Severe Thunderstorms with Tornadoes and Heavy Rain Threat shifts East for Tuesday

Severe thunderstorms are forecast to develop from the mid-Mississippi River Valley south into the ArkLaTex on Tuesday. These storms can bring large hail, damaging winds, a few tornadoes and flash flooding. Residents should heed any warnings issued and follow local forecast office social media pages for updates. Read More >

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CoCoRaHS Is Here!

What IS CoCoRaHS? rain-gauge

There is a new way to let the National Weather Service know how much rain, hail, or snow you've measured in your back yard! The Community Collaborative Rain, Hail, and Snow (CoCoRaHS) Network is here. CoCoRaHS is a unique, non-profit, community-based network of volunteers of all ages and backgrounds working together to measure and map precipitation (rain, hail and snow). The program will help meteorologists, hydrologists, and researchers study the variability of precipitation across Alabama, and the accumulated data will be available to anyone with a use or interest in precipitation data.

How did CoCoRaHS get started?

CoCoRaHS started because of a devastating flood that struck Fort Collins, Colorado in 1998. When researchers went back to examine the precipitation data, they discovered that the rainfall leading to the flood missed all of the official gages. Colorado State Climatologist Nolan Doeskin developed a new volunteer observing network to fill in the gaps between official gages called CoCoRaHS.

Sounds great! How can I sign up?

There are three options available, depending on where you live and the measuring equipment you have.

To find out more, visit the CoCoRaHS web site. If you'd like to sign up, just visit the web site and click on "Join CoCoRaHS" to register your backyard or schoolyard as a reporting site. Once you register and begin to report, your observations will become part of the record and will be plotted on maps of your county and state. You can view the maps and see how your observation fits in with your neighbors.

If you decide to sign up, we encourage you to go through the online training located on the CoCoRaHS web site. It will detail proper gage siting techniques as well as other program information. Note that you will need to provide your own rain gage (you can purchase one through CoCoRaHS, and more details can be found on the CoCoRaHS site.)

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Severe Thunderstorms with Tornadoes and Heavy Rain Threat shifts East for Tuesday

Community Collaborative Rain, Hail, and Snow Network