In 2018 an Iranian general suggested Israel was “stealing” Iran’s clouds to explain droughts, a claim he later walked back after Iran’s meteorological organization contradicted him. That theory has resurfaced amid the Iran war, this time spreading widely on social media and extending beyond an individual’s remark.
Viral posts—with millions of views—claim a so-called “weather war,” pointing to dams filling and highways covered in snow as evidence of climate interference. They focus on cloud seeding and the UAE’s Research Program for Rain Enhancement Science (UAEREP), alleging that Iran attacked cloud-seeding infrastructure and that subsequent temperature drops and heavy precipitation in Iran were the result.
The core claim—that bombing a UAE cloud-seeding facility caused a sudden 5°C temperature shift in Tehran and heavy rain and snow across Iran—is false. There is no evidence the UAEREP center was attacked, and atmospheric scientists say the posts misrepresent how cloud seeding works and its effects.
Where the claim originated
A now-deleted post from the Iranian embassy in Afghanistan appears to have spurred the narrative; a major Iranian newspaper reported the embassy wrote that destroying the UAE’s “secret climate change center” changed regional weather patterns. No archived version of the embassy post is available. No wire services or reputable outlets reported any attack on the UAEREP, and UAEREP’s own public channels continued posting after the alleged incident, celebrating events and conferences.
Weather context and misidentified footage
Forecasters warned of moderate to locally heavy rain and thunderstorms—including flash-flood risk—in northwestern and western Iran over the relevant dates. Videos showing overflowing dams and high rivers match those forecasts. The widely shared snow video does not show Tehran; it shows the Imam Reza shrine in Mashhad, a city at about 1,000 meters elevation where April snow is not unusual. Periods of intense precipitation in drought-stricken Iran are also consistent with climate change trends, which are increasing the variability and severity of droughts and extreme rainfall events.
What UAEREP is
The UAE’s Research Program for Rain Enhancement Science is an established program (active since 1990) that funds research and runs pilot cloud-seeding operations to address water scarcity. It is not a secret facility. UAEREP funds international research and supports operational seeding missions; it also publicly posts updates about activities.
How cloud seeding works
Cloud seeding is a decades-old technique intended to encourage precipitation from clouds already close to producing rain or snow. Operators introduce particles such as silver iodide or salt (sodium chloride) into clouds from aircraft or ground-based generators to promote droplet or ice formation, effectively nudging marginally precipitating clouds over the threshold.
Limits of cloud seeding and scale
Cloud seeding does not create clouds from clear skies. Scientists emphasize it can only enhance precipitation when appropriate cloud conditions already exist. Measurable effects are typically small and localized—literature suggests increases in precipitation on the order of roughly 5–20% in targeted areas under favorable conditions. Researchers quoted by fact-checkers describe current cloud-seeding capability as “very small scale,” insufficient to alter large-scale atmospheric circulation or shift rainfall patterns over entire regions or across national borders.
Expert assessments
Atmospheric physicists note the mismatch between the scale of claimed impacts (widespread temperature drops and heavy regional rainfall) and what seeding operations can achieve. Even if seeding produces modest local increases in precipitation, it cannot reorganize weather systems or cause rapid temperature changes over hundreds of kilometers.
Conclusion
The claim that an attack on a UAE cloud-seeding facility caused a sudden temperature drop and widespread rain or snow in Iran is unsupported. There is no verifiable evidence of such an attack, the snowfall video was misattributed, and cloud seeding cannot produce the large-scale weather shifts described in viral posts. Cloud seeding can modestly enhance precipitation under the right conditions, but only at small, localized scales—not at the regional level implied by the conspiracy.