TDS Catalog http://thredds-aws.unidata.ucar.edu/thredds/catalog/nexrad/level2/S3/2021/catalog.html

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THREDDS Data Server - AWS Level 2 RADAR Test Server at Unidata see Info
THREDDS Data Server [Version 4.6.15 - 2020-06-16T13:36:16-0600] Documentation