Historical Observing Metadata Repository

The Historical Observing Metadata Repository (HOMR) is NCEI's integrated station history database that provides in situ or land-based station metadata in support of NCEI 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.

Station Metadata Contacts & Additional Info

For station id requests, metadata inquiries, and CRN station event details, use the links below.

Metadata Inquiries

If you have a Datzilla account, please log a ticket using "40. NCDC Station History / CSSA Updates" source system.

Note: Datzilla Accounts are restricted to NOAA Employees, NOAA/NCEI Regional Climate Partners (e.g. RCC's and SC's) and any .edu researcher who is sponsored by NOAA or NCEI to need a Datzilla Account.

Please contact the Station Metadata team for questions relating to station metadata offered on this site:

For metadata orders, please contact NCEI's User Engagement and Services Branch at NCDC.Orders@noaa.gov or 828-271-4800.

Station Event Details for USCRN, USRCRN, and Alabama USRCRN networks

The Integrated Station Information System (ISIS) is the system used to access station details for US Climate Reference Network (USCRN), US Regional Climate Reference Network (USRCRN), and Alabama Regional Climate Network (AL USRCRN) networks. To view detailed, comprehensive metadata for weather stations within these networks, use ISIS:


View the privacy policy for NWS Cooperative Network Metadata here.

National Centers for Environmental Information

NOAA National Centers for Environmental Information (NCEI) was created by the merger of NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.