Weather Observing:
Routine Weather Observations Submitted by Interested Citizens
Quick Nav:

The CWOP home page.

Community Collaborative Rain, Hail and Snow Network, CoCoRAHS home page.

WXForum.Net here. Peer home weather station support.

Routine Weather Observations Submitted by Interested Citizens

From the CWOP home page.

The Citizen Weather Observer Program (CWOP) is a public-private 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,, stands for weather quality assurance.

There are over 8,000 registered CWOP members world wide.

CWOP members send their weather data by internet alone or internet-wireless combination to the findU server and then every five minutes, the data are sent from the findU server to the NOAA MADIS server. The data undergo quality checking and then are distributed 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
• Colorado Avalanche Information Center
• 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




From the CoCoRAHS about us page.


CoCoRaHS is an acronym for the Community Collaborative Rain, Hail and Snow Network.  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).   By using low-cost measurement tools, stressing training and education, and utilizing an interactive Web-site, our aim is to provide the highest quality data for natural resource, education and research applications. We are now in all fifty states.