CoCoRaHS In 50 States & DC

The saying “Rain doesn???t fall the same on all” really proves to be true. CoCoRaHS has expanded across the country at a rapid pace over the past few years and is now in all fifty states.

When you have the chance please tell a friend or neighbor about this exciting grassroots effort to measure precipitation in the backyards of citizens from the Atlantic to the Pacific.

It’s easy to join, takes only five minutes a day and is a fun way to learn about this wonderful natural resource that falls from the sky.?? They are striving to have 30,000-40,000 active observers by the end of 2013.

CoCoRaHS is used by a wide variety of organizations and individuals.?? The National Weather Service, other meteorologists, hydrologists, emergency managers, city utilities (water supply, water conservation, storm water), insurance adjusters, USDA, engineers, mosquito control, ranchers and farmers, outdoor & recreation interests, teachers, students, and neighbors in the community are just some examples of those who visit the CoCoRaHS Web site and use their data.

Community Collaborative Rain, Hail and Snow Network (CoCoRaHS) is a grassroots volunteer network of backyard weather observers of all ages and backgrounds working together to measure and map precipitation (rain, hail and snow) in their local communities.

By using low-cost measurement tools, stressing training and education, and utilizing an interactive Web-site, their aim is to provide the highest quality data for natural resource, education and research applications. The only requirements to join are an enthusiasm for watching and reporting weather conditions and a desire to learn more about how weather can effect and impact our lives.

Their Web page at provides the ability for our observers to see their observations mapped out in “real time”, as well as providing a wealth of information for their data users.

For more information, please click here: Information about CoCoRaHS