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Be sure to report each day, even if you received no rain.  Zeros are important information when we look at rainfall distribution.
In another week we will begin March Madness 2018, our annual observer recruiting drive.  Arizona won the CoCoRaHS March Madness in 2016 with 192 new observers, most of them in northern Arizona, recruited by the Flagstaff NWS Office.  This is also the time of year when the NWS offices begin their spotter training classes in  preparation for the summer monsoon activity.  So if you know anyone who is interested in the weather or even just the monsoon, encourage them to become a CoCoRaHS observer.

If you know someone in the Rainlog network, who uses the 4" rain gauge, encourage them to join the CoCoRaHS network as well.  We can always use more observers and it only takes a few extra moments to report their values to both networks.  Currently the National Weather Service ingests the CoCoRaHS observer data and uses our values in local flood advisories and warnings, particularly Significant Weather reports.

Contact me if you have questions or ideas at  Thank you for participating and volunteering your time.

Nancy Selover - Co-State Coordinator
Tony Merriman - Co-State Coordinator