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 History Search

Id Location Name Network

Search Results List

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Station Information

  • Station-Level (MSHR) Data
  • Element-Level (PHR) Data
  • Location Data
  • Misc Data
Station MSHR Content
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Station PHR Content
Station Location Content
Station Miscellaneous Content
Station External Links

Current Holdings

Type Description Number of Stations Product Page Station List Layout File Station Photos
NWS COOP NWS Cooperative Network > 33,000 Go View Layout
GHCNd Global Historical Climatology Network daily > 120,000 Go View Layout
GHCNm-LT Global Land Surface Databank, future Global Historical Climatology Network monthly Land Temperature v4 > 35,000 Go View Layout
ASOS Automated Surface Observing System > 900 Go View Layout      
PLCD (Primary) Local Climatological Data (First Order) > 270 LCD/ PLCD View Layout
USCRN U.S. Climate Reference Network > 130 Go View Layout      
USRCRN U.S. Regional Climate Reference Network > 70 Go View Layout      
AL USRCRN Alabama U.S. Regional Climate Reference Network > 15 View Layout      
USHCN U.S. Historical Climatological Network 1,218 Go View Layout
NEXRAD NEXRAD Radar > 150 Go View Layout
AWOS Automated Weather Observing System > 1100 View Layout
TDWR Terminal Doppler Weather Radar > 45 Go View Layout
Upper Air Integrated Global Radiosonde Archive (IGRA) v2 > 2700 Go View Layout
International Other International not included above Pending
Other Various Military, Weather Service, Airways, etc. > 3,000