This directory is used to interface with National Weather Service to obtain metadata updates to the NWS Cooperative network stations. NWS sends NCEI station changes daily as they are approved by NCEI, who QCs all station changes and has final-level approval. Each station which has an update will contain a bundle of 4 files: *.json, *.json.mnf, *.pdf, and *.pdf.mnf. The json files are ingested into HOMR daily, and tar'd up for the Archive monthly. The pdf files are ingested into EV2's Cooperative Station History library monthly, and sent to Archive monthly as part of EV2's ongoing Archive process. The station updates contain station profile information, and changes in location, instrumentation, obstructions, observers, and observation times. NCEI only receives these files when something is changed on the station, or every 3 years for a NWS-mandated update.