Improving Atmospheric River Forecasts Act

The Improving Atmospheric River Forecasts Act aims to enhance forecasts of atmospheric rivers - narrow bands of moisture that cause heavy rain, snow, and flooding, particularly in the western U.S. - to reduce damage to communities and infrastructure. It authorizes a five-year pilot project (2026-2030) with $15 million annually to improve forecast models for mountainous terrain and atmospheric rivers, requiring coordination with NOAA, academic partners, and the National Weather Service. The bill also establishes a long-term program mandating NOAA to develop new forecast tools, incorporate social science for clearer public communication, and create annual budget plans for research and partnerships. These changes directly affect NOAA’s operations and water management efforts in the western U.S., without altering existing laws or imposing new regulations on the public.