S. 2203Senate118th Congress (2023-2025)In Committee

ARROW Act

Introduced June 22, 2023

AI-Generated Summary

Updated January 20, 2026 at 9:21 AM UTC

The ARROW Act directs the Air Force Reserve’s 53rd Weather Reconnaissance Squadron and the National Oceanic and Atmospheric Administration to conduct winter‑season airborne reconnaissance of atmospheric rivers off the West Coast each year from November 1 to March 31. The goal is to improve forecasts, warnings, and water‑management decisions for the western United States.

Key Provisions

  • Require annual atmospheric‑river reconnaissance missions over the West Coast during the winter season (Nov 1‑Mar 31), using aircraft, personnel, and equipment from the 53rd Weather Reconnaissance Squadron and NOAA, subject to appropriations.
  • Mandate data collection in ocean regions lacking conventional observations, including dropsonde and buoy drops, to enhance forecasts of storm landfall, flood risk, and support civil and military decision‑makers.
  • Require the squadron to work with NOAA on research and operational partnerships to improve reconnaissance methods and expand capabilities over time.
  • Require the Secretaries of the Air Force and Commerce to submit reports within 90 days of enactment detailing the resources needed to sustain the program and related weather‑reconnaissance plans through Dec 31, 2035.

Legislative Activity

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1 earlier action
SenateIntro Referral Latest Action

Read twice and referred to the Committee on Armed Services. (Sponsor introductory remarks on measure: CR S2235-2236)

June 22, 2023

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SenateIntro Referral

Introduced in Senate

June 22, 2023

SenateIntro Referral

Read twice and referred to the Committee on Armed Services. (Sponsor introductory remarks on measure: CR S2235-2236)

June 22, 2023

Floor Debate

5 members

What members said about S. 2203 on the floor

1 Republican4 Democrats
Dianne Feinstein
Sen. Dianne FeinsteinD-CA · Jun 22, 2023

Madam President, I rise to speak in support of the Canal Conveyance Capacity Restoration Act, which I introduced today. Representative Jim Costa has introduced companion legislation in the House of…

Alex Padilla
Sen. Alex PadillaD-CA · Jun 22, 2023

Madam President, I rise to introduce the Smoke Exposure Crop Insurance Act of 2023. This legislation will make Federal crop insurance work better for wine grapes impacted by wildfire smoke exposure.…

Susan M. Collins
Sen. Susan M. CollinsR-ME · Jun 22, 2023

Madam President, I rise today to introduce the Clean Cooking Support Act. I am pleased to be joined in this effort by my friend and colleague Senator Durbin. Our bill aims to address a serious global…

Ron Wyden
Sen. Ron WydenD-OR · Jun 22, 2023

Madam President, one topic there is much agreement on is the benefits of work, and our laws should support those who want to work. The bill I am introducing today will change Social Security so that…

Jack Reed
Sen. Jack ReedD-RI · Jun 22, 2023

Madam President, I believe that Americans are ready and willing to answer the call to serve, to come together and meet the challenges that we face at the local, national, and international level. We…

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Alex Padilla
Sen. Alex PadillaD-CA · Jun 22, 2023

Madam President, I rise to introduce the Atmospheric Rivers Reconissance, Observation and Warning Act or ARROW Act. This legislation will support critical atmospheric river reconnaissance missions to…

Bill Text

Latest available legislative text

Reading Mode
Latest
Introduced in SenateIssued June 22, 2023

II

118th CONGRESS

1st Session

S. 2203

IN THE SENATE OF THE UNITED STATES

June 22, 2023

Mr. Padilla introduced the following bill; which was read twice and referred to the Committee on Armed Services

A BILL

To require the conduct of winter season reconnaissance of atmospheric rivers on the West Coast of the United States, and for other purposes.

1.

Short title

This Act may be cited as the Atmospheric Rivers Reconnaissance, Observation, and Warning Act or the ARROW Act.

2.

Conduct of winter season reconnaissance of atmospheric rivers on the West Coast of the United States

(a)

Findings

Congress finds the following:

(1)

Every year, storms threaten lives and property and cause significant disruptions to travel and commerce.

(2)

During the cool season from October through April, the western United States and other regions around the United States are significantly impacted by atmospheric rivers.

(3)

For key regions across the western United States, 70 to 90 percent of days on which the National Weather Service issued either watches, warnings, or advisories for any hazard type were associated with land-falling atmospheric rivers.

(4)

Atmospheric rivers are relatively long, narrow regions in the atmosphere, below 10,000 feet, that behave like rivers of water vapor pushed along by strong winds. Outside the tropics, atmospheric rivers are responsible for more than 90 percent of the horizontal movement of water vapor. Atmospheric rivers shift locations following large-scale weather patterns, carrying an amount of water vapor on average equivalent to roughly 25 times the average flow of water at the mouth of the Mississippi River.

(5)

Precipitation and flooding in the western United States from high-impact storms are largely controlled by characteristics of land-falling atmospheric rivers, accounting for up to 50 percent of annual precipitation and more than 90 percent of major flood events.

(6)

Conducting atmospheric river reconnaissance during the winter season in the United States significantly enhances storm observations and improves forecasts of storm landfall and intensity.

(7)

The National Winter Season Operations Plan, the goal of which is to improve the accuracy and timeliness of severe winter season storm forecasting and warning services provided by the National Oceanic and Atmospheric Administration, the Air Force, and the Navy, coordinates Federal efforts to provide enhanced weather observations of extreme winter season storms that impact the United States and calls for atmospheric river reconnaissance to be conducted annually off the West Coast of the United States.

(8)

The National Winter Season Operations Plan coordinates requirements for winter season reconnaissance observations provided by the 53rd Weather Reconnaissance Squadron of the Air Force Reserve Command and the Aircraft Operations Center of the National Oceanic and Atmospheric Administration.

(9)

The 2021 report of the Science Advisory Board of the National Oceanic and Atmospheric Administration entitled, Priorities for Weather Research recommended that the Federal Government, Leverage and expand atmospheric river (AR) observations to improve flood and drought prediction and to enable forecast-informed reservoir operations. Water and emergency managers often cope with too much or too little water and require better information on storms that produce extreme precipitation. However, precipitation prediction skill has not improved substantially in the last 20 years. The multi-agency, OSTP-led Earth System Prediction Roadmap (2020) identified expanded research, observations and communication needed to better anticipate and mitigate water cycle extremes and their cascading impacts, including atmospheric river type storms..

(b)

Conduct of reconnaissance

(1)

In general

Subject to the availability of appropriations, the 53rd Weather Reconnaissance Squadron of the Air Force Reserve Command and the National Oceanic and Atmospheric Administration shall provide aircraft, personnel, and equipment necessary to meet the mission requirements for winter season atmospheric river reconnaissance on the West Coast of the United States annually from November 1 through March 31.

(2)

Activities

In carrying out paragraph (1), the 53rd Weather Reconnaissance Squadron of the Air Force Reserve Command, in consultation with the Administrator of the National Oceanic and Atmospheric Administration, shall—

(A)

improve the accuracy and timeliness of atmospheric river forecasts and warning services on the West Coast of the United States;

(B)

collect data in sensitive oceanic regions where conventional, upper-air observations are lacking and satellites are unable to effectively resolve the position and vertical structure of an atmospheric river and of other nearby essential atmospheric structures offshore;

(C)

support water management decisions and flood forecasting through the execution of targeted airborne dropsonde and buoy observations over the eastern, central, and western north Pacific Ocean to improve forecasts of the landfall and impacts of atmospheric rivers for civil authorities and military decision makers;

(D)

participate in the research and operations partnership that guides flight planning and uses research methods to improve and expand the capabilities and effectiveness of atmospheric river reconnaissance over time; and

(E)

undertake such other additional activities as the 53rd Weather Reconnaissance Squadron considers appropriate to further the atmospheric river reconnaissance mission.

(c)

Reports

(1)

Air Force

Not later than 90 days after the date of the enactment of this Act, the Secretary of the Air Force, in consultation with the Administrator of the National Oceanic and Atmospheric Administration, shall submit to the Committee on Armed Services of the Senate and the Committee on Armed Services of the House of Representatives a comprehensive report on the resources necessary for the 53rd Weather Reconnaissance Squadron of the Air Force Reserve Command to continue to support, through December 31, 2035—

(A)

the National Hurricane Operations Plan;

(B)

the National Winter Season Operations Plan; and

(C)

any other operational requirements relating to weather reconnaissance, to include annual support from November 1 through March 31 for atmospheric river reconnaissance on the West Coast of the United States.

(2)

Commerce

Not later than 90 days after the date of the enactment of this Act, the Secretary of Commerce shall submit to the Committee on Commerce, Science, and Transportation of the Senate and the Committee on Science, Space, and Technology of the House of Representatives a comprehensive report on the resources necessary for the National Oceanic and Atmospheric Administration to continue to support, through December 31, 2035—

(A)

the National Hurricane Operations Plan;

(B)

the National Winter Season Operations Plan; and

(C)

any other operational requirements relating to weather reconnaissance, to include annual support from November 1 through March 31 for atmospheric river reconnaissance on the West Coast of the United States.