National Weather Service United States Department of Commerce

Winter will be Returning by Tuesday Night

Rain and snow continues tonight, especially along and south of I-96. A much better chance of snow will arrive Tuesday night and Wednesday, with accumulations expected. Colder weather will then follow for the end of the week. Read More >


Welcome to the NWS Grand Rapids Cooperative Observer website!
These pages were designed to highlight the important contributions of our cooperative observers and to provide access to the COOP data, and other sources of weather and climate data.

Weather data comes from a wide variety of sources, including satellite, remote sensors, radars, automated observing stations, and volunteer cooperative observers. Each and every day, a wide spectrum of users access these weather data to solve problems and plan their lives. Whether it is a farmer in Michigan, a climate scientist in Europe, or a weather enthusiast in New York, the weather data that our cooperative observers collect has a profound impact on society.

These pages were designed to help our customers access COOP and other sources of data, describe the uses of data, explain how to become an observer, and acknowledge our award winning COOP observers.

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