The bill establishes a national prohibition on weather modification in the United States and its territories. It makes knowingly conducting weather modification a crime with criminal and civil penalties, and it creates a public reporting system to flag suspected violations, with EPA leading investigations in coordination with FAA and NOAA.
It also repeals existing federal statutes, regulations, and orders that authorize weather modification, and it defines key terms like weather modification and atmosphere, setting a 90-day post-enactment effective date.
At a Glance
What It Does
Prohibits weather modification in the United States and its territories and imposes criminal penalties up to $100,000 per violation and up to 5 years’ imprisonment, plus civil penalties up to $10,000 per violation. It repeals existing authorities and creates an interagency reporting and enforcement framework.
Who It Affects
Anyone who undertakes weather modification within U.S. jurisdiction, along with entities engaged in reporting, investigation, or enforcement—specifically EPA, FAA, NOAA, and related Federal agencies coordinated by the Administor of EPA.
Why It Matters
Establishes a single, nationwide standard to prevent atmospheric interventions, clarifies enforcement pathways, and sets up a public reporting mechanism to deter, detect, and respond to potential weather-modification activities.
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What This Bill Actually Does
The Clear Skies Act bars any person from knowingly conducting weather modification in the United States, including its territories. The prohibition is triggered under a broad set of circumstances—such as actions that travel in interstate or foreign commerce, use interstate communications, or occur within federal jurisdictions—making violations prosecutable criminally and civilly.
Penalties include fines up to $100,000 per violation and up to five years in prison, with additional civil penalties up to $10,000 per violation. Repeat offenses are counted separately, reinforcing a deterrent effect across multiple incidents.
To support enforcement, the Act requires a public reporting system established by the EPA in coordination with the FAA and NOAA. Reports can be submitted by telephone, email, mail, or an online portal, and all collected reports must be publicly published on the EPA’s website.
Investigations are led by the EPA and may involve coordination with other federal agencies to verify the activities described in reports. If a violation is suspected, the EPA refers the matter to the Attorney General for potential further action.The Clear Skies Act also repeals federal statutes, regulations, and executive orders that authorize or require weather modification, including any licensing or permitting requirements.
Definitions cover the atmosphere and weather modification itself, explicitly including geoengineering, cloud seeding, solar radiation management, and aerosol releases. The Act takes effect 90 days after enactment, creating a clear and immediate shift in how weather-related interventions are regulated at the federal level.
The Five Things You Need to Know
The bill prohibits weather modification in the U.S. and its territories under a broad set of circumstances, with criminal and civil penalties for violations.
A public reporting system, run by the EPA with FAA and NOAA involvement, must collect and publish suspected-violation reports.
EPA leads investigations into suspected violations and coordinates with other agencies to verify activity, with DOJ handling referrals for enforcement.
All existing federal authorities—statutes, regulations, and executive orders—authorizing weather modification are repealed or nullified.
The Act becomes effective 90 days after enactment.
Section-by-Section Breakdown
Every bill we cover gets an analysis of its key sections.
Prohibition of weather modification
The core prohibition makes knowingly conducting weather modification in the United States (and its territories) a violation, with penalties laid out in the statute. The prohibitions are structured around a defined set of circumstances—such as interstate commerce involvement or use of interstate channels—under which conduct constitutes a violation. This section also sets the stage for the severity of penalties, establishing a deterrent through criminal and civil consequences.
Penalties
Penalties are split into criminal and civil tracks. Criminal penalties include fines up to $100,000 per violation and imprisonment up to five years, or both. Civil penalties can reach up to $10,000 per violation and can be stacked with other penalties as allowed by law. Each instance of prohibited activity qualifies as a separate violation, which amplifies accountability for repeated conduct.
Reporting and investigation
A public reporting system must be established by the EPA, in coordination with the FAA and NOAA, to collect reports of suspected weather-modification activity. Reports may be submitted by telephone, email, mail, or an online portal, and all reports are to be published publicly on the EPA’s website. The EPA then investigates suspected violations and coordinates with other federal agencies as needed to verify the activity described in the reports. If a violation is determined to have occurred, the EPA refers the matter to the Attorney General for action.
Repeal of existing authorities
All federal statutes, regulations, or executive orders authorizing or requiring weather modification—including licensing or permitting regimes—are repealed or rendered without force. This creates a clean baseline that precludes ongoing or future weather-modification authorizations under prior authorities.
Definitions
Key terms are defined to operationalize the prohibition. The atmosphere is the Earth’s gaseous envelope, including airspace under U.S. jurisdiction. Weather modification is defined as injecting, releasing, emitting, or dispersing a chemical or substance—or using an apparatus—to produce artificial changes in atmospheric composition, behavior, or climate, including examples like geoengineering, cloud seeding, solar radiation management, or aerosol releases intended to influence temperature or sunlight.
Effective date
The Act takes effect 90 days after enactment, establishing a concrete timeline for the transition from existing authorities to the new regime.
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Explore Environment in Codify Search →Who Benefits and Who Bears the Cost
Every bill creates winners and losers. Here's who stands to gain and who bears the cost.
Who Benefits
- The general public in the United States gains protection from unregulated atmospheric interventions that could alter weather, climate, or safety.
- The EPA, FAA, and NOAA gain clear enforcement and coordination authority to monitor and deter prohibited activities.
- Local and state governments benefit from a uniform national standard that supports emergency planning and infrastructure resilience.
- Aviation and transportation sectors benefit from greater predictability in airspace and weather-related operations due to the prohibition of unregulated weather-modification.
Who Bears the Cost
- Individuals or organizations that undertake weather modification risk criminal and civil penalties, including fines and possible imprisonment.
- Entities required to comply with reporting obligations and potential investigations, which impose administrative and compliance costs.
- Federal agencies (EPA, FAA, NOAA) incur administrative costs to operate the reporting system, investigations, and interagency coordination.
Key Issues
The Core Tension
The central dilemma is balancing a strong preventive prohibition against atmospheric interventions with the potential negative impact on legitimate research and innovation, all while ensuring enforceable, risk-based oversight without stifling beneficial science.
The bill raises important tensions around whether a total prohibition could chill legitimate weather science and international collaborations that are conducted transparently and safely. Broad definitions and aggressive penalties may deter not only illicit activity but also research, data collection, and shared meteorological studies that involve atmospheric manipulation in controlled, compliant contexts.
Enforcement complexity increases when activities cross interstate or international boundaries, requiring robust interagency cooperation and clear jurisdictional boundaries. A key practical question is whether the reporting system could be gamed or overwhelmed, and how due-process protections apply to investigations that could impact researchers, contractors, or private entities.
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