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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
20261002 19:10:19 * SSMIS-18 89-92GHz 76 18.31 145.17 18.19 145.11 0.13 0.36 1.30 86
20261002 17:30:00   HIMAWARI9 IR 74 18.07 144.71 18.12 144.74 0.35 1.00 0.10 5
20261002 17:30:00   HIMAWARI9 SWIR 74 17.82 144.63 17.87 144.66 0.14 0.40 0.10 ***
20261002 14:30:00   HIMAWARI9 IR 70 17.85 144.68 17.90 144.70 0.59 1.66 0.10 6
20261002 14:30:00   HIMAWARI9 SWIR 70 17.58 144.73 17.63 144.75 3.36 9.49 0.10 ***
20261002 11:30:00   HIMAWARI9 IR 62 17.43 144.71 17.50 144.71 0.50 1.40 0.10 1
20261002 11:30:00   HIMAWARI9 SWIR 62 17.63 144.68 17.70 144.68 0.81 2.29 0.40 ***
20261002 08:30:00   HIMAWARI9 IR 60 16.89 146.75 16.95 146.75 3.36 9.49 0.30 0
20261002 08:30:00   HIMAWARI9 SWIR 60 17.26 145.05 17.33 145.05 0.94 2.65 0.10 ***
20261002 06:37:19 * SSMIS-18 89-92GHz 59 16.70 144.58 16.62 144.58 0.16 0.44 0.80 77
20261002 05:30:00   HIMAWARI9 IR 57 16.84 144.24 16.83 144.23 3.36 9.49 0.50 6
20261002 05:30:00   HIMAWARI9 SWIR 57 17.34 144.66 17.33 144.65 3.36 9.49 0.20 ***
20261002 02:30:00   HIMAWARI9 IR 55 18.17 143.03 18.16 143.02 3.36 9.49 0.80 5
20261002 02:30:00   HIMAWARI9 SWIR 55 16.62 144.75 16.61 144.74 2.08 5.88 0.60 ***
20261001 23:30:00   HIMAWARI9 IR 52 15.88 144.49 15.89 144.46 0.55 1.57 0.20 8
20261001 23:30:00   HIMAWARI9 SWIR 52 15.93 144.33 15.94 144.30 1.39 3.93 0.80 ***
20261001 21:56:29   GMI 37GHz 51 16.73 144.64 16.71 144.70 0.16 0.46 0.90 ***
20261001 21:56:29   GMI 89-92GHz 51 16.93 144.53 16.91 144.60 0.46 1.29 1.40 3
20261001 20:30:00   HIMAWARI9 IR 50 15.63 144.98 15.64 144.95 2.52 7.13 0.70 13
20261001 20:30:00   HIMAWARI9 SWIR 50 16.48 144.82 16.49 144.79 2.03 5.75 0.60 ***
20261001 19:59:15   SSMIS-17 89-92GHz 50 16.92 144.70 16.94 144.63 0.35 1.00 1.50 4
20261001 19:25:12   SSMIS-18 89-92GHz 54 *** *** *** *** 0.17 0.48 1.10 8
20261001 17:30:00   HIMAWARI9 IR 52 18.13 146.61 18.17 146.55 3.36 9.49 0.20 22
20261001 17:30:00 * HIMAWARI9 SWIR 52 18.23 146.50 18.27 146.44 0.33 0.94 0.40 ***
20261001 14:30:00   HIMAWARI9 IR 50 18.29 146.64 18.32 146.58 3.36 9.49 0.90 2
20261001 14:30:00   HIMAWARI9 SWIR 50 18.29 146.64 18.32 146.58 0.75 2.12 0.20 ***
20261001 11:30:00   HIMAWARI9 IR 41 18.21 147.76 18.18 147.68 3.36 9.49 0.10 26
20261001 11:30:00   HIMAWARI9 SWIR 41 18.41 147.61 18.38 147.52 0.56 1.58 0.20 ***
20261001 08:30:00   HIMAWARI9 IR 40 17.96 148.27 17.93 148.18 2.20 6.20 0.20 48
20261001 08:30:00   HIMAWARI9 SWIR 40 18.11 148.19 18.08 148.10 0.55 1.54 0.50 ***
20261001 06:51:32 * SSMIS-18 89-92GHz 44 17.20 146.83 17.25 146.97 0.34 0.96 2.00 16
20261001 05:30:00   HIMAWARI9 IR 42 16.64 149.10 16.66 149.00 1.05 2.95 0.90 47
20261001 05:30:00   HIMAWARI9 SWIR 42 15.99 146.72 16.01 146.63 3.36 9.49 0.30 ***
20261001 02:30:00   HIMAWARI9 IR 40 16.39 148.87 16.40 148.78 3.36 9.49 0.40 6
20261001 02:30:00   HIMAWARI9 SWIR 40 16.69 148.14 16.70 148.05 3.36 9.49 0.80 ***
20260930 23:30:00   HIMAWARI9 IR 37 15.79 148.63 15.83 148.45 2.26 6.38 0.50 44
20260930 23:30:00   HIMAWARI9 SWIR 37 15.66 147.20 15.70 147.02 0.80 2.27 0.10 ***
20260930 20:30:00   HIMAWARI9 IR 35 15.49 148.70 15.53 148.52 1.44 4.08 0.30 55
20260930 20:30:00   HIMAWARI9 SWIR 35 16.09 149.01 16.13 148.84 3.36 9.49 0.30 ***
20260930 20:13:30   SSMIS-17 89-92GHz 35 *** *** *** *** 0.58 1.64 1.10 1
20260930 17:58:43   SSMIS-18 89-92GHz 38 16.43 149.60 16.43 149.60 0.41 1.17 0.70 9
20260930 17:30:00   HIMAWARI9 IR 37 16.04 149.59 16.06 149.50 3.36 9.49 0.10 35
20260930 17:30:00   HIMAWARI9 SWIR 37 15.49 149.87 15.51 149.79 2.31 6.53 0.10 ***
20260930 14:30:00   HIMAWARI9 IR 35 15.59 149.92 15.60 149.84 3.36 9.49 0.30 0
20260930 14:30:00   HIMAWARI9 SWIR 35 15.31 148.83 15.33 148.74 0.68 1.93 0.10 ***
20260930 11:30:00   HIMAWARI9 IR 31 16.09 148.99 16.11 149.00 3.36 9.49 0.90 1
20260930 11:30:00 * HIMAWARI9 SWIR 31 14.76 148.36 14.78 148.37 0.40 1.13 0.40 ***
20260930 11:11:29   GMI 37GHz 31 *** *** *** *** 0.35 0.98 0.50 ***
20260930 11:11:29   GMI 89-92GHz 31 *** *** *** *** 0.38 1.07 0.10 5
20260930 08:30:00   HIMAWARI9 IR 30 16.01 149.60 16.02 149.61 2.44 6.89 0.30 2
20260930 08:30:00 * HIMAWARI9 SWIR 30 16.13 149.73 16.15 149.74 0.29 0.83 0.10 ***
20260930 07:39:10   SSMIS-17 89-92GHz 27 *** *** *** *** 0.40 1.13 2.10 4
20260930 05:30:00   HIMAWARI9 IR 26 14.86 152.25 14.88 152.17 3.36 9.49 0.10 1
20260930 05:30:00 * HIMAWARI9 SWIR 26 17.11 152.85 17.12 152.77 0.50 1.41 0.80 ***
20260930 02:30:00   HIMAWARI9 IR 25 13.86 152.48 13.88 152.40 3.36 9.49 0.20 7
20260930 02:30:00   HIMAWARI9 SWIR 25 15.53 151.81 15.55 151.73 3.36 9.49 0.30 ***

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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