{
  "retrieved_utc": "2026-10-20T15:43:56.032966+00:00",
  "snapshot_id": "ANADP1RW1868QBV1C4N0",
  "hours": [
    {
      "hour": "2018-11-22T06:00:00+00:00",
      "url": "https://noaa-rtma-pds.s3.amazonaws.com/rtma2p5.20181122/rtma2p5.t06z.2dvaranl_ndfd.grb2_wexp",
      "bytes": 84264163,
      "messages": [
        {
          "shortName": "vis",
          "name": "Visibility",
          "paramId": 3020,
          "typeOfLevel": "surface",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 15,
          "packingType": "grid_simple",
          "referenceValue": 0.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 0,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181122,
          "validityTime": 600,
          "dataDate": 20181122,
          "dataTime": 600,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 62261928,
          "message_length": 7021998,
          "decoded_min": 0.0,
          "decoded_max": 20000.0,
          "count_equal_1": 7,
          "count_finite": 3744965,
          "unique_min_sample": [
            0.0,
            1.0,
            2.0,
            3.0,
            4.0,
            5.0,
            6.0,
            7.0,
            8.0,
            9.0
          ],
          "field": "visibility_surface",
          "snapshot_dtype": "float64",
          "snapshot_min": 0.0,
          "snapshot_max": 20000.0,
          "snapshot_count_equal_1": 7,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        },
        {
          "shortName": "ceil",
          "name": "Ceiling",
          "paramId": 260109,
          "typeOfLevel": "cloudCeiling",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 18,
          "packingType": "grid_simple",
          "referenceValue": 1.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 1,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181122,
          "validityTime": 600,
          "dataDate": 20181122,
          "dataTime": 600,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 69283926,
          "message_length": 8426360,
          "decoded_min": 0.1,
          "decoded_max": 20000.0,
          "count_equal_1": 167,
          "count_finite": 3744965,
          "unique_min_sample": [
            0.1,
            0.2,
            0.30000000000000004,
            0.4,
            0.5,
            0.6000000000000001,
            0.7000000000000001,
            0.8,
            0.9,
            1.0
          ],
          "field": "cloud_ceiling_height",
          "snapshot_dtype": "float64",
          "snapshot_min": 0.1,
          "snapshot_max": 20000.0,
          "snapshot_count_equal_1": 167,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        }
      ]
    },
    {
      "hour": "2018-11-30T00:00:00+00:00",
      "url": "https://noaa-rtma-pds.s3.amazonaws.com/rtma2p5.20181130/rtma2p5.t00z.2dvaranl_ndfd.grb2_wexp",
      "bytes": 84264163,
      "messages": [
        {
          "shortName": "vis",
          "name": "Visibility",
          "paramId": 3020,
          "typeOfLevel": "surface",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 15,
          "packingType": "grid_simple",
          "referenceValue": 0.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 0,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181130,
          "validityTime": 0,
          "dataDate": 20181130,
          "dataTime": 0,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 62261928,
          "message_length": 7021998,
          "decoded_min": 0.0,
          "decoded_max": 20000.0,
          "count_equal_1": 0,
          "count_finite": 3744965,
          "unique_min_sample": [
            0.0,
            5.0,
            7.0,
            11.0,
            15.0,
            71.0,
            72.0,
            73.0,
            74.0,
            75.0
          ],
          "field": "visibility_surface",
          "snapshot_dtype": "float64",
          "snapshot_min": 0.0,
          "snapshot_max": 20000.0,
          "snapshot_count_equal_1": 0,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        },
        {
          "shortName": "ceil",
          "name": "Ceiling",
          "paramId": 260109,
          "typeOfLevel": "cloudCeiling",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 18,
          "packingType": "grid_simple",
          "referenceValue": 1.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 1,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181130,
          "validityTime": 0,
          "dataDate": 20181130,
          "dataTime": 0,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 69283926,
          "message_length": 8426360,
          "decoded_min": 0.1,
          "decoded_max": 20000.0,
          "count_equal_1": 212,
          "count_finite": 3744965,
          "unique_min_sample": [
            0.1,
            0.2,
            0.30000000000000004,
            0.4,
            0.5,
            0.6000000000000001,
            0.7000000000000001,
            0.8,
            0.9,
            1.0
          ],
          "field": "cloud_ceiling_height",
          "snapshot_dtype": "float64",
          "snapshot_min": 0.1,
          "snapshot_max": 20000.0,
          "snapshot_count_equal_1": 212,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        }
      ]
    },
    {
      "hour": "2018-12-02T05:00:00+00:00",
      "url": "https://noaa-rtma-pds.s3.amazonaws.com/rtma2p5.20181202/rtma2p5.t05z.2dvaranl_ndfd.grb2_wexp",
      "bytes": 83796042,
      "messages": [
        {
          "shortName": "vis",
          "name": "Visibility",
          "paramId": 3020,
          "typeOfLevel": "surface",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 15,
          "packingType": "grid_simple",
          "referenceValue": 0.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 0,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181202,
          "validityTime": 500,
          "dataDate": 20181202,
          "dataTime": 500,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 61793807,
          "message_length": 7021998,
          "decoded_min": 0.0,
          "decoded_max": 20000.0,
          "count_equal_1": 0,
          "count_finite": 3744965,
          "unique_min_sample": [
            0.0,
            3.0,
            13.0,
            26.0,
            27.0,
            28.0,
            29.0,
            30.0,
            31.0,
            32.0
          ],
          "field": "visibility_surface",
          "snapshot_dtype": "float64",
          "snapshot_min": 0.0,
          "snapshot_max": 20000.0,
          "snapshot_count_equal_1": 0,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        },
        {
          "shortName": "ceil",
          "name": "Ceiling",
          "paramId": 260109,
          "typeOfLevel": "cloudCeiling",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 18,
          "packingType": "grid_simple",
          "referenceValue": 1.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 1,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181202,
          "validityTime": 500,
          "dataDate": 20181202,
          "dataTime": 500,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 68815805,
          "message_length": 8426360,
          "decoded_min": 0.1,
          "decoded_max": 20000.0,
          "count_equal_1": 424,
          "count_finite": 3744965,
          "unique_min_sample": [
            0.1,
            0.2,
            0.30000000000000004,
            0.4,
            0.5,
            0.6000000000000001,
            0.7000000000000001,
            0.8,
            0.9,
            1.0
          ],
          "field": "cloud_ceiling_height",
          "snapshot_dtype": "float64",
          "snapshot_min": 0.1,
          "snapshot_max": 20000.0,
          "snapshot_count_equal_1": 424,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        }
      ]
    },
    {
      "hour": "2018-12-03T08:00:00+00:00",
      "url": "https://noaa-rtma-pds.s3.amazonaws.com/rtma2p5.20181203/rtma2p5.t08z.2dvaranl_ndfd.grb2_wexp",
      "bytes": 84732284,
      "messages": [
        {
          "shortName": "vis",
          "name": "Visibility",
          "paramId": 3020,
          "typeOfLevel": "surface",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 15,
          "packingType": "grid_simple",
          "referenceValue": 0.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 0,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181203,
          "validityTime": 800,
          "dataDate": 20181203,
          "dataTime": 800,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 62730049,
          "message_length": 7021998,
          "decoded_min": 0.0,
          "decoded_max": 20000.0,
          "count_equal_1": 6,
          "count_finite": 3744965,
          "unique_min_sample": [
            0.0,
            1.0,
            2.0,
            3.0,
            4.0,
            8.0,
            14.0,
            15.0,
            17.0,
            18.0
          ],
          "field": "visibility_surface",
          "snapshot_dtype": "float64",
          "snapshot_min": 0.0,
          "snapshot_max": 20000.0,
          "snapshot_count_equal_1": 6,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        },
        {
          "shortName": "ceil",
          "name": "Ceiling",
          "paramId": 260109,
          "typeOfLevel": "cloudCeiling",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 18,
          "packingType": "grid_simple",
          "referenceValue": 1.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 1,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181203,
          "validityTime": 800,
          "dataDate": 20181203,
          "dataTime": 800,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 69752047,
          "message_length": 8426360,
          "decoded_min": 0.1,
          "decoded_max": 20000.0,
          "count_equal_1": 395,
          "count_finite": 3744965,
          "unique_min_sample": [
            0.1,
            0.2,
            0.30000000000000004,
            0.4,
            0.5,
            0.6000000000000001,
            0.7000000000000001,
            0.8,
            0.9,
            1.0
          ],
          "field": "cloud_ceiling_height",
          "snapshot_dtype": "float64",
          "snapshot_min": 0.1,
          "snapshot_max": 20000.0,
          "snapshot_count_equal_1": 395,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        }
      ]
    },
    {
      "hour": "2018-12-03T14:00:00+00:00",
      "url": "https://noaa-rtma-pds.s3.amazonaws.com/rtma2p5.20181203/rtma2p5.t14z.2dvaranl_ndfd.grb2_wexp",
      "bytes": 84264163,
      "messages": [
        {
          "shortName": "vis",
          "name": "Visibility",
          "paramId": 3020,
          "typeOfLevel": "surface",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 15,
          "packingType": "grid_simple",
          "referenceValue": 0.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 0,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181203,
          "validityTime": 1400,
          "dataDate": 20181203,
          "dataTime": 1400,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 62261928,
          "message_length": 7021998,
          "decoded_min": 0.0,
          "decoded_max": 20000.0,
          "count_equal_1": 1,
          "count_finite": 3744965,
          "unique_min_sample": [
            0.0,
            1.0,
            3.0,
            24.0,
            25.0,
            31.0,
            40.0,
            49.0,
            50.0,
            51.0
          ],
          "field": "visibility_surface",
          "snapshot_dtype": "float64",
          "snapshot_min": 0.0,
          "snapshot_max": 20000.0,
          "snapshot_count_equal_1": 1,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        },
        {
          "shortName": "ceil",
          "name": "Ceiling",
          "paramId": 260109,
          "typeOfLevel": "cloudCeiling",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 18,
          "packingType": "grid_simple",
          "referenceValue": 1.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 1,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181203,
          "validityTime": 1400,
          "dataDate": 20181203,
          "dataTime": 1400,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 69283926,
          "message_length": 8426360,
          "decoded_min": 0.1,
          "decoded_max": 20000.0,
          "count_equal_1": 475,
          "count_finite": 3744965,
          "unique_min_sample": [
            0.1,
            0.2,
            0.30000000000000004,
            0.4,
            0.5,
            0.6000000000000001,
            0.7000000000000001,
            0.8,
            0.9,
            1.0
          ],
          "field": "cloud_ceiling_height",
          "snapshot_dtype": "float64",
          "snapshot_min": 0.1,
          "snapshot_max": 20000.0,
          "snapshot_count_equal_1": 475,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        }
      ]
    },
    {
      "hour": "2018-12-03T17:00:00+00:00",
      "url": "https://noaa-rtma-pds.s3.amazonaws.com/rtma2p5.20181203/rtma2p5.t17z.2dvaranl_ndfd.grb2_wexp",
      "bytes": 84264163,
      "messages": [
        {
          "shortName": "vis",
          "name": "Visibility",
          "paramId": 3020,
          "typeOfLevel": "surface",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 15,
          "packingType": "grid_simple",
          "referenceValue": 0.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 0,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181203,
          "validityTime": 1700,
          "dataDate": 20181203,
          "dataTime": 1700,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 62261928,
          "message_length": 7021998,
          "decoded_min": 0.0,
          "decoded_max": 20000.0,
          "count_equal_1": 9,
          "count_finite": 3744965,
          "unique_min_sample": [
            0.0,
            1.0,
            4.0,
            8.0,
            10.0,
            11.0,
            13.0,
            15.0,
            17.0,
            20.0
          ],
          "field": "visibility_surface",
          "snapshot_dtype": "float64",
          "snapshot_min": 0.0,
          "snapshot_max": 20000.0,
          "snapshot_count_equal_1": 9,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        },
        {
          "shortName": "ceil",
          "name": "Ceiling",
          "paramId": 260109,
          "typeOfLevel": "cloudCeiling",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 18,
          "packingType": "grid_simple",
          "referenceValue": 1.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 1,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181203,
          "validityTime": 1700,
          "dataDate": 20181203,
          "dataTime": 1700,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 69283926,
          "message_length": 8426360,
          "decoded_min": 0.1,
          "decoded_max": 20000.0,
          "count_equal_1": 280,
          "count_finite": 3744965,
          "unique_min_sample": [
            0.1,
            0.2,
            0.30000000000000004,
            0.4,
            0.5,
            0.6000000000000001,
            0.7000000000000001,
            0.8,
            0.9,
            1.0
          ],
          "field": "cloud_ceiling_height",
          "snapshot_dtype": "float64",
          "snapshot_min": 0.1,
          "snapshot_max": 20000.0,
          "snapshot_count_equal_1": 280,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        }
      ]
    },
    {
      "hour": "2018-12-03T18:00:00+00:00",
      "url": "https://noaa-rtma-pds.s3.amazonaws.com/rtma2p5.20181203/rtma2p5.t18z.2dvaranl_ndfd.grb2_wexp",
      "bytes": 83796042,
      "messages": [
        {
          "shortName": "vis",
          "name": "Visibility",
          "paramId": 3020,
          "typeOfLevel": "surface",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 14,
          "packingType": "grid_simple",
          "referenceValue": 1.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 0,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181203,
          "validityTime": 1800,
          "dataDate": 20181203,
          "dataTime": 1800,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 62261928,
          "message_length": 6553877,
          "decoded_min": 1.0,
          "decoded_max": 16000.0,
          "count_equal_1": 86,
          "count_finite": 3744965,
          "unique_min_sample": [
            1.0,
            2.0,
            3.0,
            4.0,
            5.0,
            6.0,
            7.0,
            8.0,
            9.0,
            10.0
          ],
          "field": "visibility_surface",
          "snapshot_dtype": "float64",
          "snapshot_min": 1.0,
          "snapshot_max": 16000.0,
          "snapshot_count_equal_1": 86,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        },
        {
          "shortName": "ceil",
          "name": "Ceiling",
          "paramId": 260109,
          "typeOfLevel": "cloudCeiling",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 18,
          "packingType": "grid_simple",
          "referenceValue": 10.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 1,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181203,
          "validityTime": 1800,
          "dataDate": 20181203,
          "dataTime": 1800,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 68815805,
          "message_length": 8426360,
          "decoded_min": 1.0,
          "decoded_max": 16000.0,
          "count_equal_1": 37642,
          "count_finite": 3744965,
          "unique_min_sample": [
            1.0,
            1.1,
            1.2000000000000002,
            1.3,
            1.4000000000000001,
            1.5,
            1.6,
            1.7000000000000002,
            1.8,
            1.9000000000000001
          ],
          "field": "cloud_ceiling_height",
          "snapshot_dtype": "float64",
          "snapshot_min": 1.0,
          "snapshot_max": 16000.0,
          "snapshot_count_equal_1": 37642,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        }
      ]
    },
    {
      "hour": "2018-12-03T19:00:00+00:00",
      "url": "https://noaa-rtma-pds.s3.amazonaws.com/rtma2p5.20181203/rtma2p5.t19z.2dvaranl_ndfd.grb2_wexp",
      "bytes": 83796042,
      "messages": [
        {
          "shortName": "vis",
          "name": "Visibility",
          "paramId": 3020,
          "typeOfLevel": "surface",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 14,
          "packingType": "grid_simple",
          "referenceValue": 1.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 0,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181203,
          "validityTime": 1900,
          "dataDate": 20181203,
          "dataTime": 1900,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 62261928,
          "message_length": 6553877,
          "decoded_min": 1.0,
          "decoded_max": 16000.0,
          "count_equal_1": 64,
          "count_finite": 3744965,
          "unique_min_sample": [
            1.0,
            2.0,
            3.0,
            4.0,
            5.0,
            6.0,
            7.0,
            8.0,
            9.0,
            10.0
          ],
          "field": "visibility_surface",
          "snapshot_dtype": "float64",
          "snapshot_min": 1.0,
          "snapshot_max": 16000.0,
          "snapshot_count_equal_1": 64,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        },
        {
          "shortName": "ceil",
          "name": "Ceiling",
          "paramId": 260109,
          "typeOfLevel": "cloudCeiling",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 18,
          "packingType": "grid_simple",
          "referenceValue": 10.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 1,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181203,
          "validityTime": 1900,
          "dataDate": 20181203,
          "dataTime": 1900,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 68815805,
          "message_length": 8426360,
          "decoded_min": 1.0,
          "decoded_max": 16000.0,
          "count_equal_1": 36697,
          "count_finite": 3744965,
          "unique_min_sample": [
            1.0,
            1.1,
            1.2000000000000002,
            1.3,
            1.4000000000000001,
            1.5,
            1.6,
            1.7000000000000002,
            1.8,
            1.9000000000000001
          ],
          "field": "cloud_ceiling_height",
          "snapshot_dtype": "float64",
          "snapshot_min": 1.0,
          "snapshot_max": 16000.0,
          "snapshot_count_equal_1": 36697,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        }
      ]
    },
    {
      "hour": "2018-12-04T00:00:00+00:00",
      "url": "https://noaa-rtma-pds.s3.amazonaws.com/rtma2p5.20181204/rtma2p5.t00z.2dvaranl_ndfd.grb2_wexp",
      "bytes": 83796042,
      "messages": [
        {
          "shortName": "vis",
          "name": "Visibility",
          "paramId": 3020,
          "typeOfLevel": "surface",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 14,
          "packingType": "grid_simple",
          "referenceValue": 1.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 0,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181204,
          "validityTime": 0,
          "dataDate": 20181204,
          "dataTime": 0,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 62261928,
          "message_length": 6553877,
          "decoded_min": 1.0,
          "decoded_max": 16000.0,
          "count_equal_1": 80,
          "count_finite": 3744965,
          "unique_min_sample": [
            1.0,
            3.0,
            4.0,
            5.0,
            6.0,
            7.0,
            8.0,
            9.0,
            10.0,
            11.0
          ],
          "field": "visibility_surface",
          "snapshot_dtype": "float64",
          "snapshot_min": 1.0,
          "snapshot_max": 16000.0,
          "snapshot_count_equal_1": 80,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        },
        {
          "shortName": "ceil",
          "name": "Ceiling",
          "paramId": 260109,
          "typeOfLevel": "cloudCeiling",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 18,
          "packingType": "grid_simple",
          "referenceValue": 10.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 1,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181204,
          "validityTime": 0,
          "dataDate": 20181204,
          "dataTime": 0,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 68815805,
          "message_length": 8426360,
          "decoded_min": 1.0,
          "decoded_max": 16000.0,
          "count_equal_1": 47861,
          "count_finite": 3744965,
          "unique_min_sample": [
            1.0,
            1.1,
            1.2000000000000002,
            1.3,
            1.4000000000000001,
            1.5,
            1.6,
            1.7000000000000002,
            1.8,
            1.9000000000000001
          ],
          "field": "cloud_ceiling_height",
          "snapshot_dtype": "float64",
          "snapshot_min": 1.0,
          "snapshot_max": 16000.0,
          "snapshot_count_equal_1": 47861,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        }
      ]
    },
    {
      "hour": "2018-12-04T06:00:00+00:00",
      "url": "https://noaa-rtma-pds.s3.amazonaws.com/rtma2p5.20181204/rtma2p5.t06z.2dvaranl_ndfd.grb2_wexp",
      "bytes": 83327921,
      "messages": [
        {
          "shortName": "vis",
          "name": "Visibility",
          "paramId": 3020,
          "typeOfLevel": "surface",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 14,
          "packingType": "grid_simple",
          "referenceValue": 1.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 0,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181204,
          "validityTime": 600,
          "dataDate": 20181204,
          "dataTime": 600,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 61793807,
          "message_length": 6553877,
          "decoded_min": 1.0,
          "decoded_max": 16000.0,
          "count_equal_1": 102,
          "count_finite": 3744965,
          "unique_min_sample": [
            1.0,
            2.0,
            3.0,
            4.0,
            5.0,
            6.0,
            7.0,
            8.0,
            9.0,
            10.0
          ],
          "field": "visibility_surface",
          "snapshot_dtype": "float64",
          "snapshot_min": 1.0,
          "snapshot_max": 16000.0,
          "snapshot_count_equal_1": 102,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        },
        {
          "shortName": "ceil",
          "name": "Ceiling",
          "paramId": 260109,
          "typeOfLevel": "cloudCeiling",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 18,
          "packingType": "grid_simple",
          "referenceValue": 10.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 1,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181204,
          "validityTime": 600,
          "dataDate": 20181204,
          "dataTime": 600,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 68347684,
          "message_length": 8426360,
          "decoded_min": 1.0,
          "decoded_max": 16000.0,
          "count_equal_1": 46149,
          "count_finite": 3744965,
          "unique_min_sample": [
            1.0,
            1.1,
            1.2000000000000002,
            1.3,
            1.4000000000000001,
            1.5,
            1.6,
            1.7000000000000002,
            1.8,
            1.9000000000000001
          ],
          "field": "cloud_ceiling_height",
          "snapshot_dtype": "float64",
          "snapshot_min": 1.0,
          "snapshot_max": 16000.0,
          "snapshot_count_equal_1": 46149,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        }
      ]
    },
    {
      "hour": "2018-12-04T11:00:00+00:00",
      "url": "https://noaa-rtma-pds.s3.amazonaws.com/rtma2p5.20181204/rtma2p5.t11z.2dvaranl_ndfd.grb2_wexp",
      "bytes": 83796042,
      "messages": [
        {
          "shortName": "vis",
          "name": "Visibility",
          "paramId": 3020,
          "typeOfLevel": "surface",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 14,
          "packingType": "grid_simple",
          "referenceValue": 1.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 0,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181204,
          "validityTime": 1100,
          "dataDate": 20181204,
          "dataTime": 1100,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 62261928,
          "message_length": 6553877,
          "decoded_min": 1.0,
          "decoded_max": 16000.0,
          "count_equal_1": 139,
          "count_finite": 3744965,
          "unique_min_sample": [
            1.0,
            2.0,
            3.0,
            4.0,
            5.0,
            6.0,
            7.0,
            8.0,
            9.0,
            10.0
          ],
          "field": "visibility_surface",
          "snapshot_dtype": "float64",
          "snapshot_min": 1.0,
          "snapshot_max": 16000.0,
          "snapshot_count_equal_1": 139,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        },
        {
          "shortName": "ceil",
          "name": "Ceiling",
          "paramId": 260109,
          "typeOfLevel": "cloudCeiling",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 18,
          "packingType": "grid_simple",
          "referenceValue": 10.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 1,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181204,
          "validityTime": 1100,
          "dataDate": 20181204,
          "dataTime": 1100,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 68815805,
          "message_length": 8426360,
          "decoded_min": 1.0,
          "decoded_max": 16000.0,
          "count_equal_1": 53228,
          "count_finite": 3744965,
          "unique_min_sample": [
            1.0,
            1.1,
            1.2000000000000002,
            1.3,
            1.4000000000000001,
            1.5,
            1.6,
            1.7000000000000002,
            1.8,
            1.9000000000000001
          ],
          "field": "cloud_ceiling_height",
          "snapshot_dtype": "float64",
          "snapshot_min": 1.0,
          "snapshot_max": 16000.0,
          "snapshot_count_equal_1": 53228,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        }
      ]
    },
    {
      "hour": "2018-12-04T12:00:00+00:00",
      "url": "https://noaa-rtma-pds.s3.amazonaws.com/rtma2p5.20181204/rtma2p5.t12z.2dvaranl_ndfd.grb2_wexp",
      "bytes": 83796042,
      "messages": [
        {
          "shortName": "vis",
          "name": "Visibility",
          "paramId": 3020,
          "typeOfLevel": "surface",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 14,
          "packingType": "grid_simple",
          "referenceValue": 1.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 0,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181204,
          "validityTime": 1200,
          "dataDate": 20181204,
          "dataTime": 1200,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 62261928,
          "message_length": 6553877,
          "decoded_min": 1.0,
          "decoded_max": 16000.0,
          "count_equal_1": 347,
          "count_finite": 3744965,
          "unique_min_sample": [
            1.0,
            2.0,
            3.0,
            4.0,
            5.0,
            6.0,
            7.0,
            8.0,
            9.0,
            10.0
          ],
          "field": "visibility_surface",
          "snapshot_dtype": "float64",
          "snapshot_min": 1.0,
          "snapshot_max": 16000.0,
          "snapshot_count_equal_1": 347,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        },
        {
          "shortName": "ceil",
          "name": "Ceiling",
          "paramId": 260109,
          "typeOfLevel": "cloudCeiling",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 18,
          "packingType": "grid_simple",
          "referenceValue": 10.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 1,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181204,
          "validityTime": 1200,
          "dataDate": 20181204,
          "dataTime": 1200,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 68815805,
          "message_length": 8426360,
          "decoded_min": 1.0,
          "decoded_max": 16000.0,
          "count_equal_1": 45824,
          "count_finite": 3744965,
          "unique_min_sample": [
            1.0,
            1.1,
            1.2000000000000002,
            1.3,
            1.4000000000000001,
            1.5,
            1.6,
            1.7000000000000002,
            1.8,
            1.9000000000000001
          ],
          "field": "cloud_ceiling_height",
          "snapshot_dtype": "float64",
          "snapshot_min": 1.0,
          "snapshot_max": 16000.0,
          "snapshot_count_equal_1": 45824,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        }
      ]
    },
    {
      "hour": "2018-12-09T12:00:00+00:00",
      "url": "https://noaa-rtma-pds.s3.amazonaws.com/rtma2p5.20181209/rtma2p5.t12z.2dvaranl_ndfd.grb2_wexp",
      "bytes": 84732284,
      "messages": [
        {
          "shortName": "vis",
          "name": "Visibility",
          "paramId": 3020,
          "typeOfLevel": "surface",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 14,
          "packingType": "grid_simple",
          "referenceValue": 1.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 0,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181209,
          "validityTime": 1200,
          "dataDate": 20181209,
          "dataTime": 1200,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 63198170,
          "message_length": 6553877,
          "decoded_min": 1.0,
          "decoded_max": 16000.0,
          "count_equal_1": 222,
          "count_finite": 3744965,
          "unique_min_sample": [
            1.0,
            2.0,
            3.0,
            4.0,
            5.0,
            6.0,
            7.0,
            8.0,
            9.0,
            10.0
          ],
          "field": "visibility_surface",
          "snapshot_dtype": "float64",
          "snapshot_min": 1.0,
          "snapshot_max": 16000.0,
          "snapshot_count_equal_1": 222,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        },
        {
          "shortName": "ceil",
          "name": "Ceiling",
          "paramId": 260109,
          "typeOfLevel": "cloudCeiling",
          "level": 0,
          "units": "m",
          "bitmapPresent": 0,
          "numberOfDataPoints": 3744965,
          "numberOfValues": 3744965,
          "numberOfCodedValues": 3744965,
          "missingValue": 9999,
          "bitsPerValue": 18,
          "packingType": "grid_simple",
          "referenceValue": 10.0,
          "binaryScaleFactor": 0,
          "decimalScaleFactor": 1,
          "gridType": "lambert",
          "Ni": 2345,
          "Nj": 1597,
          "scanningMode": 64,
          "validityDate": 20181209,
          "validityTime": 1200,
          "dataDate": 20181209,
          "dataTime": 1200,
          "stepType": "instant",
          "typeOfGeneratingProcess": 0,
          "message_offset": 69752047,
          "message_length": 8426360,
          "decoded_min": 1.0,
          "decoded_max": 16000.0,
          "count_equal_1": 31418,
          "count_finite": 3744965,
          "unique_min_sample": [
            1.0,
            1.1,
            1.2000000000000002,
            1.3,
            1.4000000000000001,
            1.5,
            1.6,
            1.7000000000000002,
            1.8,
            1.9000000000000001
          ],
          "field": "cloud_ceiling_height",
          "snapshot_dtype": "float64",
          "snapshot_min": 1.0,
          "snapshot_max": 16000.0,
          "snapshot_count_equal_1": 31418,
          "snapshot_count_nan": 0,
          "grid_shape": [
            1597,
            2345
          ],
          "full_grid_equal_exact": true,
          "max_abs_error": 0.0
        }
      ]
    }
  ]
}
