Cooperative Observer's Network Observation Forms - Data Tables

Record of Climatological Observations

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General

Through the National Weather Service (NWS) Cooperative Observer Program (COOP), more than 10,000 volunteers take daily weather observations. Daily observations are provided as digital scans of handwritten records or computer-generated forms. COOP data usually consist of daily maximum and minimum temperatures, snowfall, and 24-hour precipitation totals.

Where do these data come from?

Volunteer Cooperative Weather Observers measure weather every day at National Parks, seashores, mountaintops, and farms as well as in urban and suburban areas. There are several different types of instrumentation used by COOP Observers to keep track of the weather: the instruments are identical at all stations across the country.