Tropical Depression 20E


ARCHER-V2 Auto-positioning Information
Advanced Dvorak Technique (ADT)
Version 9.0
 

                                         -------FORECAST-----   ----ARCHER---- 50% cert  95% cert Eyewall   Conf Alpha  Eye
     Date/Time(UTC)     Source   Sensor    Lat     Lon   Vmax      Lat     Lon   radius    radius  radius  Score Score  Prob    .
   20201103 20:50:31    GOES17      Vis   14.08  116.07  35.0    13.70  116.12     0.24      0.67   0.10    0.55  7.05  68.9 GIF
   20201103 21:20:31    GOES17      Vis   14.14  116.17  35.0    13.82  116.17     0.19      0.53   0.10    0.68  8.94  78.6 GIF
   20201103 21:50:31    GOES17   NearIR   14.21  116.27  35.0    13.51  116.06     0.57      1.61   0.25    0.38  2.94  65.4 GIF
   20201103 22:20:31    GOES17      Vis   14.27  116.37  35.0    14.14  116.29     0.25      0.70   0.50    0.53  6.77  62.2 GIF
   20201103 22:50:31    GOES17      Vis   14.33  116.47  35.0    14.15  116.37     0.17      0.48   0.20    0.74  9.92  80.5 GIF
   20201103 23:20:31    GOES17       IR   14.39  116.57  35.0    13.32  116.29     0.29      0.81   0.10    0.80  5.85  95.4 GIF
   20201103 23:50:31    GOES17   NearIR   14.45  116.67  35.0    14.15  116.34     0.58      1.64   0.05    0.38  2.89  62.4 GIF
   20201104 00:20:31    GOES17   NearIR   14.51  116.77  35.0    13.91  116.52     0.40      1.12   0.05    0.53  4.24  66.9 GIF
   20201104 00:50:31    GOES17       IR   14.57  116.87  35.0    14.07  116.31     0.36      1.01   0.05    0.69  4.71  76.0 GIF
   20201104 01:20:31    GOES17   NearIR   14.63  116.98  35.0    14.06  116.85     0.30      0.86   0.15    0.68  5.54  92.7 GIF
   20201104 01:50:31    SSMI18 85-92GHz   14.49  116.74  35.0    14.84  117.59     0.39      1.11    N/A    0.50  4.07   0.0 GIF
   20201104 02:20:31    SSMI18 85-92GHz   14.70  117.09  35.0    14.70  117.38     0.32      0.90    N/A    0.81  5.24   0.0 GIF
   20201104 02:50:31    SSMI18 85-92GHz   14.70  117.09  35.0    14.83  117.37     0.32      0.90    N/A    0.81  5.16   0.0 GIF
   20201104 03:20:31    SSMI18 85-92GHz   14.70  117.09  35.0    14.89  117.47     0.32      0.90    N/A    0.81  5.05   0.0 GIF
   20201104 03:50:31    GOES17       IR   15.01  117.35  35.0    14.23  117.33     0.31      0.89   0.05    0.75  5.35 100.0 GIF
   20201104 04:20:31    SSMI18 85-92GHz   14.70  117.09  35.0    15.02  117.65     0.32      0.90    N/A    0.81  4.79   0.0 GIF
   20201104 04:50:31    SSMI18 85-92GHz   14.70  117.09  35.0    15.08  117.74     0.32      0.90    N/A    0.81  4.65   0.0 GIF
   20201104 05:20:31    SSMI18 85-92GHz   14.70  117.09  35.0    15.14  117.84     0.32      0.90    N/A    0.81  4.50   0.0 GIF
   20201104 05:50:31    SSMI18 85-92GHz   14.70  117.09  35.0    15.21  117.93     0.32      0.90    N/A    0.81  4.36   0.0 GIF
   20201104 06:20:31    SSMI18 85-92GHz   14.70  117.09  35.0    15.27  118.03     0.32      0.90    N/A    0.81  4.21   0.0 GIF
   20201104 06:50:31    SSMI18 85-92GHz   14.70  117.09  35.0    15.33  118.13     0.32      0.90    N/A    0.81  4.07   0.0 GIF
   20201104 07:20:31    SSMI18 85-92GHz   14.70  117.09  35.0    15.38  118.23     0.32      0.90    N/A    0.81  3.93   0.0 GIF
   20201104 07:50:31    SSMI18 85-92GHz   14.70  117.09  35.0    15.45  118.32     0.32      0.90    N/A    0.81  3.79   0.0 GIF
   20201104 08:20:31    SSMI18 85-92GHz   14.70  117.09  35.0    15.50  118.42     0.32      0.90    N/A    0.81  3.66   0.0 GIF
   20201104 08:50:32    SSMI18 85-92GHz   14.70  117.09  35.0    15.52  118.68     0.32      0.90    N/A    0.81  3.53   0.0 GIF
   20201104 09:20:32    SSMI18 85-92GHz   14.70  117.09  35.0    15.57  118.77     0.32      0.90    N/A    0.81  3.41   0.0 GIF
   20201104 09:50:32    SSMI18 85-92GHz   14.70  117.09  35.0    15.65  118.84     0.32      0.90    N/A    0.81  3.29   0.0 GIF
   20201104 10:20:32    SSMI18 85-92GHz   14.70  117.09  35.0    15.71  118.93     0.32      0.90    N/A    0.81  3.17   0.0 GIF
   20201104 10:50:32    SSMI18 85-92GHz   14.70  117.09  35.0    15.76  119.02     0.32      0.90    N/A    0.81  3.06   0.0 GIF
   20201104 11:20:32    SSMI18 85-92GHz   14.70  117.09  35.0    15.82  119.10     0.32      0.90    N/A    0.81  2.95   0.0 GIF
   20201104 11:50:32    SSMI18 85-92GHz   14.70  117.09  35.0    15.87  119.19     0.32      0.90    N/A    0.81  2.85   0.0 GIF
   20201104 12:20:32    SSMI18 85-92GHz   14.70  117.09  35.0    15.93  119.27     0.32      0.90    N/A    0.81  2.76   0.0 GIF
   20201104 12:50:32    SSMI18 85-92GHz   14.70  117.09  35.0    15.98  119.36     0.32      0.90    N/A    0.81  2.66   0.0 GIF
   20201104 13:20:32    GOES17       IR   16.11  119.23  35.0    16.31  120.40     0.52      1.46   0.05    0.54  3.25  99.2 GIF
   20201104 13:50:32    SSMI18 85-92GHz   14.70  117.09  35.0    16.09  119.53     0.32      0.90    N/A    0.81  2.49   0.0 GIF
   20201104 14:20:32    SSMI18 85-92GHz   16.18  119.34  35.0    16.12  119.96     0.28      0.80    N/A    1.00  5.88   0.0 GIF
   20201104 14:50:32    SSMI18 85-92GHz   16.18  119.34  35.0    16.78  119.75     0.28      0.80    N/A    1.00  5.78   0.0 GIF
   20201104 15:20:32    SSMI18 85-92GHz   16.18  119.34  35.0    16.85  119.83     0.28      0.80    N/A    1.00  5.65   0.0 GIF
   20201104 15:50:32    SSMI18 85-92GHz   16.18  119.34  35.0    16.92  119.91     0.28      0.80    N/A    1.00  5.50   0.0 GIF
   20201104 16:20:32    GOES17      Vis   17.09  119.42  35.0    17.26  120.05     0.25      0.70   0.05    0.53  6.78  68.5 GIF
   20201104 16:50:32    SSMI18 85-92GHz   16.18  119.34  35.0    17.05  120.09     0.28      0.80    N/A    1.00  5.16   0.0 GIF
   20201104 17:20:32    GOES17      Vis   17.22  119.59  35.0    17.22  120.17     0.30      0.84   0.05    0.45  5.62  66.5 GIF
   20201104 17:50:32    SSMI18 85-92GHz   16.18  119.34  35.0    17.18  120.26     0.28      0.80    N/A    1.00  4.81   0.0 GIF
   20201104 18:20:32    SSMI18 85-92GHz   16.18  119.34  35.0    17.24  120.35     0.28      0.80    N/A    1.00  4.64   0.0 GIF
   20201104 18:50:32    SSMI18 85-92GHz   16.18  119.34  35.0    17.29  120.45     0.28      0.80    N/A    1.00  4.47   0.0 GIF
   20201104 19:20:32    SSMI18 85-92GHz   16.18  119.34  35.0    17.35  120.53     0.28      0.80    N/A    1.00  4.30   0.0 GIF
   20201104 19:50:32    SSMI18 85-92GHz   16.18  119.34  35.0    17.41  120.62     0.28      0.80    N/A    1.00  4.14   0.0 GIF
   20201104 20:20:32    GOES17       IR   17.56  120.14  35.0    17.03  121.58     0.26      0.74   0.05    0.85  6.37 100.0 GIF
   20201104 20:50:31    SSMI18 85-92GHz   16.18  119.34  35.0    17.57  121.27     0.28      0.80    N/A    1.00  3.83   0.0 GIF
   20201104 21:20:31    SSMI18 85-92GHz   16.18  119.34  35.0    17.63  121.33     0.28      0.80    N/A    1.00  3.69   0.0 GIF
   20201104 21:50:31    SSMI18 85-92GHz   16.18  119.34  35.0    17.67  121.42     0.28      0.80    N/A    1.00  3.55   0.0 GIF
   20201104 22:20:31    SSMI18 85-92GHz   16.18  119.34  35.0    17.73  121.48     0.28      0.80    N/A    1.00  3.41   0.0 GIF
   20201104 22:50:31    SSMI18 85-92GHz   16.18  119.34  35.0    17.76  121.56     0.28      0.80    N/A    1.00  3.29   0.0 GIF
   20201104 23:20:31    SSMI18 85-92GHz   16.18  119.34  35.0    17.79  121.65     0.28      0.80    N/A    1.00  3.17   0.0 GIF
   20201104 23:50:31    SSMI18 85-92GHz   16.18  119.34  35.0    17.85  121.71     0.28      0.80    N/A    1.00  3.05   0.0 GIF
   20201105 00:20:31    SSMI16 85-92GHz   17.98  121.19  40.0    17.64  121.16     0.41      1.16    N/A    0.44  4.07   0.0 GIF
   20201105 00:50:31    SSMI16 85-92GHz   17.98  121.19  40.0    17.68  121.24     0.41      1.16    N/A    0.44  4.03   0.0 GIF
   20201105 01:20:31    SSMI16 85-92GHz   17.98  121.19  40.0    17.71  121.32     0.41      1.16    N/A    0.44  3.97   0.0 GIF
   20201105 01:50:31    SSMI16 85-92GHz   17.98  121.19  40.0    17.74  121.40     0.41      1.16    N/A    0.44  3.90   0.0 GIF
   20201105 02:20:31    SSMI16 85-92GHz   17.98  121.19  40.0    17.77  121.48     0.41      1.16    N/A    0.44  3.82   0.0 GIF
   20201105 02:50:31    GOES17   NearIR   18.09  121.68  40.0    17.76  121.78     0.36      1.01   0.30    0.59  4.72  87.4 GIF
   20201105 03:20:31    SSMI16 85-92GHz   17.98  121.19  40.0    17.77  121.70     0.41      1.16    N/A    0.44  3.65   0.0 GIF
   20201105 03:50:31    SSMI16 85-92GHz   17.98  121.19  40.0    17.80  121.77     0.41      1.16    N/A    0.44  3.55   0.0 GIF
   20201105 04:20:31    GOES17   NearIR   18.20  121.89  40.0    17.70  121.78     0.31      0.87   0.05    0.67  5.42  74.0 GIF
   20201105 04:50:31    GOES17       IR   18.23  121.96  40.0    17.66  121.85     0.43      1.21   0.50    0.61  3.92  86.3 GIF
   20201105 05:20:31    GOES17       IR   18.27  122.03  40.0    17.72  121.82     0.33      0.93   0.50    0.73  5.11  69.0 GIF
   20201105 05:50:31    GOES17       IR   18.31  122.10  40.0    17.68  121.92     0.30      0.85   0.35    0.77  5.55  71.9 GIF
   20201105 06:20:31    SSMI16 85-92GHz   17.98  121.19  40.0    17.99  122.13     0.41      1.16    N/A    0.44  3.09   0.0 GIF
   20201105 06:50:31    SSMI16 85-92GHz   17.98  121.19  40.0    18.01  122.20     0.41      1.16    N/A    0.44  3.00   0.0 GIF
   20201105 07:20:31    GOES17   NearIR   18.41  122.32  40.0    17.71  122.00     0.57      1.60   0.05    0.38  2.96  51.0 GIF
   20201105 07:50:31    GOES17   NearIR   18.45  122.39  40.0    17.77  122.16     0.33      0.95   0.25    0.62  5.01  54.7 GIF
   20201105 08:20:31    GOES17   NearIR   18.48  122.47  40.0    17.88  122.20     0.36      1.00   0.45    0.59  4.72  49.8 GIF
   20201105 08:50:32       GMI 85-92GHz   18.44  122.38  40.0    18.14  122.07     0.39      1.10    N/A    0.52  4.22   0.0 GIF
   20201105 09:20:32       GMI 85-92GHz   18.44  122.38  40.0    18.16  122.13     0.39      1.10    N/A    0.52  4.15   0.0 GIF
   20201105 09:50:32       GMI 85-92GHz   18.44  122.38  40.0    18.19  122.20     0.39      1.10    N/A    0.52  4.06   0.0 GIF
   20201105 10:20:32    GOES17   NearIR   18.16  122.48  45.0    17.93  122.51     0.38      1.07   0.10    0.55  4.44  45.7 GIF
   20201105 10:50:32    GOES17       IR   18.18  122.55  45.0    17.93  122.63     0.39      1.09   0.50    0.65  4.34  40.7 GIF
   20201105 11:20:32    GOES17   NearIR   18.21  122.62  45.0    17.93  122.67     0.34      0.96   0.05    0.61  4.96  48.0 GIF
   20201105 11:50:32       GMI 85-92GHz   18.44  122.38  40.0    18.27  122.47     0.39      1.10    N/A    0.52  3.66   0.0 GIF
   20201105 12:20:32       GMI 85-92GHz   18.44  122.38  40.0    18.30  122.54     0.39      1.10    N/A    0.52  3.55   0.0 GIF
   20201105 12:50:32    GOES17   NearIR   18.28  122.82  45.0    18.18  122.79     0.33      0.93   0.15    0.63  5.12  47.1 GIF
   20201105 13:20:32    GOES17   NearIR   18.30  122.89  45.0    18.18  122.89     0.30      0.84   0.20    0.69  5.62  40.5 GIF
   20201105 13:50:32    GOES17   NearIR   18.33  122.95  45.0    18.20  123.06     0.27      0.75   0.10    0.77  6.31  47.6 GIF
   20201105 14:20:32    GOES17   NearIR   18.35  123.02  45.0    18.12  123.12     0.23      0.66   0.05    0.87  7.15  47.3 GIF
   20201105 14:50:32    SSMI15 85-92GHz   18.27  122.80  45.0    18.69  122.72     0.22      0.62    N/A    1.54  6.84   0.0 GIF
   20201105 15:20:32    GOES17   NearIR   18.31  122.94  45.0    17.89  123.10     0.24      0.68   0.10    0.85  6.97  36.0 GIF
   20201105 15:50:32    SSMI15 85-92GHz   18.27  122.80  45.0    18.73  122.84     0.22      0.62    N/A    1.54  6.30   0.0 GIF
   20201105 16:20:32    GOES17   NearIR   18.34  123.05  45.0    18.12  123.19     0.26      0.73   0.45    0.79  6.51  32.3 GIF
   20201105 16:50:32    GOES17   NearIR   18.36  123.11  45.0    18.18  123.17     0.28      0.80   0.45    0.73  5.95  27.5 GIF
   20201105 17:20:32    SSMI15 85-92GHz   18.27  122.80  45.0    18.77  123.01     0.22      0.62    N/A    1.54  5.51   0.0 GIF
   20201105 17:50:32    SSMI15 85-92GHz   18.27  122.80  45.0    18.79  123.08     0.22      0.62    N/A    1.54  5.26   0.0 GIF
   20201105 18:20:32    GOES17   NearIR   18.40  123.30  45.0    18.38  123.45     0.32      0.90   0.45    0.65  5.29  22.7 GIF
   20201105 18:50:32    GOES17      Vis   18.42  123.36  45.0    18.32  123.52     0.12      0.34   0.10    1.02 13.88 100.0 GIF
   20201105 19:20:32    GOES17   NearIR   18.43  123.42  45.0    18.33  123.60     0.35      0.98   0.40    0.60  4.82  40.7 GIF
   20201105 19:50:32    GOES17   NearIR   18.44  123.48  45.0    18.39  123.61     0.37      1.04   0.50    0.57  4.58  33.8 GIF
   20201105 20:20:32    SSMI15 85-92GHz   18.27  122.80  45.0    18.85  123.39     0.22      0.62    N/A    1.54  4.19   0.0 GIF
   20201105 20:50:31    GOES17      Vis   18.50  123.58  35.0    18.42  123.71     0.15      0.42   0.30    0.84 11.34  84.1 GIF
   20201105 21:20:31    SSMI15 85-92GHz   18.27  122.80  45.0    18.90  123.48     0.22      0.62    N/A    1.54  3.84   0.0 GIF
   20201105 21:50:31    GOES17      Vis   18.51  123.69  35.0    18.41  123.90     0.14      0.39   0.50    0.89 12.08  91.7 GIF
   20201105 22:20:31    SSMI15 85-92GHz   18.27  122.80  45.0    18.91  123.59     0.22      0.62    N/A    1.54  3.52   0.0 GIF
   20201105 22:50:31    SSMI15 85-92GHz   18.27  122.80  45.0    18.90  123.65     0.22      0.62    N/A    1.54  3.38   0.0 GIF
   20201105 23:20:31    SSMI15 85-92GHz   18.27  122.80  45.0    18.90  123.70     0.22      0.62    N/A    1.54  3.24   0.0 GIF
   20201105 23:50:31    GOES17       IR   18.50  123.91  35.0    18.15  123.89     0.45      1.28   0.05    0.58  3.70  46.2 GIF
   20201106 00:20:31    GOES17   NearIR   18.49  123.97  35.0    18.34  124.13     0.44      1.26   0.40    0.48  3.78  12.7 GIF
   20201106 00:50:31    GOES17   NearIR   18.48  124.03  35.0    18.41  124.13     0.39      1.09   0.45    0.54  4.36  16.5 GIF
   20201106 01:20:31    GOES17   NearIR   18.47  124.08  35.0    18.42  124.14     0.28      0.78   0.40    0.74  6.09  34.6 GIF
   20201106 01:50:31    GOES17   NearIR   18.46  124.14  35.0    18.38  124.27     0.34      0.95   0.50    0.62  4.99  22.7 GIF
   20201106 02:20:31    SSMI15 85-92GHz   18.46  124.14  35.0    18.74  124.30     0.36      1.02    N/A    0.61  4.59   0.0 GIF
   20201106 02:50:31    SSMI15 85-92GHz   18.46  124.14  35.0    18.90  124.39     0.36      1.02    N/A    0.61  4.52   0.0 GIF
 
 
Key:

  - Date/Time: UTC time. If this observation is used in the track it is marked with a "*". If it is used for its own 30-minute window, it is put in bold.

  - Source/sensor: Satellite source of the analyzed image.

  - Vmax: Maximum winds listed in the forecast center analysis/forecast, *not* ARCHER.

  - ARCHER lat/lon: Coordinates of the ARCHER algorithm, valid at the time of the observation. If no center fix could be found, then it is "***".

  - Geo ref lat/lon: Coordinates of the ARCHER algorithm, valid at the time of the *nearest geo image*.

  - 50% cert. rad.: Radius of the circle (in degrees) that defines the area in which the ARCHER center of rotation is 50% certain. The lower the number, the more certain the position.

  - 95% cert. rad.: Radius of the circle (in degrees) that defines the area in which the ARCHER center of rotation is 95% certain.

  - Eye diam (deg): ARCHER-resolved eye diameter (in degrees). Green: robust, yellow: less certain, red: not robust.

  - % cert. of eye: Percent certainty that an eye exists in this image, determined by ARCHER. Currently only available for IR and 85-92 GHz imagery.

 
Links to related versions:
  - Track Plot
  - Summary table
  - Intensity Estimation