Historical Observing Metadata Repository

The Historical Observing Metadata Repository (HOMR) is NCDC's integrated station history database that provides in situ or land-based station metadata in support of NCDC research, reporting, data products, and web applications. HOMR tracks detailed information for a variety of weather stations throughout their lifespans, including identifiers, names, locations, observation times, reporting methods, photos, and equipment modifications and siting. Station histories are most extensive for the National Weather Service (NWS) Cooperative Observing Program, and they include officially documented station changes that adhere to an NWS approval process. Use the search below to access these historical station details.

Publication History Report

This report pertains to the roughly 9,000 NWS Cooperative Network sites whose observations are published in NCDC's Climatological Data or Hourly Precipitation Data publications. It is a compilation of elements observed and/or reported for all published stations in the Cooperative network. It uses repeating groups of details by station, data program, element and equipment.

The PHR replaces the legacy Climatological Data Master Station Index (CDMSI) and Hourly Precipitation Data Master Station Index (HPDMSI) and provides a more complete, historical view of element details.

PHR, Standard Version
  • phr.txt.zip / Layout
    Last updated 3 weeks ago. Fixed-length flatfile as specified in the reference documentation.
  • phr.psv.zip
    Last updated 3 weeks ago. Pipe-delimited format.