Catalog https://www.ncei.noaa.gov/thredds/catalog/model-srrs-grib/200407/20040721/catalog.html

Dataset	Size	Last Modified
`20040721`		`--`
`SRRS GRIB: National Convective Weather Forecast : 2004-07-21 : All Times`	`59.61 Mbytes`	`2008-08-08T12:41:20Z`
`SRRS GRIB: 40 Km U.S. Current Icing Potential : 2004-07-21 All Cycles / All Vertical Levels / Analysis`	`8.268 Mbytes`	`2008-08-08T12:41:12Z`
`SRRS GRIB: N.AM 500 mb Heights Analysis : 2004-07-21 All Cycles & Analysis`	`18.66 Kbytes`	`2008-08-08T12:41:07Z`
`SRRS GRIB: N.AM 1000 mb Heights Analysis : 2004-07-21 All Cycles & Analysis`	`17.26 Kbytes`	`2008-08-08T12:41:03Z`
`SRRS GRIB: N.AM Precipitable Water : 2004-07-21 All Cycles & Analysis`	`14.46 Kbytes`	`2008-08-08T12:41:00Z`
`SRRS GRIB: N.AM 700MB Mean Relative Humidity : 2004-07-21 All Cycles & Analysis`	`10.27 Kbytes`	`2008-08-08T12:40:51Z`