National Weather Service United States Department of Commerce

Warm and Humid With a Chance for Thunderstorms Through Monday

A warm and muggy air mass will persist today and Monday. Heat index values this afternoon will reach the low to mid 90s. The humid conditions will support the development of a few showers and thunderstorms today, however activity will be limited and most locations will remain dry. A cold front passing through Monday will bring a better chance for showers and storms, especially east of US-131. 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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