HopWRF Project

ALT CoCoRaHS is the Community Collaborative Rain, Hail, & Snow Network, a group of over 20,000 volunteer weather observers nationwide. CoCoRaHS observers measure precipitation (rain, hail, and snow) that falls at their location, and share their data online. Reports from CoCoRaHS observers are used by many organizations at the local, state and national level, including the National Weather Service. By volunteering as an observer you become a citizen scientist, and play an important role in documenting how the weather affects your community. All you need to report precipitation for CoCoRaHS is a standard 4 inch diameter rain gauge (shown in the photos above with links to vendors available on the CoCoRaHS website), and internet access to relay reports via the CoCoRaHS app or website. If you don't have a rain gauge, you can still report snowfall, snow depth, hail, significant weather reports, and condition monitoring updates!