Tropical Depression 21W
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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 .
20210922 15:40:00 HIMAWARI NearIR 12.93 -112.69 25.0 12.93 -112.90 0.55 1.57 0.05 0.39 3.02 84.8 GIF
20210922 16:10:00 HIMAWARI NearIR 12.95 -112.62 25.0 12.10 -112.64 1.16 3.29 0.15 0.21 1.44 55.4 GIF
20210922 16:40:00 HIMAWARI NearIR 12.97 -112.54 25.0 12.27 -112.98 0.38 1.07 0.10 0.55 4.45 81.4 GIF
20210922 17:20:00 HIMAWARI IR 13.00 -112.44 25.0 11.57 -112.23 0.82 2.33 0.10 0.42 2.04 77.1 GIF
20210922 17:40:00 HIMAWARI IR 13.01 -112.39 25.0 11.59 -112.21 3.36 9.49 0.10 0.09 0.50 43.3 GIF
20210922 18:20:00 HIMAWARI NearIR 13.05 -112.28 25.0 12.95 -113.36 1.84 5.21 0.05 0.15 0.91 53.1 GIF
20210922 18:40:00 HIMAWARI NearIR 13.06 -112.23 25.0 13.56 -111.70 0.92 2.61 0.05 0.25 1.82 76.2 GIF
20210922 19:10:00 HIMAWARI NearIR 13.09 -112.16 25.0 11.26 -111.85 0.90 2.54 0.05 0.26 1.87 71.7 GIF
20210922 19:40:00 HIMAWARI IR 13.12 -112.08 25.0 11.64 -112.52 2.90 8.21 0.15 0.27 0.58 62.4 GIF
20210922 20:10:00 AMSR2 85-92GHz 13.07 -112.29 25.0 13.72 -112.30 0.59 1.65 N/A 0.07 2.78 0.0 GIF
20210922 20:50:20 AMSR2 85-92GHz 13.07 -112.29 25.0 13.78 -112.18 0.59 1.65 N/A 0.07 2.73 0.0 GIF
20210922 21:10:00 HIMAWARI NearIR 13.31 -111.87 25.0 13.11 -111.31 0.48 1.37 0.05 0.44 3.47 100.0 GIF
20210922 21:40:00 SSMI18 85-92GHz 13.35 -111.81 25.0 13.86 -112.36 0.13 0.36 N/A 3.21 13.12 0.0 GIF
20210922 22:10:00 SSMI18 85-92GHz 13.35 -111.81 25.0 13.90 -112.28 0.13 0.36 N/A 3.21 12.73 0.0 GIF
20210922 22:40:00 SSMI18 85-92GHz 13.35 -111.81 25.0 13.94 -112.20 0.13 0.36 N/A 3.21 12.17 0.0 GIF
20210922 23:10:00 SSMI18 85-92GHz 13.35 -111.81 25.0 13.98 -112.11 0.13 0.36 N/A 3.21 11.53 0.0 GIF
20210922 23:50:00 SSMI18 85-92GHz 13.35 -111.81 25.0 14.03 -112.00 0.13 0.36 N/A 3.21 10.65 0.0 GIF
20210923 00:20:00 SSMI18 85-92GHz 13.35 -111.81 25.0 14.07 -111.92 0.13 0.36 N/A 3.21 10.00 0.0 GIF
20210923 00:50:00 SSMI18 85-92GHz 13.35 -111.81 25.0 14.11 -111.84 0.13 0.36 N/A 3.21 9.37 0.0 GIF
20210923 01:20:00 SSMI18 85-92GHz 13.35 -111.81 25.0 14.14 -111.76 0.13 0.36 N/A 3.21 8.77 0.0 GIF
20210923 01:50:00 SSMI18 85-92GHz 13.35 -111.81 25.0 14.18 -111.67 0.13 0.36 N/A 3.21 8.21 0.0 GIF
20210923 02:20:00 SSMI18 85-92GHz 13.35 -111.81 25.0 14.22 -111.37 0.13 0.36 N/A 3.21 7.69 0.0 GIF
20210923 02:50:00 SSMI18 85-92GHz 13.35 -111.81 25.0 14.27 -111.29 0.13 0.36 N/A 3.21 7.21 0.0 GIF
20210923 03:20:00 SSMI18 85-92GHz 13.35 -111.81 25.0 14.33 -111.21 0.13 0.36 N/A 3.21 6.77 0.0 GIF
20210923 03:40:00 HIMAWARI Vis 13.86 -110.59 30.0 13.46 -110.64 0.25 0.72 0.05 0.51 6.60 58.6 GIF
20210923 04:20:00 SSMI18 85-92GHz 13.35 -111.81 25.0 14.42 -111.05 0.13 0.36 N/A 3.21 5.99 0.0 GIF
20210923 04:40:00 SSMI18 85-92GHz 13.35 -111.81 25.0 14.45 -110.99 0.13 0.36 N/A 3.21 5.75 0.0 GIF
20210923 05:20:00 SSMI18 85-92GHz 13.35 -111.81 25.0 14.49 -110.87 0.13 0.36 N/A 3.21 5.32 0.0 GIF
20210923 05:50:00 SSMI18 85-92GHz 13.35 -111.81 25.0 14.56 -110.80 0.13 0.36 N/A 3.21 5.03 0.0 GIF
20210923 06:10:00 SSMI18 85-92GHz 13.35 -111.81 25.0 14.58 -110.74 0.13 0.36 N/A 3.21 4.85 0.0 GIF
20210923 06:40:00 HIMAWARI Vis 14.14 -110.10 30.0 13.81 -110.26 0.19 0.55 0.05 0.66 8.68 53.6 GIF
20210923 07:20:00 SSMI18 85-92GHz 13.35 -111.81 25.0 14.67 -110.55 0.13 0.36 N/A 3.21 4.28 0.0 GIF
20210923 07:50:00 HIMAWARI Vis 14.24 -109.91 30.0 13.89 -109.86 0.23 0.65 0.05 0.57 7.34 50.9 GIF
20210923 08:10:00 HIMAWARI Vis 14.27 -109.86 30.0 13.92 -109.91 0.28 0.80 0.30 0.47 5.90 48.2 GIF
20210923 08:40:00 SSMI18 85-92GHz 13.35 -111.81 25.0 14.81 -110.33 0.13 0.36 N/A 3.21 3.75 0.0 GIF
20210923 09:10:00 SSMI18 85-92GHz 13.35 -111.81 25.0 14.85 -110.25 0.13 0.36 N/A 3.21 3.57 0.0 GIF
20210923 09:40:00 HIMAWARI NearIR 14.67 -109.58 35.0 14.87 -109.22 0.54 1.53 0.05 0.40 3.11 48.1 GIF
20210923 10:10:00 SSMI18 85-92GHz 14.67 -109.58 35.0 15.56 -109.03 0.28 0.79 N/A 1.03 5.95 0.0 GIF
20210923 10:40:00 SSMI18 85-92GHz 14.67 -109.58 35.0 15.61 -108.94 0.28 0.79 N/A 1.03 5.84 0.0 GIF
20210923 11:10:00 HIMAWARI NearIR 14.81 -109.32 35.0 14.31 -108.31 0.16 0.45 0.05 1.25 10.45 100.0 GIF
20210923 11:40:00 HIMAWARI NearIR 14.86 -109.23 35.0 14.86 -108.37 0.28 0.80 0.05 0.72 5.90 100.0 GIF
20210923 12:10:00 HIMAWARI NearIR 14.91 -109.14 35.0 15.23 -108.31 0.18 0.50 0.05 1.14 9.50 100.0 GIF
20210923 12:40:00 SSMI17 85-92GHz 14.86 -109.23 35.0 15.61 -108.63 0.19 0.55 N/A 1.85 8.31 0.0 GIF
20210923 13:10:00 SSMI17 85-92GHz 14.86 -109.23 35.0 15.65 -108.54 0.19 0.55 N/A 1.85 8.02 0.0 GIF
20210923 13:40:00 SSMI17 85-92GHz 14.86 -109.23 35.0 15.69 -108.44 0.19 0.55 N/A 1.85 7.70 0.0 GIF
20210923 14:10:00 HIMAWARI NearIR 15.09 -108.76 35.0 15.07 -107.85 0.23 0.64 0.05 0.89 7.39 100.0 GIF
20210923 14:30:00 HIMAWARI NearIR 15.12 -108.70 35.0 15.30 -107.30 0.17 0.49 0.05 1.16 9.71 100.0 GIF
20210923 15:10:00 SSMI17 85-92GHz 14.86 -109.23 35.0 16.05 -107.84 0.19 0.55 N/A 1.85 6.71 0.0 GIF
20210923 15:40:00 SSMI17 85-92GHz 14.86 -109.23 35.0 16.08 -107.74 0.19 0.55 N/A 1.85 6.39 0.0 GIF
20210923 16:00:00 SSMI17 85-92GHz 14.86 -109.23 35.0 16.12 -107.68 0.19 0.55 N/A 1.85 6.18 0.0 GIF
20210923 16:40:00 HIMAWARI NearIR 15.53 -107.96 35.0 15.33 -107.62 0.22 0.62 0.05 0.93 7.71 100.0 GIF
20210923 17:10:00 SSMI17 85-92GHz 14.86 -109.23 35.0 16.21 -107.44 0.19 0.55 N/A 1.85 5.50 0.0 GIF
20210923 17:50:00 HIMAWARI NearIR 15.62 -107.72 35.0 14.97 -106.86 0.13 0.37 0.05 1.53 12.91 100.0 GIF
20210923 18:10:00 SSMI17 85-92GHz 14.86 -109.23 35.0 16.29 -107.22 0.19 0.55 N/A 1.85 4.98 0.0 GIF
20210923 18:40:00 HIMAWARI NearIR 15.69 -107.54 35.0 14.94 -106.71 0.24 0.68 0.05 0.84 6.94 100.0 GIF
20210923 19:10:00 SSMI17 85-92GHz 14.86 -109.23 35.0 16.35 -107.00 0.19 0.55 N/A 1.85 4.52 0.0 GIF
20210923 19:40:00 SSMI17 85-92GHz 14.86 -109.23 35.0 16.40 -106.90 0.19 0.55 N/A 1.85 4.31 0.0 GIF
20210923 20:10:00 SSMI17 85-92GHz 14.86 -109.23 35.0 16.45 -106.80 0.19 0.55 N/A 1.85 4.12 0.0 GIF
20210923 20:40:00 SSMI17 85-92GHz 14.86 -109.23 35.0 16.49 -106.69 0.19 0.55 N/A 1.85 3.93 0.0 GIF
20210923 21:10:00 SSMI17 85-92GHz 14.86 -109.23 35.0 16.54 -106.59 0.19 0.55 N/A 1.85 3.76 0.0 GIF
20210923 21:40:00 SSMI17 85-92GHz 14.86 -109.23 35.0 16.55 -106.47 0.19 0.55 N/A 1.85 3.59 0.0 GIF
20210923 22:10:00 SSMI17 85-92GHz 14.86 -109.23 35.0 16.59 -106.36 0.19 0.55 N/A 1.85 3.44 0.0 GIF
20210923 22:40:00 SSMI17 85-92GHz 14.86 -109.23 35.0 16.64 -106.26 0.19 0.55 N/A 1.85 3.30 0.0 GIF
20210923 23:10:00 SSMI17 85-92GHz 14.86 -109.23 35.0 16.68 -106.15 0.19 0.55 N/A 1.85 3.16 0.0 GIF
20210923 23:40:00 SSMI16 85-92GHz 16.05 -106.54 35.0 16.43 -106.58 0.22 0.63 N/A 1.51 7.53 0.0 GIF
20210924 00:10:00 SSMI16 85-92GHz 16.05 -106.54 35.0 16.46 -106.47 0.22 0.63 N/A 1.51 7.37 0.0 GIF
20210924 00:40:00 SSMI16 85-92GHz 16.05 -106.54 35.0 16.49 -106.36 0.22 0.63 N/A 1.51 7.16 0.0 GIF
20210924 01:10:00 SSMI16 85-92GHz 16.05 -106.54 35.0 16.52 -106.26 0.22 0.63 N/A 1.51 6.92 0.0 GIF
20210924 01:40:00 SSMI16 85-92GHz 16.05 -106.54 35.0 16.55 -106.15 0.22 0.63 N/A 1.51 6.66 0.0 GIF
20210924 02:10:00 SSMI16 85-92GHz 16.05 -106.54 35.0 16.58 -106.04 0.22 0.63 N/A 1.51 6.40 0.0 GIF
20210924 02:30:00 SSMI16 85-92GHz 16.05 -106.54 35.0 16.59 -105.96 0.22 0.63 N/A 1.51 6.22 0.0 GIF
20210924 03:10:00 HIMAWARI Vis 16.28 -105.71 35.0 16.63 -105.82 0.21 0.58 0.05 0.62 8.14 82.0 GIF
20210924 03:40:00 HIMAWARI Vis 16.30 -105.60 35.0 16.75 -105.63 0.21 0.58 0.05 0.62 8.12 77.2 GIF
20210924 04:00:00 HIMAWARI Vis 16.31 -105.53 35.0 16.71 -105.50 0.18 0.51 0.10 0.70 9.28 78.5 GIF
20210924 04:40:00 HIMAWARI Vis 16.33 -105.39 35.0 16.63 -105.33 0.27 0.75 0.05 0.49 6.30 73.1 GIF
20210924 05:20:00 SSMI16 85-92GHz 16.05 -106.54 35.0 16.69 -105.34 0.22 0.63 N/A 1.51 4.83 0.0 GIF
20210924 05:40:00 SSMI16 85-92GHz 16.05 -106.54 35.0 16.70 -105.27 0.22 0.63 N/A 1.51 4.68 0.0 GIF
20210924 06:10:00 HIMAWARI Vis 16.37 -105.06 35.0 16.62 -104.88 0.22 0.61 0.05 0.60 7.80 64.7 GIF
20210924 06:40:00 HIMAWARI Vis 16.37 -104.95 35.0 16.60 -104.90 0.25 0.72 0.05 0.51 6.60 64.6 GIF
20210924 07:10:00 AMSR2 85-92GHz 16.37 -105.05 35.0 16.57 -104.89 0.37 1.05 N/A 0.57 4.40 0.0 GIF
20210924 07:40:00 AMSR2 85-92GHz 16.37 -105.05 35.0 16.57 -104.78 0.37 1.05 N/A 0.57 4.32 0.0 GIF
20210924 08:10:00 HIMAWARI IR 16.37 -104.62 35.0 14.87 -103.76 0.26 0.74 0.05 0.86 6.45 99.0 GIF
20210924 08:40:00 AMSR2 85-92GHz 16.37 -105.05 35.0 16.55 -104.57 0.37 1.05 N/A 0.57 4.13 0.0 GIF
20210924 09:10:00 AMSR2 85-92GHz 16.37 -105.05 35.0 16.54 -104.46 0.37 1.05 N/A 0.57 4.03 0.0 GIF
20210924 09:40:00 HIMAWARI IR 16.33 -104.30 35.0 15.20 -103.18 0.21 0.60 0.10 1.02 7.97 96.1 GIF
20210924 10:10:00 SSMI18 85-92GHz 16.34 -104.34 35.0 16.41 -105.28 0.25 0.72 N/A 1.21 6.47 0.0 GIF
20210924 10:40:00 SSMI18 85-92GHz 16.34 -104.34 35.0 16.38 -105.18 0.25 0.72 N/A 1.21 6.32 0.0 GIF
20210924 11:10:00 SSMI18 85-92GHz 16.34 -104.34 35.0 16.35 -105.07 0.25 0.72 N/A 1.21 6.14 0.0 GIF
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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.
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Links to related versions: - Track Plot - Summary table - Intensity Estimation |
