Attention Weather Fans: Join Lake Anna’s Weather Watch from Your Backyard

August 25, 2025
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This is your chance to become part of an important network of weather-observing volunteers.
CoCoRaHS stands for the Community Collaborative Rain, Hail, and Snow Network. It began at the Colorado Climate Center at Colorado State University after the devastating flash flood in Fort Collins, CO, in 1998.

Today, CoCoRaHS observations are used by the National Weather Service, private meteorologists, hydrologists, emergency managers, local utilities, insurance adjusters, engineers, ranchers, farmers, climatologists, teachers, students, and many others.

The main goals of CoCoRaHS are to: 1) Provide accurate, high-quality precipitation data for many end users on a timely basis; 2) Increase the density of precipitation data available throughout the country by encouraging volunteer weather observing; 3) Encourage citizens to have fun participating in meteorological science and increase awareness about weather; and 4) Provide enrichment activities in water and weather resources for teachers, educators, and the community at large.

The only requirement is an interest in weather and the ability to report rain, snow, and hail accumulations daily from your home. There are no age restrictions. Participants need access to the Internet and an approved rain gauge.

Most gauges sold at hardware stores, Walmart, etc., are not approved. You can view examples of approved gauges here: http://lakeanna.online/rain.

These gauges are often available on Amazon at lower prices.

Automated or smaller/skinnier gauges are not approved because they underreport rainfall during heavier events. Numerous studies have confirmed that a 4” diameter gauge provides the most reliable measurements.

Once you become a CoCoRaHS volunteer, you’ll be assigned an observer ID and asked to take daily backyard measurements of rain, snow, and hail. The preferred observation time is around 7:00 a.m., but reports between 5:00 a.m. and 9:00 a.m. are accepted. If you’re away on vacation or business, you can submit a multi-day precipitation report when you return.

Data is entered online through a web form or the mobile app. Once submitted, you can view your observations alongside data from other volunteers in the region.

Currently, there are three observers in Orange County, two in Louisa County, and twelve in Spotsylvania County. Some are active reporters, while others are inactive.

My goal is to add another 5–10 active gauges in Orange and Louisa Counties, and increase coverage near Lake Anna in Spotsylvania County. More gauges within the Lake Anna drainage basin will improve lake management, since precipitation data directly translates into runoff levels.

By providing daily observations, you help fill in a vital piece of the weather puzzle. Your reports benefit not only scientists and agencies but also your neighbors. Plus, you’ll connect with others who share a strong interest in weather.

To connect with Michael Eckert, a certified Weather Ready Nation Ambassador, join the Lake Anna Weather facebook group at www.facebook.com/groups/238768427602182, or email [email protected].


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This is your chance to become part of an important network of weather-observing volunteers.
CoCoRaHS stands for the Community Collaborative Rain, Hail, and Snow Network. It began at the Colorado Climate Center at Colorado State University after the devastating flash flood in Fort Collins, CO, in 1998.

Today, CoCoRaHS observations are used by the National Weather Service, private meteorologists, hydrologists, emergency managers, local utilities, insurance adjusters, engineers, ranchers, farmers, climatologists, teachers, students, and many others.

The main goals of CoCoRaHS are to: 1) Provide accurate, high-quality precipitation data for many end users on a timely basis; 2) Increase the density of precipitation data available throughout the country by encouraging volunteer weather observing; 3) Encourage citizens to have fun participating in meteorological science and increase awareness about weather; and 4) Provide enrichment activities in water and weather resources for teachers, educators, and the community at large.

The only requirement is an interest in weather and the ability to report rain, snow, and hail accumulations daily from your home. There are no age restrictions. Participants need access to the Internet and an approved rain gauge.

Most gauges sold at hardware stores, Walmart, etc., are not approved. You can view examples of approved gauges here: http://lakeanna.online/rain.

These gauges are often available on Amazon at lower prices.

Automated or smaller/skinnier gauges are not approved because they underreport rainfall during heavier events. Numerous studies have confirmed that a 4” diameter gauge provides the most reliable measurements.

Once you become a CoCoRaHS volunteer, you’ll be assigned an observer ID and asked to take daily backyard measurements of rain, snow, and hail. The preferred observation time is around 7:00 a.m., but reports between 5:00 a.m. and 9:00 a.m. are accepted. If you’re away on vacation or business, you can submit a multi-day precipitation report when you return.

Data is entered online through a web form or the mobile app. Once submitted, you can view your observations alongside data from other volunteers in the region.

Currently, there are three observers in Orange County, two in Louisa County, and twelve in Spotsylvania County. Some are active reporters, while others are inactive.

My goal is to add another 5–10 active gauges in Orange and Louisa Counties, and increase coverage near Lake Anna in Spotsylvania County. More gauges within the Lake Anna drainage basin will improve lake management, since precipitation data directly translates into runoff levels.

By providing daily observations, you help fill in a vital piece of the weather puzzle. Your reports benefit not only scientists and agencies but also your neighbors. Plus, you’ll connect with others who share a strong interest in weather.

To connect with Michael Eckert, a certified Weather Ready Nation Ambassador, join the Lake Anna Weather facebook group at www.facebook.com/groups/238768427602182, or email [email protected].


Share: