Beginning Monday, May 14, 2018, access to Landsat Collection 1 Level-1 and Level-2 datasets will be intermittently available from all USGS data portals. Landsat 8 and Landsat 7 Collection 1 Level-1 datasets will be fully available on EarthExplorer (EE) by the end of Monday, with Landsat 4-5 TM and Landsat 1-5 MSS becoming available on Tuesday, May 15. The ordering and processing of Landsat Collection 1 Level-2 on-demand datasets will also resume on Tuesday, May 15.
These interruptions are in support of inventory updates being implemented to consolidate Level-1 visible metadata fields across all sensors in the USGS Landsat archive. Please visit the Landsat Level-1 Metadata Changes webpage for more information about this effort.