Tropical Depression 04B


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    .
   20211111 09:00:00  METEOSAT   NearIR   13.10  -80.60  35.0    12.95  -80.19     0.84      2.38   0.20    0.27  1.99  46.7 GIF
   20211111 09:00:00     AMSR2 85-92GHz   13.06  -80.72  35.0    12.65  -80.85     0.24      0.69    N/A    1.30  6.61   0.0 GIF
   20211111 10:00:00     AMSR2 85-92GHz   13.06  -80.72  35.0    12.68  -80.75     0.24      0.69    N/A    1.30  6.20   0.0 GIF
   20211111 10:15:00     AMSR2 85-92GHz   13.06  -80.72  35.0    12.69  -80.72     0.24      0.69    N/A    1.30  6.09   0.0 GIF
   20211111 11:00:00     AMSR2 85-92GHz   13.06  -80.72  35.0    12.71  -80.65     0.24      0.69    N/A    1.30  5.76   0.0 GIF
   20211111 11:15:00     AMSR2 85-92GHz   13.06  -80.72  35.0    12.72  -80.62     0.24      0.69    N/A    1.30  5.64   0.0 GIF
   20211111 12:00:00     AMSR2 85-92GHz   13.06  -80.72  35.0    12.74  -80.54     0.24      0.69    N/A    1.30  5.31   0.0 GIF
   20211111 12:15:00     AMSR2 85-92GHz   13.06  -80.72  35.0    12.75  -80.52     0.24      0.69    N/A    1.30  5.20   0.0 GIF
   20211111 13:00:00     AMSR2 85-92GHz   13.06  -80.72  35.0    12.64  -80.18     0.24      0.69    N/A    1.30  4.88   0.0 GIF
   20211111 13:15:00     AMSR2 85-92GHz   13.06  -80.72  35.0    12.64  -80.17     0.24      0.69    N/A    1.30  4.77   0.0 GIF
   20211111 14:00:00     AMSR2 85-92GHz   13.06  -80.72  35.0    12.64  -80.12     0.24      0.69    N/A    1.30  4.48   0.0 GIF
   20211111 14:15:00     AMSR2 85-92GHz   13.06  -80.72  35.0    12.64  -80.10     0.24      0.69    N/A    1.30  4.38   0.0 GIF
   20211111 15:00:00     AMSR2 85-92GHz   13.06  -80.72  35.0    12.64  -80.05     0.24      0.69    N/A    1.30  4.11   0.0 GIF
   20211111 15:15:00     AMSR2 85-92GHz   13.06  -80.72  35.0    12.64  -80.03     0.24      0.69    N/A    1.30  4.02   0.0 GIF
   20211111 16:00:00  METEOSAT       IR   13.11  -79.73  30.0    12.69  -81.63     0.43      1.22   0.15    0.60  3.88  69.5 GIF
   20211111 16:15:00     AMSR2 85-92GHz   13.06  -80.72  35.0    12.66  -79.97     0.24      0.69    N/A    1.30  3.70   0.0 GIF
   20211111 17:00:00     AMSR2 85-92GHz   13.06  -80.72  35.0    12.66  -79.91     0.24      0.69    N/A    1.30  3.48   0.0 GIF
   20211111 17:15:00     AMSR2 85-92GHz   13.06  -80.72  35.0    12.66  -79.90     0.24      0.69    N/A    1.30  3.41   0.0 GIF
   20211111 18:00:00     AMSR2 85-92GHz   13.06  -80.72  35.0    12.68  -79.85     0.24      0.69    N/A    1.30  3.21   0.0 GIF
   20211111 18:15:00    SSMI18 85-92GHz   13.17  -80.37  35.0    12.84  -79.53     0.37      1.06    N/A    0.57  3.15   0.0 GIF
   20211111 19:00:00    SSMI18 85-92GHz   13.17  -80.37  35.0    12.85  -79.48     0.37      1.06    N/A    0.57  3.00   0.0 GIF
   20211111 19:15:00    SSMI18 85-92GHz   13.17  -80.37  35.0    12.87  -79.46     0.37      1.06    N/A    0.57  2.95   0.0 GIF
   20211111 20:00:00    SSMI18 85-92GHz   13.17  -80.37  35.0    12.88  -79.41     0.37      1.06    N/A    0.57  2.81   0.0 GIF
   20211111 20:15:00    SSMI18 85-92GHz   13.17  -80.37  35.0    12.88  -79.39     0.37      1.06    N/A    0.57  2.77   0.0 GIF
   20211111 21:00:00    SSMI18 85-92GHz   13.17  -80.37  35.0    12.90  -79.34     0.37      1.06    N/A    0.57  2.64   0.0 GIF
   20211111 21:15:00    SSMI18 85-92GHz   13.17  -80.37  35.0    12.92  -79.33     0.37      1.06    N/A    0.57  2.60   0.0 GIF
   20211111 22:00:00     AMSR2 85-92GHz   13.19  -79.45  30.0    13.34  -79.33     0.34      0.95    N/A    0.71  4.65   0.0 GIF
   20211111 22:15:00     AMSR2 85-92GHz   13.19  -79.45  30.0    13.35  -79.31     0.34      0.95    N/A    0.71  4.59   0.0 GIF
   20211111 23:00:00     AMSR2 85-92GHz   13.19  -79.45  30.0    13.37  -79.26     0.34      0.95    N/A    0.71  4.40   0.0 GIF
   20211111 23:15:00     AMSR2 85-92GHz   13.19  -79.45  30.0    13.38  -79.25     0.34      0.95    N/A    0.71  4.34   0.0 GIF
   20211112 00:00:00     AMSR2 85-92GHz   13.19  -79.45  30.0    13.40  -79.20     0.34      0.95    N/A    0.71  4.14   0.0 GIF
   20211112 00:15:00     AMSR2 85-92GHz   13.19  -79.45  30.0    13.41  -79.18     0.34      0.95    N/A    0.71  4.08   0.0 GIF
   20211112 01:00:00     AMSR2 85-92GHz   13.19  -79.45  30.0    13.43  -79.14     0.34      0.95    N/A    0.71  3.88   0.0 GIF
   20211112 01:15:00     AMSR2 85-92GHz   13.19  -79.45  30.0    13.43  -79.12     0.34      0.95    N/A    0.71  3.82   0.0 GIF
   20211112 02:00:00     AMSR2 85-92GHz   13.19  -79.45  30.0    13.45  -79.07     0.34      0.95    N/A    0.71  3.63   0.0 GIF
   20211112 02:15:00     AMSR2 85-92GHz   13.19  -79.45  30.0    13.46  -79.06     0.34      0.95    N/A    0.71  3.57   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