National Digital Forecast Database

National Digital Forecast Database (DSI-9959) is a digital data set archived at the National Climatic Data Center (NCDC). The National Digital Forecast Database (NDFD) provides access to gridded forecast of sensible weather elements. These sensible weather elements include: temperature, dew point, winds, chance of precipitation, precipitation amount, weather, and sky cover. These are plotted every 3 hours out to 72 hours; every 6 hours out to 168 hours. Additional variables include: max/min temperatures (every 24 hours, out to 168 hours), probability of precipitation (every 12 hours, out to 168 hours), precipitation amount (every 6 hours out to 72 hours), snow amount (every 6 hours out to 48 hours), and wave height (every 12 hours out to 120 hours). All of these parameters are available for time scales as small as an hour and space scales of a few kilometers. The NDFD will also contain, in time, watch and warning information and weather elements from National Centers for Environmental Prediction (NCEP) centers such as marine and climate products. Digital forecast data are archived for all NWS Weather Forecast Offices (WFO's) and are mosaicked and available for access for the coterminous United States (CONUS), Alaska, Hawaii, and Guam, as well as 16 predefined subsectors covering the CONUS.