Radar Plan Position Indicator Scope is the collection of weather radar imagery for the period prior to the beginning of the Next Generation Radar (NEXRAD) system deployed in the mid-1990s. While there are special radar observations in the collection, especially of hurricanes, the primary source of radar imagery in this collection is the weather radar network operated by the U.S. National Weather Service and its predecessor, the U.S. Weather Bureau. This network was deployed in the late 1950s.

Radar Weather Observation is a set of archived historical manuscripts stored on microfiche. The primary source of these radar weather observations manuscript records was approximately 110 National Weather Service (NWS) radar stations. The records were placed on microfiche monthly or annually, depending on the radar station. In addition, the years these records are available vary from station to station. There were approximately 59 NWS radar observing stations equipped with weather surveillance radar which made photographs of the plan position indicator (PPI) scope on 16-mm or 35-mm film.

World Weather Records (WWR) is an archived publication and digital data set. WWR is meteorological data from locations around the world. Through most of its history, WWR has been a publication, first published in 1927. Data includes monthly mean values of pressure, temperature, precipitation, and where available, station metadata notes documenting observation practices and station configurations. In recent years, data were supplied by National Meteorological Services of various countries, many of which became members of the World Meteorological Organization (WMO).

Weighing rain gauge charts record the amount of precipitation that falls at a given location. The vast majority of the Weighing Rain Gauge Recording Charts collection comes from the National Weather Service, cooperative stations, and the Pacific Islands, however, there are some forms that were provided through international organizations and agreements. Throughout much of the history of the collection, observations were taken on paper. However, much of the paper was converted to other media.

The Standard/Legacy MSHR, formally identified as the DSI-9767 dataset, is the legacy dataset/report sorted by NCDC Station ID and period of record. This dataset/report includes historical station changes in reported fields generating multiple records for a station where a new record is created for every period in which a reported component for a station is changed. This dataset is continued to be produced to support legacy processing systems.

Surface Prognostic Charts are historical surface prognostic (forecast) charts created by the United States Weather Bureau. They include fronts, isobars, cloud, and precipitation areas. There are two separate charts: one is a four-panel 12- and 24-hour, in which the upper two panels are devoted to low-level significant weather; the other, a two-panel 36- and 48-hour with discussion. The discussion is limited to about 260 abbreviated words.

This collection includes any publications or observations about river forecasts within the United States. This includes forecasts for river flooding, water level, and forecast locations. In addition, a historical publication is available that describes in detail the river forecast and warning services as well as other hydrological services provided by the U.S. National Weather Service (NWS), including information highest stages at NWS gauges and at locations prior to gauge records, and a list of points for which water supply forecasts are issued during the Period of Record (1873-1980).

The Precipitation Frequency of the Western United States publication is an eleven volume set held in the archives. It was the culmination of many years of investigation and was based all of the previous work on precipitation- frequency studies until that time. It also replaced U.S. Weather Bureau Technical Paper No. 40 for the eleven western states. The states/volumes are: 1 Montana 2 Wyoming 3 Colorado 4 New Mexico 5 Idaho 6 Utah 7 Nevada 8 Arizona 9 Washington 10 Oregon 11 California Each volume is organized into three parts.

The Primary source of data used to produce these files were from vessels of the following cooperatives: Cuba, Denmark, Finland, France, Germany (Federal Republic of Germany), Iceland, Ireland, Netherlands, Norway, Spain, Sweden, Tunisia, United Kingdom, U.S.S.R., Yugoslavia, Canada and the United States. Other countries were added later. The purpose of these cooperative ships were to take Meteorological Observations.

WDCA Chernobyl Data consists of digital data set DSI-9681, archived at the National Centers for Environmental Information (NCEI). World Data Center for Meteorology (WDC-A), located in Asheville, North Carolina, is a meteorological data center in a worldwide network of data centers for the various sciences established to promote international exchange of scientific data. This particular dataset consists of meteorological data from the April 1986 disaster at the Chernobyl nuclear power plant in the Ukraine. Upper air observations may include: winds, dew points, and temperatures.