Tropical Storm 21W
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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 .
20260827 03:30:00 AMSR2 89GHz 20.87 167.82 30.0 20.47 167.87 0.72 0.40 0.25 1.22 6.62 28.0 PNG
20260827 04:30:00 AMSR2 89GHz 20.87 167.82 30.0 20.60 167.91 0.72 0.40 0.25 1.22 5.98 28.0 PNG
20260827 05:00:00 AMSR2 89GHz 20.87 167.82 30.0 20.66 167.93 0.72 0.40 0.25 1.22 5.77 28.0 PNG
20260827 05:30:00 AMSR2 89GHz 20.87 167.82 30.0 20.73 167.95 0.72 0.40 0.25 1.22 5.56 28.0 PNG
20260827 06:00:00 AMSR2 89GHz 20.87 167.82 30.0 20.80 167.97 0.72 0.40 0.25 1.22 5.35 28.0 PNG
20260827 06:30:00 AMSR2 89GHz 20.87 167.82 30.0 20.86 167.99 0.72 0.40 0.25 1.22 5.14 28.0 PNG
20260827 07:00:00 AMSR2 89GHz 20.87 167.82 30.0 20.93 168.01 0.72 0.40 0.25 1.22 4.93 28.0 PNG
20260827 07:30:00 AMSR2 89GHz 20.87 167.82 30.0 21.00 168.02 0.72 0.40 0.25 1.22 4.73 28.0 PNG
20260827 08:00:00 AMSR2 89GHz 20.87 167.82 30.0 21.06 168.04 0.72 0.40 0.25 1.22 4.54 28.0 PNG
20260827 08:20:00 AMSR2 89GHz 20.87 167.82 30.0 21.10 168.16 0.72 0.40 0.25 1.22 4.41 28.0 PNG
20260827 09:00:00 AMSR2 89GHz 20.87 167.82 30.0 21.20 168.17 0.72 0.40 0.25 1.22 4.18 28.0 PNG
20260827 09:30:00 AMSR2 89GHz 20.87 167.82 30.0 21.27 168.18 0.72 0.40 0.25 1.22 4.01 28.0 PNG
20260827 10:00:00 AMSR2 89GHz 20.87 167.82 30.0 21.34 168.05 0.72 0.40 0.25 1.22 3.84 28.0 PNG
20260827 10:20:00 AMSR2 89GHz 20.87 167.82 30.0 21.39 168.06 0.72 0.40 0.25 1.22 3.74 28.0 PNG
20260827 11:00:00 AMSR2 89GHz 20.87 167.82 30.0 21.48 168.06 0.72 0.40 0.25 1.22 3.54 28.0 PNG
20260827 11:30:00 AMSR2 89GHz 20.87 167.82 30.0 21.55 168.08 0.72 0.40 0.25 1.22 3.40 28.0 PNG
20260827 12:00:00 AMSR2 89GHz 20.87 167.82 30.0 21.62 168.09 0.72 0.40 0.25 1.22 3.27 28.0 PNG
20260827 12:30:00 AMSR2 89GHz 20.87 167.82 30.0 21.70 168.08 0.72 0.40 0.25 1.22 3.15 28.0 PNG
20260827 13:00:00 AMSR2 89GHz 20.87 167.82 30.0 21.77 168.09 0.72 0.40 0.25 1.22 3.03 28.0 PNG
20260827 13:20:00 AMSR2 89GHz 20.87 167.82 30.0 21.82 168.10 0.72 0.40 0.25 1.22 2.95 28.0 PNG
20260827 14:00:00 AMSR2 89GHz 20.87 167.82 30.0 21.91 168.12 0.72 0.40 0.25 1.22 2.81 28.0 PNG
20260827 14:20:00 HIMAWARI SWIR 22.37 168.04 40.0 22.47 168.20 3.56 0.05 N/A 0.20 1.33 0.0 PNG
20260827 15:00:00 HIMAWARI SWIR 22.45 168.04 40.0 22.65 168.29 1.79 0.25 N/A 0.35 2.65 0.0 PNG
20260827 15:20:00 HIMAWARI SWIR 22.47 167.88 40.0 22.74 168.29 5.10 0.05 N/A 0.15 0.93 0.0 PNG
20260827 16:00:00 HIMAWARI SWIR 22.53 167.87 40.0 22.78 168.62 2.45 0.05 N/A 0.27 1.93 0.0 PNG
20260827 16:30:00 AMSR2 89GHz 22.60 167.85 40.0 22.35 168.34 1.08 0.30 0.38 0.54 4.40 15.7 PNG
20260827 17:00:00 AMSR2 89GHz 22.60 167.85 40.0 22.39 168.33 1.08 0.30 0.38 0.54 4.04 15.7 PNG
20260827 17:20:00 AMSR2 89GHz 22.60 167.85 40.0 22.43 168.32 1.08 0.30 0.38 0.54 3.97 15.7 PNG
20260827 18:00:00 AMSR2 89GHz 22.60 167.85 40.0 22.51 168.29 1.08 0.30 0.38 0.54 3.83 15.7 PNG
20260827 18:20:00 AMSR2 89GHz 22.60 167.85 40.0 22.55 168.28 1.08 0.30 0.38 0.54 3.76 15.7 PNG
20260827 19:00:00 AMSR2 89GHz 22.60 167.85 40.0 22.63 168.26 1.08 0.30 0.38 0.54 3.62 15.7 PNG
20260827 19:20:00 GMI 89GHz 22.98 167.75 40.0 22.98 167.21 1.33 1.55 0.47 0.29 3.57 6.2 PNG
20260827 19:50:00 GMI 89GHz 22.98 167.75 40.0 22.98 167.21 1.33 1.55 0.47 0.29 3.56 6.2 PNG
20260827 20:20:00 GMI 89GHz 22.98 167.75 40.0 23.04 167.19 1.33 1.55 0.47 0.29 3.52 6.2 PNG
20260827 20:50:00 GMI 89GHz 22.98 167.75 40.0 23.10 167.17 1.33 1.55 0.47 0.29 3.47 6.2 PNG
20260827 21:30:00 HIMAWARI Vis 23.22 167.68 40.0 24.19 165.81 1.18 0.05 N/A 0.34 4.04 0.0 PNG
20260827 22:00:00 GMI 89GHz 22.98 167.75 40.0 23.24 167.13 1.33 1.55 0.47 0.29 3.32 6.2 PNG
20260827 22:30:00 HIMAWARI Vis 23.33 167.65 40.0 24.78 166.15 1.03 0.25 N/A 0.38 4.62 0.0 PNG
20260827 23:00:00 HIMAWARI Vis 23.39 167.63 40.0 24.79 166.08 0.92 0.20 N/A 0.41 5.14 0.0 PNG
20260827 23:30:00 HIMAWARI Vis 23.45 167.62 40.0 24.72 165.95 1.22 0.10 N/A 0.33 3.88 0.0 PNG
20260828 00:00:00 HIMAWARI Vis 23.50 167.60 40.0 24.45 166.07 1.34 0.15 N/A 0.30 3.54 0.0 PNG
20260828 00:30:00 GMI 89GHz 22.98 167.75 40.0 23.57 167.04 1.33 1.55 0.47 0.29 2.95 6.2 PNG
20260828 01:00:00 GMI 89GHz 22.98 167.75 40.0 23.63 167.02 1.33 1.55 0.47 0.29 2.88 6.2 PNG
20260828 01:30:00 HIMAWARI Vis 23.68 167.55 40.0 24.75 166.02 1.62 0.05 N/A 0.26 2.92 0.0 PNG
20260828 02:00:00 HIMAWARI Vis 23.74 167.53 40.0 24.74 165.89 1.38 0.20 N/A 0.30 3.45 0.0 PNG
20260828 02:20:00 HIMAWARI Vis 23.80 167.51 40.0 24.65 165.70 1.28 0.45 N/A 0.31 3.70 0.0 PNG
20260828 03:00:00 HIMAWARI Vis 23.87 167.49 40.0 24.60 165.46 1.66 0.20 N/A 0.26 2.85 0.0 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 |
