SB473

Prohibit weather modification.

Failed·5/23/25

Montana SB473 would prohibit weather modification within the state.

Montana SB473 would prohibit the intentional injection, release, or dispersal of chemicals or substances for weather modification, temperature alteration, or sunlight intensity change. The bill defines "chemicals" as industrial substances and "weather modification and control" as altering atmospheric cloud or precipitation forms. This prohibition applies across Montana, except as specified in other sections of the law.

Included in complete analysis

  • Overview
  • Core Provisions
  • Implementation
  • Impact
  • Legal Framework
  • Critical Issues

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Sponsors

0
1
R
Democratic CaucusRepublican Caucus

Roll Call Votes

45 Yea

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55 Nay

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Calendar

Mar 24, 2025

3:00 PM

House Natural Resources Hearing

Mar 3, 2025

3:00 PM

Senate Natural Resources Hearing

History

May 23, 2025

Senate

(S) Died in Process

Apr 10, 2025

House

(H) Scheduled for 2nd Reading

Apr 10, 2025

House

(H) 2nd Reading Not Concurred