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Geo IR 85-92GHz
Date/Time_(UTC) Source Sensor Vmax(kts) ARCHER Lat Lon Geo-ref Lat Lon 50% cert. rad. 95% cert. rad. Eye diam (deg) % cert. of eye
20260906 08:30:00   HIMAWARI9 IR 20 29.07 132.87 29.11 132.82 3.36 9.49 0.90 13
20260906 08:30:00   HIMAWARI9 SWIR 20 29.10 132.90 29.13 132.84 0.47 1.32 0.90 ***
20260906 08:25:34 * SSMIS-17 89-92GHz 20 29.17 132.24 29.21 132.18 0.38 1.08 1.10 1
20260906 07:48:28   SSMIS-18 89-92GHz 20 *** *** *** *** 0.47 1.34 5.00 0
20260906 05:30:00   HIMAWARI9 IR 20 28.80 132.03 28.84 131.97 3.36 9.49 1.00 4
20260906 05:30:00   HIMAWARI9 SWIR 20 28.35 132.43 28.39 132.38 1.15 3.26 0.50 ***
20260906 05:10:44 * GMI 37GHz 20 28.78 132.70 28.84 132.61 0.29 0.82 0.40 ***
20260906 05:10:44   GMI 89-92GHz 20 *** *** *** *** 0.43 1.23 2.20 2
20260906 02:30:00   HIMAWARI9 IR 20 28.36 132.17 28.40 132.12 3.36 9.49 0.30 1
20260906 02:30:00   HIMAWARI9 SWIR 20 28.44 133.35 28.47 133.30 0.92 2.59 0.10 ***
20260905 23:30:00   HIMAWARI9 IR 20 28.41 133.77 28.46 133.70 3.36 9.49 0.60 4
20260905 23:30:00   HIMAWARI9 SWIR 20 28.41 133.95 28.46 133.87 0.70 1.99 0.20 ***
20260905 21:06:31   SSMIS-17 89-92GHz 21 29.13 132.15 29.12 132.17 0.48 1.35 1.20 1
20260905 20:30:00   HIMAWARI9 IR 21 28.29 133.19 28.34 133.12 3.36 9.49 1.00 2
20260905 20:30:00   HIMAWARI9 SWIR 21 27.97 134.13 28.02 134.06 1.98 5.60 0.30 ***
20260905 19:20:45   GMI 37GHz 22 *** *** *** *** 0.29 0.83 1.70 ***
20260905 19:20:45   GMI 89-92GHz 22 *** *** *** *** 0.60 1.70 1.00 0
20260905 17:30:00   HIMAWARI9 IR 23 27.66 132.67 27.71 132.59 2.53 7.14 1.00 7
20260905 17:30:00   HIMAWARI9 SWIR 23 28.68 132.87 28.73 132.79 3.36 9.49 0.10 ***
20260905 14:30:00   HIMAWARI9 IR 25 28.05 133.49 28.10 133.43 3.36 9.49 0.50 3
20260905 14:30:00   HIMAWARI9 SWIR 25 28.00 133.47 28.05 133.40 1.87 5.29 0.60 ***
20260905 11:30:00   HIMAWARI9 IR 25 28.08 134.12 28.16 134.00 3.36 9.49 0.20 2
20260905 11:30:00   HIMAWARI9 SWIR 25 28.06 134.37 28.13 134.25 3.36 9.49 0.60 ***
20260905 08:30:00   HIMAWARI9 IR 25 27.73 133.14 27.81 133.02 0.77 2.18 1.00 11
20260905 08:30:00   HIMAWARI9 SWIR 25 27.63 134.78 27.71 134.66 3.36 9.49 0.70 ***
20260905 06:22:26   SSMIS-18 89-92GHz 25 27.16 135.15 27.11 135.24 0.56 1.58 3.10 0
20260905 05:50:45   GMI 37GHz 25 27.22 136.61 27.25 136.58 0.40 1.13 1.70 ***
20260905 05:50:45 * GMI 89-92GHz 25 27.42 135.54 27.45 135.52 0.37 1.05 0.30 3
20260905 05:30:00   HIMAWARI9 IR 25 27.28 134.43 27.38 134.33 3.36 9.49 0.30 47
20260905 05:30:00   HIMAWARI9 SWIR 25 27.35 134.79 27.46 134.70 1.14 3.23 1.00 ***
20260905 02:30:00   HIMAWARI9 IR 25 25.92 138.09 26.03 138.00 2.05 5.80 0.70 3
20260905 02:30:00   HIMAWARI9 SWIR 25 27.24 133.89 27.35 133.80 2.88 8.13 0.10 ***
20260904 23:20:00   HIMAWARI9 IR 30 24.27 138.53 24.52 138.44 3.36 9.49 0.60 3
20260904 23:20:00   HIMAWARI9 SWIR 30 24.09 138.45 24.35 138.36 0.45 1.28 0.60 ***
20260904 21:21:57   SSMIS-17 89-92GHz 30 25.41 135.80 25.27 135.85 0.51 1.44 1.20 1
20260904 20:10:00   HIMAWARI9 IR 30 23.82 138.52 24.14 138.41 3.36 9.49 0.70 5
20260904 20:10:00   HIMAWARI9 SWIR 30 23.72 138.52 24.04 138.41 0.43 1.21 0.70 ***
20260904 19:06:02   SSMIS-18 89-92GHz 40 25.15 137.24 24.72 137.39 0.38 1.06 0.50 2
20260904 17:30:00   HIMAWARI9 IR 40 23.73 135.26 23.86 135.20 3.36 9.49 0.60 2
20260904 17:30:00   HIMAWARI9 SWIR 40 23.05 139.44 23.18 139.38 1.75 4.93 0.60 ***
20260904 14:20:00   HIMAWARI9 IR 40 21.39 138.78 21.56 138.70 3.36 9.49 0.90 10
20260904 14:20:00   HIMAWARI9 SWIR 40 21.74 138.78 21.91 138.70 0.75 2.13 0.80 ***

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 3-hr 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: ARCHER Track page

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