Tropical Depression 31S
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ARCHER-V2 Auto-positioning Information Advanced Dvorak Technique (ADT) Version 9.1 |
-------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 .
20250422 01:20:00 HIMAWARI IR -10.40 134.35 30.0 -9.75 132.87 1.53 0.20 0.54 0.52 3.09 2.5 PNG
20250422 01:50:00 HIMAWARI Vis -10.33 133.83 30.0 -9.93 132.66 0.91 0.20 N/A 0.42 5.22 0.0 PNG
20250422 02:20:00 HIMAWARI Vis -10.32 133.76 30.0 -9.77 132.65 0.69 0.10 N/A 0.53 6.87 0.0 PNG
20250422 02:50:00 HIMAWARI Vis -10.30 133.70 30.0 -9.75 132.53 0.49 0.30 N/A 0.73 9.73 0.0 PNG
20250422 03:30:00 HIMAWARI Vis -10.28 133.63 30.0 -9.78 132.56 0.71 0.45 N/A 0.52 6.69 0.0 PNG
20250422 03:50:00 HIMAWARI Vis -10.26 133.57 30.0 -9.66 132.50 1.32 0.05 N/A 0.31 3.59 0.0 PNG
20250422 04:20:00 HIMAWARI Vis -10.25 133.50 30.0 -10.52 133.58 2.14 0.35 N/A 0.21 2.22 0.0 PNG
20250422 05:00:00 HIMAWARI Vis -10.22 133.44 30.0 -10.42 133.29 0.71 0.50 N/A 0.52 6.65 0.0 PNG
20250422 05:20:00 HIMAWARI Vis -10.20 133.38 30.0 -10.25 133.28 0.89 0.45 N/A 0.43 5.31 0.0 PNG
20250422 06:00:00 AMSR2 89GHz -10.18 133.32 30.0 -10.43 133.47 0.69 0.10 0.24 1.30 6.89 54.3 PNG
20250422 06:20:00 HIMAWARI Vis -10.15 133.26 30.0 -10.15 132.60 0.71 0.15 N/A 0.52 6.68 0.0 PNG
20250422 06:50:00 HIMAWARI Vis -10.13 133.20 30.0 -10.08 132.41 0.61 0.15 N/A 0.60 7.77 0.0 PNG
20250422 07:30:00 AMSR2 89GHz -10.18 133.32 30.0 -10.32 133.33 0.69 0.10 0.24 1.30 6.08 54.3 PNG
20250422 07:50:00 AMSR2 89GHz -10.18 133.32 30.0 -10.43 133.91 0.69 0.10 0.24 1.30 5.93 54.3 PNG
20250422 08:20:00 AMSR2 89GHz -10.18 133.32 30.0 -10.40 133.84 0.69 0.10 0.24 1.30 5.70 54.3 PNG
20250422 09:00:00 AMSR2 89GHz -10.18 133.32 30.0 -10.28 133.67 0.69 0.10 0.24 1.30 5.40 54.3 PNG
20250422 09:30:00 SSMISF16 89GHz -10.09 133.56 30.0 -10.29 133.31 0.60 0.55 0.21 1.59 7.85 7.3 PNG
20250422 09:50:00 SSMISF16 89GHz -10.09 133.56 30.0 -10.17 133.15 0.60 0.55 0.21 1.59 7.73 7.3 PNG
20250422 10:20:00 SSMISF17 89GHz -10.04 133.44 30.0 -10.09 133.34 0.57 0.40 0.20 1.76 8.39 12.4 PNG
20250422 10:50:00 SSMISF17 89GHz -10.04 133.44 30.0 -9.96 133.16 0.57 0.40 0.20 1.76 8.03 12.4 PNG
20250422 11:20:00 SSMISF17 89GHz -10.04 133.44 30.0 -9.93 133.10 0.57 0.40 0.20 1.76 7.76 12.4 PNG
20250422 11:50:00 SSMISF17 89GHz -10.04 133.44 30.0 -9.90 133.04 0.57 0.40 0.20 1.76 7.46 12.4 PNG
20250422 12:20:00 SSMISF17 89GHz -10.04 133.44 30.0 -9.88 132.98 0.57 0.40 0.20 1.76 7.15 12.4 PNG
20250422 12:50:00 SSMISF17 89GHz -10.04 133.44 30.0 -9.85 132.92 0.57 0.40 0.20 1.76 6.83 12.4 PNG
20250422 13:20:00 SSMISF17 89GHz -10.04 133.44 30.0 -9.83 132.86 0.57 0.40 0.20 1.76 6.52 12.4 PNG
20250422 13:50:00 SSMISF17 89GHz -10.04 133.44 30.0 -9.93 132.92 0.57 0.40 0.20 1.76 6.22 12.4 PNG
20250422 14:20:00 SSMISF17 89GHz -10.04 133.44 30.0 -9.89 132.87 0.57 0.40 0.20 1.76 5.92 12.4 PNG
20250422 14:50:00 SSMISF17 89GHz -10.04 133.44 30.0 -9.87 132.81 0.57 0.40 0.20 1.76 5.64 12.4 PNG
20250422 15:20:00 SSMISF17 89GHz -10.04 133.44 30.0 -9.84 132.76 0.57 0.40 0.20 1.76 5.37 12.4 PNG
20250422 15:50:00 SSMISF17 89GHz -10.04 133.44 30.0 -9.80 132.71 0.57 0.40 0.20 1.76 5.12 12.4 PNG
20250422 16:20:00 SSMISF17 89GHz -10.04 133.44 30.0 -9.78 132.66 0.57 0.40 0.20 1.76 4.88 12.4 PNG
20250422 16:50:00 SSMISF17 89GHz -10.04 133.44 30.0 -9.74 132.61 0.57 0.40 0.20 1.76 4.65 12.4 PNG
20250422 17:20:00 SSMISF17 89GHz -10.04 133.44 30.0 -9.71 132.55 0.57 0.40 0.20 1.76 4.43 12.4 PNG
20250422 17:50:00 SSMISF17 89GHz -10.04 133.44 30.0 -9.68 132.50 0.57 0.40 0.20 1.76 4.23 12.4 PNG
20250422 18:20:00 SSMISF17 89GHz -10.04 133.44 30.0 -9.66 132.44 0.57 0.40 0.20 1.76 4.04 12.4 PNG
20250422 18:50:00 SSMISF17 89GHz -10.04 133.44 30.0 -9.63 132.39 0.57 0.40 0.20 1.76 3.86 12.4 PNG
20250422 19:20:00 SSMISF17 89GHz -10.04 133.44 30.0 -9.60 132.33 0.57 0.40 0.20 1.76 3.70 12.4 PNG
20250422 19:50:00 SSMISF18 89GHz -9.50 132.37 20.0 -8.10 133.54 0.96 0.50 0.34 0.71 4.94 0.2 PNG
20250422 20:20:00 SSMISF18 89GHz -9.50 132.37 20.0 -8.09 133.50 0.96 0.50 0.34 0.71 4.80 0.2 PNG
20250422 20:50:00 HIMAWARI IR -9.44 132.25 20.0 -9.29 134.05 0.92 0.10 N/A 0.73 5.13 0.0 PNG
20250422 21:30:00 SSMISF18 89GHz -9.50 132.37 20.0 -8.03 133.36 0.96 0.50 0.34 0.71 4.54 0.2 PNG
20250422 21:50:00 SSMISF18 89GHz -9.50 132.37 20.0 -8.01 133.32 0.96 0.50 0.34 0.71 4.45 0.2 PNG
20250422 22:20:00 SSMISF18 89GHz -9.50 132.37 20.0 -7.98 133.27 0.96 0.50 0.34 0.71 4.33 0.2 PNG
20250422 22:50:00 SSMISF18 89GHz -9.50 132.37 20.0 -7.96 133.21 0.96 0.50 0.34 0.71 4.20 0.2 PNG
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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 |
