Appendix: State-Level SRM Legislation
Alabama
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
Arizona
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
Connecticut
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: Cloud seeding permits
Date Introduced/Passed: 2025
Florida
Type: Law
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
Georgia
Type: Resolution
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
Idaho
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI, SRM, cloud seeding
Date Introduced/Passed: 2025
Illinois
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: Cloud seeding
Date Introduced/Passed: 2025
Indiana
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: Weather control
Date Introduced/Passed: 2025
Indiana
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: Weather control
Date Introduced/Passed: 2025
Iowa
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
Iowa
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
Kentucky
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
Kentucky
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
Louisiana
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
Louisiana
Type: Resolution
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
Maine
Type: Bill
Research or Implementation Ban: Research and Implementation Ban
Type of SRM Targeted in Legislation: SAI; weather modification; excessive electromagnetic, radio frequency, or microwave radiation emissions; harmful nuclear, biological, or chemical emissions; other polluting atmospheric activity
Date Introduced/Passed: 2025
Michigan
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2024
Michigan
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
Mississippi
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
Mississippi
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
Missouri
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: Environmental manipulation
Date Introduced/Passed: 2025
Montana
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: All forms of SRM except cloud seeding
Date Introduced/Passed: 2025
Nevada
Type: Law
Research or Implementation Ban: Research Ban
Type of SRM Targeted in Legislation: Cloud seeding
Date Introduced/Passed: 2025
New Hampshire
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI, SRM, cloud seeding
Date Introduced/Passed: 2025
New Jersey
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SRM
Date Introduced/Passed: 2025
New Mexico
Type: Law
Research or Implementation Ban: Research Ban
Type of SRM Targeted in Legislation: Cloud seeding
Date Introduced/Passed: 2024
New York
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
North Dakota
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI, cloud seeding, electromagnetic radio frequency, microwave radiation emissions, or any other atmospheric polluting activity
Date Introduced/Passed: 2025
North Dakota
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: Weather modification
Date Introduced/Passed: 2025
Ohio
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SRM
Date Introduced/Passed: 2025
Oklahoma
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
Pennsylvania
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI, SRM, cloud seeding, weather engineering
Date Introduced/Passed: 2025
Rhode Island
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SRM, cloud seeding, weather modification, or other atmospheric interventions involving the release of pollutants
Date Introduced/Passed: 2025
South Carolina
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI and SRM, with exceptions for approved cloud seeding and crop dusting
Date Introduced/Passed: 2025
South Carolina
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI and SRM, with exceptions for approved cloud seeding and crop dusting
Date Introduced/Passed: 2025
South Carolina
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
South Dakota
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI, SRM, cloud seeding
Date Introduced/Passed: 2024
Tennessee
Type: Law
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2024
Texas
Type: Bill
Research or Implementation Ban: Research and Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
Utah
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
Vermont
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
West Virginia
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
West Virginia
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
Wyoming
Type: Bill
Research or Implementation Ban: Implementation Ban
Type of SRM Targeted in Legislation: SAI
Date Introduced/Passed: 2025
Note: Andrew Noland, PhD candidate at the University of Minnesota, researched and compiled the Appendix. Last updated in October 2025.