HB2042 is the House companion to SB1278, carrying identical language banning solar radiation management with civil enforcement through the Attorney General. With both chambers having now independently passed their respective versions, the narrowly focused SRM prohibition is closer to enactment than any of Arizona's prior geoengineering proposals.
Vetoed by Gov. Hobbs "Without the science or data to back up its claims"
Arizona HB 2125 is not a geoengineering ban but a comprehensive modernisation of the state's existing cloud seeding regulatory framework, adding dual-agency environmental review, mandatory public meetings, a NOAA-style transparency database, and citizen enforcement through Attorney General petitions.
Failed to clear NREW committee deadline (20 Feb 2026)
Arizona's bill would abolish its existing weather modification permit program and criminalise geoengineering as a felony, with $100,000 in penalties per violation. Notably, the enforcement mechanism relies on a citizen complaint process rather than proactive state monitoring.
Failed to clear Natural Resources committee deadline (20 Feb 2026)
Arizona's SB1278 takes a surgically narrow approach to atmospheric modification, banning only solar radiation management while leaving the state's existing cloud-seeding licensing system entirely untouched—a sharp strategic retreat from the same sponsor's sweeping 2025 geoengineering ban, which included felony charges, $500,000 fines, and electromagnetic radiation investigations.
Arizona's SB 1279 transforms the state's minimal weather modification oversight into a comprehensive dual-agency regulatory system requiring DEQ chemical approval, public meetings, mandatory insurance, an online tracking database modelled after NOAA's, and citizen enforcement through the Attorney General.
You said Although passed by caucus, the bill never received a third reading before the crossover deadline.
Arizona HB 2056 repeals the state's existing weather modification regulatory system and replaces it with an absolute geoengineering ban enforced through a citizen-reporting network, mandatory 2-hour emergency investigations, Class 4 felony charges, and minimum $500,000-per-day civil penalties—the most aggressive enforcement regime among current state weather modification legislation.
Remained in House Natural Resources, Energy & Water and Rules committees.
Arizona SB 1432 prohibits solar radiation management activities while explicitly preserving the state's traditional weather modification regulatory system. This minimalist approach establishes a ban without any enforcement mechanisms, penalties, or investigative authority, making it essentially unenforceable.
Passed by Senate but stuck in House Natural Resources, Energy & Water and Rules committees.