Improving Atmospheric River Forecasts Act

S 322 establishes a federal program to improve forecasts of atmospheric rivers - narrow moisture "rivers" in the atmosphere that cause extreme rain, flooding, and snowfall. It directs NOAA to develop better forecasting tools using machine learning, satellite data, and aircraft reconnaissance (November-March), with a focus on the West Coast including Alaska. Key provisions include creating standardized forecast metrics, building a unified forecasting system, and improving communication about atmospheric river impacts to help communities prepare. The bill aims to reduce property damage, economic losses, and risks from both floods and droughts by enhancing forecast accuracy and usability for local officials and residents.