SB 599

  • California Senate Bill
  • 2025-2026 Regular Session
  • Introduced in Senate Feb 20, 2025
  • Passed Senate May 29, 2025
  • Assembly
  • Governor

Atmospheric rivers: research: forecasting methods: experimental tools.

Abstract

Existing law establishes the Atmospheric Rivers Research and Forecast Improvement Program: Enabling Climate Adaptation Through Forecast-Informed Reservoir Operations and Hazard Resiliency (AR/FIRO) Program in the Department of Water Resources. Existing law requires the department to operate reservoirs in a manner that improves flood protection, and to reoperate flood control and water storage facilities to capture water generated by atmospheric rivers. Existing law requires the department to research, develop, and implement new observations, prediction models, novel forecasting methods, and tailored decision support systems to improve predictions of atmospheric rivers and their impacts on water supply, flooding, post-wildfire debris flows, and environmental conditions. This bill would, for novel forecasting methods researched, developed, and implemented by the department, require the department to include the use of experimental tools that produce seasonal and subseasonal atmospheric river forecasts, as defined.

Bill Sponsors (1)

Votes


Actions


Sep 10, 2025

Assembly

Ordered to inactive file on request of Assembly Member Aguiar-Curry.

Sep 02, 2025

Assembly

Read second time. Ordered to third reading.

Aug 29, 2025

Assembly

From committee: Do pass. (Ayes 15. Noes 0.) (August 29).

Jul 16, 2025

Assembly

July 16 set for first hearing. Placed on APPR. suspense file.

Jul 01, 2025

Assembly

From committee: Do pass and re-refer to Com. on APPR. with recommendation: To consent calendar. (Ayes 12. Noes 0.) (July 1). Re-referred to Com. on APPR.

  • Committee-Passage
  • Committee-Passage-Favorable
  • Referral-Committee
Com. on APPR.

Jun 05, 2025

Assembly

Referred to Com. on W. P., & W.

  • Referral-Committee
Com. on W. P., & W.

May 29, 2025

Senate

Read third time. Passed. (Ayes 38. Noes 0. Page 1328.) Ordered to the Assembly.

Assembly

In Assembly. Read first time. Held at Desk.

May 27, 2025

Senate

Ordered to special consent calendar.

May 23, 2025

Senate

From committee: Do pass. (Ayes 6. Noes 0. Page 1206.) (May 23).

Senate

Read second time. Ordered to third reading.

May 16, 2025

Senate

Set for hearing May 23.

May 05, 2025

Senate

May 5 hearing: Placed on APPR. suspense file.

Apr 29, 2025

Senate

Set for hearing May 5.

Apr 24, 2025

Senate

Read second time and amended. Re-referred to Com. on APPR.

  • Amendment-Passage
  • Reading-1
  • Reading-2
  • Referral-Committee
Com. on APPR.

Apr 23, 2025

Senate

From committee: Do pass as amended and re-refer to Com. on APPR. with recommendation: To consent calendar. (Ayes 6. Noes 0. Page 839.) (April 22).

Apr 04, 2025

Senate

Set for hearing April 22.

Apr 02, 2025

Senate

Re-referred to Com. on N.R. & W.

  • Referral-Committee
Com. on N.R. & W.

Mar 24, 2025

Senate

From committee with author's amendments. Read second time and amended. Re-referred to Com. on RLS.

  • Amendment-Passage
  • Committee-Passage
  • Reading-1
  • Reading-2
  • Referral-Committee
Com. on RLS.

Mar 05, 2025

Senate

Referred to Com. on RLS.

  • Referral-Committee
Com. on RLS.

Feb 21, 2025

Senate

From printer. May be acted upon on or after March 23.

Feb 20, 2025

Senate

Introduced. Read first time. To Com. on RLS. for assignment. To print.

Bill Text

Bill Text Versions Format
SB599 HTML
02/20/25 - Introduced PDF
03/24/25 - Amended Senate PDF
04/24/25 - Amended Senate PDF

Related Documents

Document Format
04/18/25- Senate Natural Resources and Water PDF
05/02/25- Senate Appropriations PDF
05/26/25- Sen. Floor Analyses PDF
06/27/25- Assembly Water, Parks and Wildlife PDF
07/14/25- Assembly Appropriations PDF
09/02/25- ASSEMBLY FLOOR ANALYSIS PDF

Sources

Data on Open States is updated periodically throughout the day from the official website of the California State Legislature.

If you notice any inconsistencies with these official sources, feel free to file an issue.