Citizen Weather Observer Program

Site Contents: News Main Page Data Quality Member Lists Map/Data Displays Ham Wx Station Info CW Packet Checking Weather Station Resources Archive and miscellaneous things

Related Links: CWOP info APRS-IS info findu.com info FAQ & Forums T238 home page MADIS Program APRSWXNET info APRS Servers to Use NOAA mesonet display

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What's going on here?

The Citizen Weather Observer Program (CWOP) is a private-public partnership with three main goals: 1) to collect weather data contributed by citizens; 2) to make these data available for weather services and homeland security; and 3) to provide feedback to the data contributors so that they have the tools to check and improve their data quality. In fact, the web address, wxqa.com, stands for weather quality assurance.

There are over 6,000 registered CWOP members world wide and a graph of the number of North American CWOP stations sending data over the past four days is shown under the older name APRSWXNET. The number of world-wide citizen weather stations sending data through APRS-IS (Internet-Service) is shown for the past 4 years.

CWOP members send their weather data by internet alone and internet-wireless combination to the findU server and then every 15 minutes, the entire data set is sent from the findU server to the NOAA MADIS server. The data are checked for quality and then redistributed to users. There are over 500 different user organizations of the CWOP mesonet data. Here is a partial list:

• NWS Weather Forecast Offices
• National Center for Environmental Prediction
• National Ocean Service
• National Transportation Safety Board
• National Center for Atmospheric Research
• Department of Homeland Security
• Denver Urban Drainage and Flood Control District
• Kennedy Space Center
• NASA Marshall Space Flight Center
• University Corporation for Atmospheric Research
• Embry-Riddle Aeronautical University
• MIT Lincoln Laboratories
• University of Utah
• Penn State University
• Mississippi State University
• University of Alaska
• University of North Dakota
• Hampton University
• Texas A&M University
• University of Hawaii
• Florida State University
• Weather Underground

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