CoCoRaHS March Madness - Join the Precipitation Observing Team

CoCoRaHS March Madness - Join the Precipitation Observing Team

Do you like to watch the weather? Join the CoCoRaHS precipitation observing team!

Be a part of "March Madness", when each state competes to have the most new observers join CoCoRaHS during the month of March. Click the red banner below to see the latest March Madness news from CoCoRaHS, including the list of new observers per state.

For additional information on the network, to view data from CoCoRaHS observers across the country, or to join the team please visit the CoCoRaHS website at:


What is CoCoRaHS?

The nationwide volunteer Community Collaborative Rain, Hail, & Snow Network (CoCoRaHS) is a grass-roots effort to provide precipitation reports in as many locations as possible across the country. "Because Every Drop Counts!"

There is always a need for a greater number of observations, as the saying goes "the rain doesn't fall the same on all". Due to the variability of precipitation, amounts measured can be quite different only a block or two away. Help fill in the gaps! The more observations, the clearer the picture, the better the understanding of the weather conditions that day.

CoCoRaHS gives everyone a way to share their precipitation measurements via the web. All you need to join the CoCoRaHS network is a standard 4" diameter plastic rain gage (shown in the photos above), and access to the internet to relay reports through the CoCoRaHS website. You can report precipitation daily, or only on days when you are able to take measurements. It's up to you! Any precipitation reports are greatly appreciated.

The National Weather Service uses CoCoRaHS precipitation data daily in river forecast models, flood and drought forecasts, and precipitation and snowfall maps and tables.

CoCoRaHS observers can also send the National Weather Service real-time reports of severe weather including hail size, flooding, storm damage, and excessive rainfall totals, which greatly assist meteorologists with determing the impact of storms on local communities.

"Because Every Drop Counts!"

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