GeoLawWatch: Tracking Weather & Climate Legislation

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

Geoengineering Bills by State

Bill # Details Effective Status
2023-2024 Regular Session
HF4687 Harmful atmospheric activity prohibited, and penalties provided. Died in committee
Minnesota's HF 4687 goes far beyond typical weather modification bans by establishing a felony offence with $500,000 fines, mandating an elaborate citizen reporting system with 2-hour emergency response requirements, setting specific limits on electromagnetic radiation, and asserting Tenth Amendment authority to override federal approvals for atmospheric activities. The bill uniquely requires officials to actively encourage public monitoring and grants immediate cease-and-desist powers with National Guard enforcement authority. Last update
Thu 11 Apr 2024
  Note: Remained in Environment and Natural Resources Finance and Policy committee
SF4630 Certain harmful atmospheric activity prohibition Died in committee
Minnesota's SF 4630 goes far beyond typical weather modification bans by establishing a felony offence with $500,000 fines, mandating an elaborate citizen reporting system with 2-hour emergency response requirements, setting specific limits on electromagnetic radiation, and asserting Tenth Amendment authority to override federal approvals for atmospheric activities. The bill uniquely requires officials to actively encourage public monitoring and grants immediate cease-and-desist powers with National Guard enforcement authority. Last update
Thu 11 Apr 2024
  Note: Remained in Environment, Climate, and Legacy committee
2025-2026 Regular Session Session start Tue 17 Feb 2026
HF2310 Prior law prohibiting weather modification reenacted, and criminal penalties provided. 1 Aug 2026 Introduced
Minnesota’s HF 2310 prohibits all weather modification activities and asserts the state’s sovereign claim over its airspace, treating each day of violation as a separate misdemeanor offense. Notably described as “reenacting prior law,” this suggests Minnesota is reviving a previously repealed or expired weather modification ban. Last update
Thu 13 Mar 2025
  Status: Held in Env. and Nat.Resources Finance and Policy committee since Mar 2025
SF2462 Prior law prohibiting weather modification reenactment 1 Aug 2026 Introduced
Minnesota's SF 2462 prohibits all weather modification activities and asserts the state's sovereign claim over its airspace, treating each day of violation as a separate misdemeanour offence. Notably described as "reenacting prior law," this suggests Minnesota is reviving a previously repealed or expired weather modification ban. Last update
Thu 13 Mar 2025
  Status: Held in Environment, Climate, and Legacy since Mar 2025