CS/CS/HB 477: Geoengineering and Weather Modification Activities
GENERAL BILL by State Affairs Committee ; Natural Resources & Disasters Subcommittee ; Steele ; Mayfield ; (CO-INTRODUCERS) Benarroch ; Borrero ; Miller ; Nix
Geoengineering and Weather Modification Activities; Repeals, revises, & creates provisions of weather modification law relating to duties of DEP, prohibited activities, civil penalties, reporting & investigation of violations, & funding expenditures.
Effective Date: 7/1/2025
Last Action: 4/30/2025 House - Laid on Table, refer to CS/CS/SB 56
Bill Text: PDF
Last Action: 4/30/2025 House - Laid on Table, refer to CS/CS/SB 56
Bill Text: PDF
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Bill History
Date Chamber Action 2/7/2025 House • Filed
2/19/2025 House • Referred to Natural Resources & Disasters Subcommittee
• Referred to State Affairs Committee
• Now in Natural Resources & Disasters Subcommittee
3/4/2025 House • 1st Reading (Original Filed Version)
3/28/2025 House • Added to Natural Resources & Disasters Subcommittee agenda
4/1/2025 House • Favorable with CS by Natural Resources & Disasters Subcommittee
• Reported out of Natural Resources & Disasters Subcommittee
4/2/2025 House • Laid on Table under Rule 7.18(a)
• CS Filed
• 1st Reading (Committee Substitute 1)
4/3/2025 House • Referred to State Affairs Committee
• Now in State Affairs Committee
4/15/2025 House • PCS added to State Affairs Committee agenda
4/17/2025 House • Favorable with CS by State Affairs Committee
• Reported out of State Affairs Committee
• Laid on Table under Rule 7.18(a)
• CS Filed
• 1st Reading (Committee Substitute 2)
4/18/2025 House • Bill referred to House Calendar
• Added to Second Reading Calendar
4/30/2025 House • Laid on Table, refer to CS/CS/SB 56
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CS/CS/HB 477, Committee Substitute 2 (Current Bill Version) Posted 4/17/2025 at 4:26 PM
Bill Text: PDF Analyses: State Affairs Committee (Post-Meeting) 4/17/2025 (pdf)
Related Bills (1)
Bill Number Subject Filed By Relationship Last Action and Location Track Bills S 56 (er) Geoengineering and Weather Modification Activities Garcia Similar Last Action: 4/30/2025 S Ordered enrolled 
Citations - Statutes (20)
Citation Catchline Location in Bill Location In Bill Help 253.002 Department of Environmental Protection, water management districts, Fish and Wildlife Conservation Commission, and Department of Agriculture and Consumer Services; duties with respect to state lands. Page 6 (pdf) 373.026 General powers and duties of the department. Page 9 (pdf) 373.1501 South Florida Water Management District as local sponsor. Page 9 (pdf) 373.4598 Water storage reservoirs. Page 12 (pdf) 373.470 Everglades restoration. Page 12 (pdf) 403.281 Definitions; weather modification law. Page 3 (pdf) 403.291 Purpose of weather modification law. Page 3 (pdf) 403.301 Artificial weather modification operation; license required. Page 3 (pdf) 403.311 Application for weather modification licensing; fee. Page 3 (pdf) 403.321 Proof of financial responsibility. Page 3 (pdf) 403.331 Issuance of license; suspension or revocation; renewal. Page 3 (pdf) 403.341 Filing and publication of notice of intention to operate; limitation on area and time. Page 3 (pdf) 403.351 Contents of notice of intention. Page 3 (pdf) 403.361 Publication of notice of intention. Page 3 (pdf) 403.371 Proof of publication. Page 3 (pdf) 403.381 Record and reports of operations. Page 3 (pdf) 403.391 Emergency licenses. Page 3 (pdf) 403.401 Suspension or revocation of license. Page 3 (pdf) 403.411 Penalty. Page 1 (pdf) 403.4115 Page 5 (pdf) -
CS/HB 477, Committee Substitute 1 Posted 4/2/2025 at 9:08 AM
Bill Text: PDF Analyses: None Related Bills (1)
Bill Number Subject Filed By Relationship Last Action and Location Track Bills S 56 (c2) Geoengineering and Weather Modification Activities Garcia Compare Last Action: 4/30/2025 S Ordered enrolled
Citations - Statutes (1)
Citation Catchline Location in Bill Location In Bill Help 403.411 Penalty. Page 1 (pdf) -
HB 477, Original Filed Version Posted 2/7/2025 at 12:53 PM
Bill Text: PDF Analyses: Natural Resources & Disasters Subcommittee (Post-Meeting) 4/2/2025 (pdf)
Related Bills (1)
Bill Number Subject Filed By Relationship Last Action and Location Track Bills S 56 (c2) Geoengineering and Weather Modification Activities Garcia Compare Last Action: 4/30/2025 S Ordered enrolled
Committee Amendments (1)
Amendment Sponsor Filed Last Committee Action Format 947411 - Strike All Amendment
Remove everything after the enacting clause and insert:Steele 3/28/2025
5:40 PMAdopted without Objection
4/1/2025PDF Citations - Statutes (20)
Citation Catchline Location in Bill Location In Bill Help 252.44 Emergency mitigation. Page 3 (pdf) 253.002 Department of Environmental Protection, water management districts, Fish and Wildlife Conservation Commission, and Department of Agriculture and Consumer Services; duties with respect to state lands. Page 4 (pdf) 373.026 General powers and duties of the department. Page 6 (pdf) 373.1501 South Florida Water Management District as local sponsor. Page 7 (pdf) 373.4598 Water storage reservoirs. Page 9 (pdf) 373.470 Everglades restoration. Page 9 (pdf) 403.281 Definitions; weather modification law. Page 2 (pdf) 403.291 Purpose of weather modification law. Page 2 (pdf) 403.301 Artificial weather modification operation; license required. Page 2 (pdf) 403.311 Application for weather modification licensing; fee. Page 2 (pdf) 403.321 Proof of financial responsibility. Page 2 (pdf) 403.331 Issuance of license; suspension or revocation; renewal. Page 2 (pdf) 403.341 Filing and publication of notice of intention to operate; limitation on area and time. Page 2 (pdf) 403.351 Contents of notice of intention. Page 2 (pdf) 403.361 Publication of notice of intention. Page 2 (pdf) 403.371 Proof of publication. Page 2 (pdf) 403.381 Record and reports of operations. Page 2 (pdf) 403.391 Emergency licenses. Page 2 (pdf) 403.401 Suspension or revocation of license. Page 2 (pdf) 403.411 Penalty. Page 2 (pdf)