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South Dakota Prohibits Weather Modification Activities and Imposes Fines Starting at $100,000

Original title: prohibit weather and climate modification activities and provide a penalty therefor.

Last action · February 10, 2026: Deferred to the 41st legislative daySponsors: Bobbi Andera and 5 others

Introduced
Committee
Floor Vote
Passed
Law

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What This Bill Proposed

South Dakota House Bill 1271 bans releasing chemicals, toxic substances, aluminum, barium, or sulfur dioxide into the atmosphere to modify weather, sunlight, or temperature. The measure creates a monitoring fund, sets civil penalties of at least $100,000 plus $10,000 per day for violations, and requires public and private airports to report aircraft equipped for atmospheric dispersion.

Why it matters

The bill establishes strict civil penalties for atmospheric weather modification and places new quarterly reporting obligations on public and private airport operators regarding aircraft equipped for chemical dispersion.

Background
  • House Bill 1271 was introduced during the 101st Legislative Session of the South Dakota Legislature in 2026 by Representative Andera. context

Who It Would Have Affected

Groups the bill's text would have affected, as described in the record. Being affected is not a position for or against it.

Directly affected

public and private airport operators

Airport operators must report quarterly to the Department of Transportation regarding aircraft equipped for atmospheric dispersion and incorporate new provisions into grant agreements.

Directly affected

Department of Agriculture and Natural Resources

The department administers the monitoring fund, investigates complaints, assesses civil penalties, and establishes reporting forms.

Directly affected

Department of Transportation

The department receives airport reports, forwards them to environmental regulators, and incorporates reporting requirements into airport grant agreements.

Key Facts

You don't have to trust us. Each fact below is taken straight from the official document - click any one to see the exact passage, highlighted in the original.

Frequently Asked Questions

What activities does House Bill 1271 prohibit?
The bill prohibits injecting, releasing, or dispersing chemicals known to cause negative health impacts in toxic amounts, as well as aluminum, barium, specific chaff, strontium, or sulfur dioxide into the atmosphere for the purpose of modifying weather, temperature, sunlight, or the atmosphere.
What are the financial penalties for violating the prohibition?
The department must assess a civil penalty of at least $100,000 for a violation, plus $10,000 per day for each day the violation continues.
Are agricultural crop dusters subject to the airport reporting rules?
No. Aircraft equipped with for use in applying herbicides or pesticides are explicitly exempt from the airport reporting requirement.

What else do you want to know?

News Coverage

No news coverage found yet. Articles are indexed twice daily.

Where This Stands

This bill did not become law - Died at adjournment · in House committee.

Procedural history

3 actions
  1. Feb 10, 2026House
    Deferred to the 41st legislative day
  2. Feb 10, 2026House
    Scheduled for hearing
  3. Feb 4, 2026HouseIntroduced
    First read in House and referred to

Version history

Only one version on file - nothing to compare yet. As later stages (committee substitute, engrossed, enrolled) are captured, the redline appears here.

View official text →

Voting Record

Motion succeededHouse2/10/2026South Dakota LegislatureOfficial roll call ↗

Deferred to the 41st legislative day

Total

13

Yes
7
No
3
Present
0
Not voting
0
Abstain
0
Other positions
3

Lobbying Activity

No state lobbying filings in our records match this bill. Federal lobbying reports (LDA) cover Congress, so they are not listed on state bills.

Full breakdown

Who this bill affects and the strongest case for and against it, written only from the bill’s own text.

Sponsors

Discoveries

1 pattern noticed across the record

Patterns POLISCOPE noticed across the record. These are observations to investigate, not conclusions.

policy shift95% confidence

Creation of State-Level Oversight for Atmospheric Modification

The bill establishes a formal regulatory framework, monitoring fund, and civil penalty structure dedicated explicitly to policing weather and climate modification activities.

Connected Entities

South Dakota Aeronautics Commission, Department of Agriculture and Natural Resources, Department of Transportation
OrganizationSouth Dakota Aeronautics Commission“Promulgates rules to develop reporting forms and grant agreement templates”Map →
OrganizationDepartment of Agriculture and Natural Resources“Administers the weather and climate modification monitoring fund and investigate”Map →
OrganizationDepartment of Transportation“Receives quarterly airport reports and incorporates grant agreement requirements”Map →

Sources

Open source document

sdlegislature.gov

Analysis Score

0–100
  • Significance20
    Lowered because this bill did not pass (its text scored 65)
  • Controversy70
    Intensity of disagreement among stakeholders
  • Entertainment25
    Compellingness for a non-policy-wonk reader
  • Buzz60
    Current news / social attention level

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