Community Collaborative Rain, Hail and Snow Network

The Community Collaborative Rain, Hail and Snow Network (CoCoRaHS) is a volunteer-based program in the United States that collects and reports precipitation data, including rain, hail, and snow. Individuals, often weather enthusiasts, set up simple rain gauges in their backyards to measure how much precipitation falls in their area. This data helps local communities, researchers, and meteorologists understand weather patterns, assess drought conditions, and improve weather forecasts. By sharing this information, volunteers contribute to a better understanding of regional climate and weather variability.