Creates a National Mesonet Program at NOAA to acquire, integrate, and use dense, diverse environmental observations (prioritizing commercial, academic, and non‑Federal data) to improve forecasts and warnings for atmospheric, drought, fire, water, and road‑weather events. The program must leverage existing networks, focus on soil‑moisture and boundary‑layer data for better numerical weather prediction and subseasonal-to-seasonal forecasts, support the National Weather Service’s operational forecasting goals (including a 30‑minute severe‑weather warning capability), and establish technical, administrative, and data‑quality standards and partnerships to integrate non‑Federal monitoring systems into operational use.