Tropical Depression 12W


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    .
   20200911 21:40:00    SSMI16 85-92GHz   31.41 -138.11  30.0    31.42 -137.75     0.37      1.04    N/A    0.58  4.42   0.0 GIF
   20200911 22:10:00    SSMI16 85-92GHz   31.41 -138.11  30.0    31.53 -137.75     0.37      1.04    N/A    0.58  4.33   0.0 GIF
   20200911 22:40:00    SSMI16 85-92GHz   31.41 -138.11  30.0    31.63 -137.76     0.37      1.04    N/A    0.58  4.23   0.0 GIF
   20200911 23:10:00    SSMI16 85-92GHz   31.41 -138.11  30.0    31.73 -137.77     0.37      1.04    N/A    0.58  4.13   0.0 GIF
   20200911 23:40:00  HIMAWARI      Vis   32.03 -138.15  30.0    32.00 -137.79     0.40      1.13   0.10    0.35  4.22  55.4 GIF
   20200912 00:00:00  HIMAWARI      Vis   32.09 -138.16  30.0    32.14 -137.81     0.32      0.90   0.40    0.42  5.29  68.8 GIF
   20200912 00:40:00  HIMAWARI      Vis   32.23 -138.20  30.0    32.35 -137.87     0.38      1.08   0.20    0.36  4.40  61.2 GIF
   20200912 01:10:00  HIMAWARI      Vis   32.33 -138.23  30.0    32.55 -137.90     0.26      0.74   0.25    0.50  6.41  74.0 GIF
   20200912 01:40:00  HIMAWARI      Vis   31.77 -138.63  25.0    31.70 -138.54     0.36      1.01   0.30    0.38  4.68  69.5 GIF
   20200912 02:10:00  HIMAWARI      Vis   31.86 -138.69  25.0    31.73 -138.58     0.31      0.88   0.30    0.43  5.36  73.4 GIF
   20200912 02:30:00  HIMAWARI      Vis   31.91 -138.74  25.0    31.99 -138.41     0.31      0.89   0.05    0.43  5.34  73.5 GIF
   20200912 03:10:00  HIMAWARI      Vis   32.03 -138.82  25.0    32.13 -138.53     0.29      0.81   0.10    0.46  5.87  75.9 GIF
   20200912 03:40:00  HIMAWARI      Vis   32.11 -138.88  25.0    32.19 -138.56     0.31      0.89   0.35    0.43  5.33  75.3 GIF
   20200912 04:10:00  HIMAWARI      Vis   32.20 -138.94  25.0    32.28 -138.71     0.40      1.12   0.40    0.35  4.24  65.0 GIF
   20200912 04:40:00  HIMAWARI      Vis   32.29 -139.00  25.0    32.46 -138.71     0.23      0.65   0.40    0.56  7.29  86.0 GIF
   20200912 05:10:00  HIMAWARI      Vis   32.37 -139.06  25.0    32.47 -138.79     0.22      0.62   0.45    0.58  7.60  78.8 GIF
   20200912 05:40:00  HIMAWARI      Vis   32.46 -139.12  25.0    32.54 -138.94     0.30      0.85   0.45    0.44  5.55  64.6 GIF
   20200912 06:10:00    SSMI16 85-92GHz   31.41 -138.11  30.0    32.35 -138.82     0.37      1.04    N/A    0.58  2.68   0.0 GIF
   20200912 06:40:00    SSMI16 85-92GHz   31.41 -138.11  30.0    32.45 -138.87     0.37      1.04    N/A    0.58  2.60   0.0 GIF
   20200912 07:10:00    SSMI16 85-92GHz   31.41 -138.11  30.0    32.55 -138.92     0.37      1.04    N/A    0.58  2.51   0.0 GIF
   20200912 07:40:00    SSMI16 85-92GHz   31.41 -138.11  30.0    32.63 -138.99     0.37      1.04    N/A    0.58  2.44   0.0 GIF
   20200912 08:10:00    SSMI16 85-92GHz   31.41 -138.11  30.0    32.73 -139.03     0.37      1.04    N/A    0.58  2.36   0.0 GIF
   20200912 08:40:00  HIMAWARI   NearIR   33.00 -139.47  25.0    32.77 -138.90     1.55      4.38   0.05    0.17  1.08   8.9 GIF
   20200912 09:10:00    SSMI16 85-92GHz   33.04 -139.50  25.0    32.84 -139.77     0.52      1.48    N/A    0.17  3.18   0.0 GIF
   20200912 09:40:00    SSMI16 85-92GHz   33.04 -139.50  25.0    32.93 -139.83     0.52      1.48    N/A    0.17  3.15   0.0 GIF
   20200912 10:10:00    SSMI16 85-92GHz   33.04 -139.50  25.0    33.02 -139.89     0.52      1.48    N/A    0.17  3.12   0.0 GIF
   20200912 10:40:00    SSMI16 85-92GHz   33.04 -139.50  25.0    33.11 -139.95     0.52      1.48    N/A    0.17  3.07   0.0 GIF
   20200912 11:10:00    SSMI16 85-92GHz   33.04 -139.50  25.0    33.20 -140.02     0.52      1.48    N/A    0.17  3.02   0.0 GIF
   20200912 11:40:00    SSMI16 85-92GHz   33.04 -139.50  25.0    33.29 -140.09     0.52      1.48    N/A    0.17  2.97   0.0 GIF
   20200912 12:10:00    SSMI16 85-92GHz   33.04 -139.50  25.0    33.39 -140.15     0.52      1.48    N/A    0.17  2.91   0.0 GIF
   20200912 12:40:00    SSMI16 85-92GHz   33.04 -139.50  25.0    33.47 -140.23     0.52      1.48    N/A    0.17  2.85   0.0 GIF
   20200912 13:10:00    SSMI16 85-92GHz   33.04 -139.50  25.0    33.57 -140.30     0.52      1.48    N/A    0.17  2.79   0.0 GIF
   20200912 13:40:00    SSMI16 85-92GHz   33.04 -139.50  25.0    33.66 -140.37     0.52      1.48    N/A    0.17  2.73   0.0 GIF
   20200912 14:10:00    SSMI16 85-92GHz   33.04 -139.50  25.0    33.75 -140.46     0.52      1.48    N/A    0.17  2.66   0.0 GIF
   20200912 14:30:00    SSMI16 85-92GHz   33.04 -139.50  25.0    33.81 -140.51     0.52      1.48    N/A    0.17  2.62   0.0 GIF
   20200912 15:10:00    SSMI16 85-92GHz   33.04 -139.50  25.0    33.92 -140.63     0.52      1.48    N/A    0.17  2.54   0.0 GIF
   20200912 15:40:00    SSMI16 85-92GHz   33.04 -139.50  25.0    34.02 -140.71     0.52      1.48    N/A    0.17  2.48   0.0 GIF
   20200912 16:10:00    SSMI16 85-92GHz   33.04 -139.50  25.0    34.12 -140.79     0.52      1.48    N/A    0.17  2.42   0.0 GIF
   20200912 16:40:00    SSMI16 85-92GHz   33.04 -139.50  25.0    34.20 -140.89     0.52      1.48    N/A    0.17  2.36   0.0 GIF
   20200912 17:10:00    SSMI16 85-92GHz   33.04 -139.50  25.0    34.30 -140.98     0.52      1.48    N/A    0.17  2.30   0.0 GIF
   20200912 17:40:00    SSMI16 85-92GHz   33.04 -139.50  25.0    34.38 -141.09     0.52      1.48    N/A    0.17  2.24   0.0 GIF
   20200912 18:10:00    SSMI16 85-92GHz   33.04 -139.50  25.0    34.48 -141.18     0.52      1.48    N/A    0.17  2.18   0.0 GIF
   20200912 18:40:00     AMSR2 85-92GHz   34.46 -140.69  25.0    35.20 -141.15     0.63      1.77    N/A    0.01  2.57   0.0 GIF
   20200912 19:10:00    SSMI15 85-92GHz   34.75 -141.03  25.0    34.83 -141.08     0.23      0.66    N/A    1.39  7.01   0.0 GIF
   20200912 19:40:00    SSMI15 85-92GHz   34.75 -141.03  25.0    34.92 -141.19     0.23      0.66    N/A    1.39  6.82   0.0 GIF
   20200912 20:10:00    SSMI15 85-92GHz   34.75 -141.03  25.0    35.01 -141.32     0.23      0.66    N/A    1.39  6.61   0.0 GIF
   20200912 20:40:00    SSMI15 85-92GHz   34.75 -141.03  25.0    35.09 -141.45     0.23      0.66    N/A    1.39  6.37   0.0 GIF
   20200912 21:10:00    SSMI15 85-92GHz   34.75 -141.03  25.0    35.18 -141.58     0.23      0.66    N/A    1.39  6.13   0.0 GIF
   20200912 21:40:00    SSMI15 85-92GHz   34.75 -141.03  25.0    35.27 -141.73     0.23      0.66    N/A    1.39  5.89   0.0 GIF
   20200912 22:10:00    SSMI15 85-92GHz   34.75 -141.03  25.0    35.36 -141.87     0.23      0.66    N/A    1.39  5.65   0.0 GIF
   20200912 22:40:00    SSMI15 85-92GHz   34.75 -141.03  25.0    35.44 -142.03     0.23      0.66    N/A    1.39  5.41   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