CoCoRaHS – Community Collaborative Rain, Hail & Snow Network

CoCoRaHS (pronounced KO-ko-rozz) 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, our 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 affect and impact our lives.Our Web page provides the ability for our observers to see their observations mapped out in “real time”, as well as providing a wealth of information for our data users.

For more information, please click here: Information about CoCoRaHS.

If you would like to sign-up as a volunteer observer and become part of our expanding network, please click here: “Join the CoCoRaHS Network“.

— via CoCoRaHS – Community Collaborative Rain, Hail & Snow Network

4 thoughts on “CoCoRaHS – Community Collaborative Rain, Hail & Snow Network

  1. I’ve been participating for several years and will be happy to answer any questions about the program.


    1. Quite different, actually. For example, check out the wiki pages for the programs.

      WU is primarily for weather reporting. CoCoRaHS is primarily for data collection. CoCoRaHS is much larger though not as international. CWOP (referenced in WU’s wiki page) is similar to CoCoRAHS but much smaller, perhaps overlaps CoCoRaHS’s evapotranspiration program.


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