areas (archived link). The technique has been used to combat drought, increase agricultural water supply, and to suppress hail (archived link).
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