United States Hourly Weather Observations (HUSWO) 1990-1995 CD-ROM is a product available from the National Climatic Data Center (NCDC). This product contains over 12 million hourly weather observations from 262 National Weather Service (NWS) stations nationwide. It has a map interface and station list for data selection, or the user can copy the data files direct from the CD (without using the ... interface). Data can be output in either English or metric units. The parameters included are: total and opaque sky cover, temperature and dew point, relative humidity, station pressure, wind direction (true north) and speed, visibility, ceiling height, present weather, ASOS cloud layer data, snow depth, and hourly precipitation. The project that produced this product was partly funded by the Environmental Protection Agency (EPA). This CD-ROM product is an update of an another CD-ROM product, Solar and Meteorological Surface Observational Network (SAMSON), C00066, which is also available from NCDC.