Verdict: False
Claims that the High-frequency Active Auroral Research Program caused devastating floods in Nepal and Tibet are false. HAARP is an Alaska research facility used to study the ionosphere, far above the weather systems that produce rain and storms.
The University of Alaska Fairbanks explains that HAARP's radio frequencies are not absorbed in the troposphere or stratosphere. Because the energy does not interact with the lower atmospheric layers where weather occurs, it cannot create or steer a flood-producing storm.
A documented physical cause
Scientists instead identified a glacial collapse and debris flow as the disaster's physical drivers, according to analysis reviewed by AFP. Recovery reporting documents destroyed homes, missing people and difficult rebuilding—real consequences that do not require an invented cause.
HAARP's antenna field and technical mission look unfamiliar, which conspiracies exploit. Ionospheric research can improve understanding of communications, navigation and space weather; it does not control humidity, glaciers or rivers thousands of miles away.
The evidence a causal claim would need
NOAA explains that real weather-modification practices such as cloud seeding have limited goals and cannot create major storm systems on demand. Conflating those practices with HAARP does not solve the scientific contradiction.
A credible claim would need a plausible mechanism, measurements showing relevant energy reached the disaster area and independent evidence connecting an operation to the flood. Viral posts supplied none.
Limits and what to watch
Researchers can refine the disaster's sequence without giving credibility to a mechanism that contradicts how HAARP waves interact with the atmosphere.
The next development to watch is glacial-hazard assessment, recovery reporting and peer-reviewed analysis.
Sources and further reading
University of Alaska: HAARP FAQ ↗