Northwest Knowledge Network (NKN) - THREDDS Server Catalog http://www.reacchpna.org/thredds/catalog/MET/spi/catalog.html

Dataset Size Last Modified
     Folder  REACCH METDATA (GRIDMET) Standardized Precipitation Index(SPI)   --
         spi90d.nc 6.193 Gbytes 2026-04-18T08:16:45Z
         spi5y.nc 6.126 Gbytes 2026-04-18T10:56:56Z
         spi30d.nc 6.191 Gbytes 2026-04-18T07:43:37Z
         spi2y.nc 6.180 Gbytes 2026-04-18T10:27:26Z
         spi270d.nc 6.201 Gbytes 2026-04-18T09:23:16Z
         spi1y.nc 6.196 Gbytes 2026-04-18T09:54:48Z
         spi180d.nc 6.198 Gbytes 2026-04-18T08:52:22Z
         spi14d.nc 6.184 Gbytes 2026-04-18T07:06:25Z
         Folder  provisional/   --
         Folder  permanent/   --
         Folder  early/   --

Northwest Knowledge Network (NKN) - THREDDS Server at Northwest Knowledge Network (NKN) see Info
THREDDS Data Server [Version 4.6.11 - 2017-12-04T16:22:46-0700] Documentation