Tropical Depression 21S


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    .
   20200311 08:40:00  HIMAWARI       IR  -16.73 -116.68  35.0   -17.08 -116.89     0.19      0.52   0.05    1.12  9.05 100.0 GIF
   20200311 09:10:00    SSMI16 85-92GHz  -16.84 -116.64  35.0    69.11  141.28     0.21      0.60    N/A    1.62  7.81   0.0 GIF
   20200311 09:40:00    SSMI16 85-92GHz  -16.84 -116.64  35.0    69.11  141.28     0.21      0.60    N/A    1.62  7.60   0.0 GIF
   20200311 10:10:00    SSMI16 85-92GHz  -16.84 -116.64  35.0    69.11  141.28     0.21      0.60    N/A    1.62  7.36   0.0 GIF
   20200311 10:40:00    SSMI16 85-92GHz  -16.84 -116.64  35.0    69.11  141.28     0.21      0.60    N/A    1.62  7.09   0.0 GIF
   20200311 11:10:00    SSMI16 85-92GHz  -16.84 -116.64  35.0    69.11  141.28     0.21      0.60    N/A    1.62  6.81   0.0 GIF
   20200311 11:40:00    SSMI16 85-92GHz  -16.84 -116.64  35.0    69.11  141.28     0.21      0.60    N/A    1.62  6.52   0.0 GIF
   20200311 12:10:00  HIMAWARI   NearIR  -17.38 -116.33  35.0   -17.93 -116.33     0.25      0.71   0.05    0.81  6.68  95.9 GIF
   20200311 12:40:00    SSMI16 85-92GHz  -16.84 -116.64  35.0    69.11  141.28     0.21      0.60    N/A    1.62  5.96   0.0 GIF
   20200311 13:10:00    SSMI16 85-92GHz  -16.84 -116.64  35.0    69.11  141.28     0.21      0.60    N/A    1.62  5.68   0.0 GIF
   20200311 13:40:00    SSMI16 85-92GHz  -16.84 -116.64  35.0    69.11  141.28     0.21      0.60    N/A    1.62  5.42   0.0 GIF
   20200311 14:10:00  HIMAWARI   NearIR  -17.94 -116.45  35.0   -16.19 -116.34     3.36      9.49    N/A    0.00  0.50   0.0 GIF
   20200311 14:30:00  HIMAWARI   NearIR  -17.99 -116.42  35.0   -18.49 -116.45     0.21      0.61   0.05    0.94  7.82 100.0 GIF
   20200311 15:10:00  HIMAWARI       IR  -18.02 -116.39  35.0   -18.80 -116.47     0.20      0.56   0.05    1.07  8.47 100.0 GIF
   20200311 15:30:00  HIMAWARI       IR  -18.07 -116.36  35.0   -18.67 -116.63     0.31      0.89   0.05    0.75  5.35  90.2 GIF
   20200311 16:00:00    SSMI16 85-92GHz  -16.84 -116.64  35.0    68.25  142.79     0.21      0.60    N/A    1.62  4.36   0.0 GIF
   20200311 16:30:00  HIMAWARI   NearIR  -18.22 -116.29  35.0   -19.00 -116.53     0.22      0.63   0.05    0.91  7.50 100.0 GIF
   20200311 17:10:00  HIMAWARI   NearIR  -18.32 -116.24  35.0   -18.92 -116.24     0.15      0.42   0.05    1.34 11.25 100.0 GIF
   20200311 17:30:00  HIMAWARI       IR  -18.37 -116.22  35.0   -18.92 -116.35     0.20      0.58   0.05    1.04  8.21 100.0 GIF
   20200311 18:00:00  HIMAWARI       IR  -18.45 -116.18  35.0   -18.95 -116.44     0.39      1.11   0.05    0.64  4.26  97.2 GIF
   20200311 18:40:00  HIMAWARI       IR  -18.56 -116.13  35.0   -19.16 -116.49     0.40      1.12   0.10    0.64  4.24  97.7 GIF
   20200311 19:00:00    SSMI16 85-92GHz  -16.84 -116.64  35.0    68.25  142.79     0.21      0.60    N/A    1.62  3.36   0.0 GIF
   20200311 19:30:00    SSMI16 85-92GHz  -16.84 -116.64  35.0    68.25  142.79     0.21      0.60    N/A    1.62  3.22   0.0 GIF
   20200311 20:10:00    SSMI16 85-92GHz  -16.84 -116.64  35.0    68.31  143.38     0.21      0.60    N/A    1.62  3.05   0.0 GIF
   20200311 20:30:00    SSMI16 85-92GHz  -16.84 -116.64  35.0    68.31  143.38     0.21      0.60    N/A    1.62  2.97   0.0 GIF
   20200311 21:00:00    SSMI16 85-92GHz  -16.84 -116.64  35.0    68.31  143.38     0.21      0.60    N/A    1.62  2.86   0.0 GIF
   20200311 21:30:00    SSMI16 85-92GHz  -16.84 -116.64  35.0    68.31  143.38     0.21      0.60    N/A    1.62  2.75   0.0 GIF
   20200311 22:00:00    SSMI16 85-92GHz  -16.84 -116.64  35.0    68.31  143.38     0.21      0.60    N/A    1.62  2.65   0.0 GIF
   20200311 22:30:00    SSMI18 85-92GHz  -19.03 -115.64  35.0    68.64  146.92     0.64      1.80    N/A    0.00  2.61   0.0 GIF
   20200311 23:00:00    SSMI18 85-92GHz  -19.03 -115.64  35.0    68.64  146.92     0.64      1.80    N/A    0.00  2.58   0.0 GIF
   20200311 23:30:00    SSMI18 85-92GHz  -19.03 -115.64  35.0    68.64  146.92     0.64      1.80    N/A    0.00  2.55   0.0 GIF
   20200312 00:00:00  HIMAWARI      Vis  -19.38 -115.47  35.0   -19.48 -115.31     0.24      0.67   0.25    0.55  7.13  79.9 GIF
   20200312 00:30:00  HIMAWARI      Vis  -19.46 -115.43  35.0   -19.56 -115.30     0.39      1.10   0.30    0.36  4.33  72.8 GIF
   20200312 01:00:00  HIMAWARI      Vis  -19.54 -115.40  35.0   -19.59 -115.45     0.38      1.09   0.30    0.36  4.37  73.2 GIF
   20200312 01:30:00  HIMAWARI      Vis  -19.62 -115.36  35.0   -19.72 -115.20     0.57      1.61   0.15    0.26  2.94  62.6 GIF
   20200312 02:00:00  HIMAWARI      Vis  -19.70 -115.32  35.0   -19.65 -115.16     0.32      0.90   0.10    0.42  5.28  76.1 GIF
   20200312 02:20:00  HIMAWARI      Vis  -19.75 -115.29  35.0   -19.85 -115.26     0.51      1.45   0.15    0.28  3.26  62.7 GIF
   20200312 03:00:00  HIMAWARI      Vis  -19.85 -115.24  35.0   -20.08 -115.16     0.20      0.56   0.10    0.64  8.48 100.0 GIF
   20200312 03:30:00  HIMAWARI       IR  -19.93 -115.20  35.0   -21.08 -116.07     0.25      0.72   0.05    0.88  6.59  84.2 GIF
   20200312 04:00:00  HIMAWARI       IR  -20.00 -115.16  35.0   -21.15 -116.25     0.26      0.75   0.05    0.85  6.34  99.4 GIF
   20200312 04:30:00  HIMAWARI      Vis  -20.08 -115.12  35.0   -19.98 -115.01     0.15      0.43   0.05    0.82 10.96  99.6 GIF
   20200312 05:00:00  HIMAWARI      Vis  -20.15 -115.08  35.0   -20.03 -115.00     0.11      0.31   0.10    1.10 15.11 100.0 GIF
   20200312 05:40:00  HIMAWARI      Vis  -20.25 -115.03  35.0   -20.15 -114.89     0.12      0.33   0.10    1.04 14.21 100.0 GIF
   20200312 06:00:00  HIMAWARI      Vis  -20.30 -115.00  35.0   -20.20 -114.87     0.12      0.34   0.05    1.04 14.16 100.0 GIF
   20200312 06:30:00  HIMAWARI      Vis  -20.37 -114.96  35.0   -20.35 -114.85     0.11      0.31   0.45    1.10 15.09 100.0 GIF
   20200312 07:10:00  HIMAWARI      Vis  -20.47 -114.91  35.0   -20.42 -114.80     0.12      0.33   0.05    1.04 14.21 100.0 GIF
   20200312 07:30:00  HIMAWARI      Vis  -20.52 -114.89  35.0   -20.52 -114.81     0.18      0.50   0.05    0.72  9.58  97.7 GIF
   20200312 08:10:00  HIMAWARI      Vis  -20.61 -114.84  35.0   -20.69 -114.86     0.18      0.50   0.15    0.72  9.51  81.4 GIF
   20200312 08:40:00  HIMAWARI      Vis  -20.69 -114.80  35.0   -20.71 -114.80     0.21      0.60   0.35    0.61  7.94  76.0 GIF
   20200312 09:00:00  HIMAWARI       IR  -20.73 -114.77  35.0   -20.96 -115.33     0.44      1.24   0.05    0.60  3.84  69.4 GIF
   20200312 09:40:00  HIMAWARI       IR  -20.83 -114.73  35.0   -21.18 -115.37     0.35      0.99   0.05    0.69  4.79  75.2 GIF
   20200312 10:00:00    SSMI18 85-92GHz  -20.87 -114.70  35.0    68.85  147.89     0.13      0.37    N/A    3.16 12.99   0.0 GIF
   20200312 10:40:00    SSMI18 85-92GHz  -20.87 -114.70  35.0    68.85  147.89     0.13      0.37    N/A    3.16 12.51   0.0 GIF
   20200312 11:10:00    SSMI18 85-92GHz  -20.87 -114.70  35.0    68.85  147.89     0.13      0.37    N/A    3.16 11.95   0.0 GIF
   20200312 11:40:00    SSMI18 85-92GHz  -20.87 -114.70  35.0    68.85  147.89     0.13      0.37    N/A    3.16 11.32   0.0 GIF
   20200312 12:10:00    SSMI18 85-92GHz  -20.87 -114.70  35.0    68.85  147.89     0.13      0.37    N/A    3.16 10.67   0.0 GIF
   20200312 12:40:00    SSMI18 85-92GHz  -20.87 -114.70  35.0    68.85  147.89     0.13      0.37    N/A    3.16 10.03   0.0 GIF
   20200312 13:10:00    SSMI18 85-92GHz  -20.87 -114.70  35.0    68.85  147.89     0.13      0.37    N/A    3.16  9.40   0.0 GIF
   20200312 13:40:00    SSMI18 85-92GHz  -20.87 -114.70  35.0    68.85  147.89     0.13      0.37    N/A    3.16  8.81   0.0 GIF
   20200312 14:10:00  HIMAWARI   NearIR  -21.46 -114.42  35.0   -21.46 -114.42     3.36      9.49    N/A    0.00  0.50   0.0 GIF
   20200312 14:30:00  HIMAWARI   NearIR  -21.51 -114.40  35.0   -21.78 -114.99     0.17      0.49   0.05    1.16  9.71 100.0 GIF
   20200312 15:10:00    SSMI18 85-92GHz  -20.87 -114.70  35.0    68.85  147.89     0.13      0.37    N/A    3.16  7.25   0.0 GIF
   20200312 15:40:00    SSMI18 85-92GHz  -20.87 -114.70  35.0    68.85  147.89     0.13      0.37    N/A    3.16  6.81   0.0 GIF
   20200312 16:00:00    SSMI18 85-92GHz  -20.87 -114.70  35.0    68.85  147.89     0.13      0.37    N/A    3.16  6.53   0.0 GIF
   20200312 16:30:00    SSMI18 85-92GHz  -20.87 -114.70  35.0    68.85  147.89     0.13      0.37    N/A    3.16  6.15   0.0 GIF
   20200312 17:00:00  HIMAWARI   NearIR  -21.86 -114.26  35.0   -21.96 -114.47     0.22      0.62   0.05    0.92  7.63 100.0 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