GeoLawWatch: Tracking Weather & Climate Legislation

Tracking weather modification, cloud seeding, and geoengineering bills in real time across the US.

Geoengineering Bills by State

2025-2026 Regular Session

Adjourned Session ended May 14, 2026

Governor: Henry McMaster

Statutory Squirrel blog

Bill # Details Effective Status
2025-2026 Regular Session Session Adjourn Thu 14 May 2026
H3083 Air Quality Immediately Sine die
South Carolina's H. 3083 takes a minimalist approach to weather modification prohibition, adding a simple ban on intentional atmospheric emissions for climate purposes without specifying penalties, enforcement mechanisms, or exemptions—leaving implementation entirely to existing air quality regulations. Last update
Tue 14 Jan 2025
  Note: Committee on Agriculture, Natural Resources and Environmental AffairsRemained in
H3915 South Carolina Clean Air Act Immediately Sine die
South Carolina's H. 3915 establishes a mid-tier enforcement approach to weather modification, combining federal-level felony penalties with whistleblower protections for citizens suing the government, while notably omitting the more aggressive airport employee prosecution and bounty provisions found in companion bill H. 4624. Last update
Tue 25 Feb 2025
  Note: Remained in Committee on Judiciary
H4010 South Carolina Clean Air Act Immediately Sine die
South Carolina's H. 4010 represents the most agriculture-friendly version of the state's weather modification bills, explicitly exempting both cloud seeding and crop dusting operations while notably omitting any criminal penalties or enforcement mechanisms for violations—essentially creating a prohibition without teeth. Last update
Thu 13 Feb 2025
  Status: Committee on Judiciary (since 13 Feb 2025)
  Note: Remained in Committee on Judiciary
S0110 Air Quality Immediately Sine die
South Carolina's S. 110 is the Senate companion to the minimalist House approach, creating a bare-bones weather modification prohibition without penalties or exemptions—but its referral to the Medical Affairs Committee rather than environmental or agriculture committees signals a unique legislative focus on public health impacts. Last update
Tue 14 Jan 2025
  Note: Remained in Committee on Medical Affairs
H4624 South Carolina Clean Air Act Immediately Sine die
South Carolina's bill establishes the nation's most aggressive enforcement regime against weather modification activities, featuring life imprisonment for third-time offenders and an unprecedented private citizen lawsuit provision that awards damages without requiring proof of harm—creating a de facto bounty system against stratospheric aerosol injection operations. Last update
Tue 21 Apr 2026
  Note: Remained in Agriculture, Natural Resources and Environmental Affairs committee