Welcome to CoCoRaHS!   "Volunteers working together to measure precipitation across the nations."

Reports received today 5/22/2018 as of 2:18 AM EDT
Daily Multi-day SigWx Hail Condition ET
6 0 0 0 0 1

Canadian Home Page Delaware Maine Maryland New Jersey Connecticut New Hampshire Vermont New Hampshire Connecticut Hawaii West Virginia Vermont Arkansas Massachusetts Ohio Idaho California Mississippi Michigan Utah Washington North Dakota Georgia Rhode Island South Carolina New Jersey Louisiana Oregon Kentucky Alabama Florida New York North Carolina Iowa South Dakota Tennessee Wisconsin Nevada Alaska Montana Illinois Missouri Indiana District of Columbia Maryland Virginia Pennsylvania Texas New Mexico Nebraska Kansas Colorado Wyoming Oklahoma Minnesota Arizona Puerto Rico Virgin Islands The Bahamas



The saying "Rain doesn’t fall the same on all" really proves to be true. How often have you seen it rain in your neighborhood and a few blocks away not a drop has fallen.

CoCoRaHS, the largest provider of daily precipitation observations in the United States has been measuring precipitation in the Canadian Provinces, the Commonwealth of Puerto Rico and the U.S. Virgin Islands for the past several years.  Now CoCoRaHS has observers throughout the family islands of the Bahamas! Join CoCoRaHS and help us measure rainfall whether it be on Andros, Exuma, Abaco or right in downtown Nassau.  Click here to learn more about CoCoRaHS Bahamas.

Please take a moment to tell a friend or neighbor about this exciting grassroots effort of citizens measuring precipitation right in their own backyards.  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.  Your observations continue to give scientists an ever clearer picture of where and how much precipitation falls throughout our communities.

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".

Complimentary training is provided to help you become an effective weather observer.  Please check out your state page above (by clicking on your state) for a list of current training sessions in your local area.  If none are taking place at the current time, watch our "Training Slide Shows" and read our on-line training information.

The views and opinions expressed by CoCoRaHS's diverse group of volunteers may not necessarily reflect those held by the CoCoRaHS organization, its collaborators or its sponsors.

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Click here to sign-up to become a weather observer with the CoCoRaHS Network


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