Catalog https://www.ncei.noaa.gov/thredds/catalog/model-srrs-grib/201204/20120418/catalog.html

Dataset	Size	Last Modified
`20120418`		`--`
`SRRS GRIB: 8 hour 3X Ozone Concentration : 2012-04-18 All Cycles & All forecasts`	`261.4 Mbytes`	`2012-04-22T07:40:45Z`
`SRRS GRIB: 1 hour 3X Ozone Concentration : 2012-04-18 All Cycles & All forecasts`	`280.6 Mbytes`	`2012-04-22T07:40:07Z`
`SRRS GRIB: 8 hour 5X Ozone Concentration : 2012-04-18 All Cycles & All forecasts`	`261.4 Mbytes`	`2012-04-22T07:39:26Z`
`SRRS GRIB: 1 hour 5X Ozone Concentration : 2012-04-18 All Cycles & All forecasts`	`280.6 Mbytes`	`2012-04-22T07:38:47Z`
`SRRS GRIB: Smoke : 2012-04-18 All Cycles & All forecasts`	`544.3 Mbytes`	`2012-04-22T07:38:05Z`
`SRRS GRIB: National Convective Weather Forecast : 2012-04-18 : All Times`	`174.0 Mbytes`	`2012-04-22T07:36:52Z`
`SRRS GRIB: 20 Km U.S. Current Icing Potential : 2012-04-18 All Cycles / All Vertical Levels / Analysis`	`240.8 Mbytes`	`2012-04-22T07:36:41Z`
`SRRS GRIB: 40 Km U.S. Current Icing Potential : 2012-04-18 All Cycles / All Vertical Levels / Analysis`	`61.08 Mbytes`	`2012-04-22T07:36:37Z`
`SRRS GRIB: N.AM 500 mb Heights Analysis : 2012-04-18 All Cycles & Analysis`	`72.76 Kbytes`	`2012-04-22T07:36:33Z`
`SRRS GRIB: N.AM 1000 mb Heights Analysis : 2012-04-18 All Cycles & Analysis`	`81.14 Kbytes`	`2012-04-22T07:36:32Z`
`SRRS GRIB: N.AM Precipitable Water : 2012-04-18 All Cycles & Analysis`	`43.41 Kbytes`	`2012-04-22T07:36:31Z`
`SRRS GRIB: N.AM 700MB Mean Relative Humidity : 2012-04-18 All Cycles & Analysis`	`30.84 Kbytes`	`2012-04-22T07:36:28Z`