Weather Observers of all ages are needed to study weather in your backyard. We need volunteers to provide data in order to study these conditions.
CoCoRaHS observers are urgently needed in all areas.
It only takes a few minutes each morning.
Sign up today, take training online, then purchase a rain gauge (specific model needed for CoCoRaHS).
Learn more and sign up today at ...
Upcoming Training Sessions:
None Currently Scheduled. Take online training course at www.cocorahs.org
If you would like to host a training session in your area, drop us an email.
Rain gauges can be purchased online at www.weatheryourway.com
Do you want to see what CoCoRaHS is all about...watch these videos or read on!
The National Weather Service makes no claim as to the accuracy of the video, nor is linking to this video an endorsement of any of the parties portrayed, the producers, actors or the video provider. Many links within our web site are to sites outside of the 'noaa.gov' domain, and therefore require a 'jump page' indicating that you are going to a link outside of this NWS Web presentation. A window will open up with the 'jump page'. Do not be alarmed, Most modern browsers will redirect to the correct link within 5 seconds, or if you choose, you can click on the link provided within the 'jump page' to view the page immediately. To return to the NWS Central Region, simply use the back button on your browser. We thank you for your cooperation with this NWS Web Policy. The NWS Central Region provides a link to this site because it may contain related information of interest to you. This link does not constitute an endorsement by the NWS of any information, products or services on this site.
What is CoCoRaHS?
CoCoRaHS is an acronym for Community Collaborative Rain, Hail, and Snow Network. CoCoRaHS is a non-profit community based network of volunteers of all ages and backgrounds working together to measure precipitation. The network originated at Colorado State University in 1998 and has expanded to thousands of observers in over half of the United States. The NWS Northern Indiana office is helping to expand the CoCoRaHS network across Northern Indiana, Southern Lower Michigan and Northwest Ohio.
Who can participate?
This is a community project. Everyone can help. The only requirements are an enthusiasm for watching and reporting weather conditions, a desire to learn more about how weather can affect our lives, a computer and internet connection to report your data, and an official 4 inch diameter rain gauge like the one pictured below. The ultimate goal of the program is to have one observer per square mile in urban areas and one observer every 36 square miles in rural areas. All observations from around the country can be viewed on the CoCoRaHS website and the data may be used by local media, engineers, insurance companies, emergency managers, and many others.
How does one join and become an observer?
Visit the CoCoRaHS home page and fill out an application. All new observers must complete brief training, either through a live session; a walk-in training session with a county coordinator; or complete the on-line training at cocorahs.org. Please see the Indiana , Michigan , or Ohio page on the CoCoRaHs site for more information.
CoCoRaHS in Indiana is made possible by: The Indiana State Climate Office at Purdue University and the National Weather Service. CoCoRaHS in Michigan is a joint effort by the Michigan State Climate Office and the National Weather Service. CoCoRaHS in Ohio is made possible by the Ohio State Climate Office, Ohio DNR, and the National Weather Service.
Where can I learn of new training dates in my area?
The NWS Northern Indiana will post CoCoRaHS training sessions for Northern Indiana, Southwest Lower Michigan, and Northwest Ohio on our events calendar and on this page. For training outside of these areas, visit the CoCoRaHS page and click on your state. If you would like to schedule and host a training session for your area, or just want more information, please feel free to contact NWS Meteorologist Sam Lashley at Sam.Lashley@noaa.gov.