Waters and water rights; repealing the Oklahoma Weather Modification Act; effective date.

This bill does not add new rules. Instead, it repeals the entire Oklahoma Weather Modification Act (82 O.S. 2011, Sections 1087.21–1087.33), effective November 1, 2015. As of that date, the act ceased to be in effect, and its provisions no longer applied.

• The state's regulatory framework for weather modification activities
• Any licensing or permit requirements that existed under the prior act
• Oversight mechanisms for cloud seeding and related activities
• Any penalties or enforcement provisions contained in the repealed sections

Starting November 1, 2015, Oklahoma no longer had any state law about weather modification, so from that date forward, there has been no legal framework for these activities.

HB 1420 moved through the Oklahoma legislature at an unusual pace and with minimal opposition. Introduced on February 2, 2015, by Representative Murphey, the bill was referred to the Environmental Law Committee, which reported it favorably with a committee substitute on February 25. The House passed it overwhelmingly on March 11 (79-3), and after engrossmen,t it moved to the Senate. The Senate Energy Committee issued a Do Pass recommendation on April 1, and the full Senate approved it on April 14 with only one dissenting vote (43-1). Governor Mary Fallin signed the bill on April 21, 2015, with an effective date of November 1, 2015.

The lopsided votes in both chambers (79-3 in the House, 43-1 in the Senate) suggest a broad bipartisan consensus that the Weather Modification Act was unnecessary or outdated. The committee substitute noted in the history indicates some refinement occurred during markup, though the final enrolled bill is a straightforward repeal without amendments or exceptions. The entire process took less than three months from introduction to gubernatorial signature.