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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
20260826 14:30:00   HIMAWARI9 IR 16 20.25 110.04 20.29 110.05 3.36 9.49 0.70 3
20260826 14:30:00   HIMAWARI9 SWIR 16 20.25 110.12 20.29 110.13 3.36 9.49 0.70 ***
20260826 11:30:00   HIMAWARI9 IR 17 20.65 109.35 20.69 109.36 3.36 9.49 1.00 19
20260826 11:30:00   HIMAWARI9 SWIR 17 23.12 109.54 23.17 109.55 1.66 4.70 0.30 ***
20260826 08:43:45   SSMIS-18 89-92GHz 18 *** *** *** *** 0.49 1.38 5.00 0
20260826 08:00:00   HIMAWARI9 IR 18 19.23 111.08 19.31 111.11 0.66 1.87 0.50 55
20260826 08:00:00 * HIMAWARI9 SWIR 18 19.18 110.95 19.26 110.97 0.57 1.61 0.30 ***
20260826 06:33:14   AMSR2 37GHz 19 *** *** *** *** 0.34 0.95 1.20 ***
20260826 06:33:14   AMSR2 89-92GHz 19 *** *** *** *** 0.64 1.80 5.00 0
20260826 05:00:00   HIMAWARI9 IR 20 22.38 109.93 22.46 109.99 3.36 9.49 0.40 0
20260826 05:00:00   HIMAWARI9 SWIR 20 22.51 109.13 22.59 109.19 1.10 3.12 0.90 ***
20260826 02:30:00   HIMAWARI9 IR 21 22.57 109.71 22.61 109.74 3.36 9.49 0.10 1
20260826 02:30:00   HIMAWARI9 SWIR 21 22.44 109.28 22.48 109.31 0.59 1.68 0.40 ***
20260825 23:50:44   GMI 37GHz 23 21.41 108.70 21.42 108.71 0.49 1.37 0.70 ***
20260825 23:50:44   GMI 89-92GHz 23 *** *** *** *** 0.26 0.73 5.00 0
20260825 23:30:00   HIMAWARI9 IR 23 22.26 109.24 22.30 109.26 0.64 1.81 1.00 7
20260825 23:30:00 * HIMAWARI9 SWIR 23 22.21 109.16 22.25 109.18 0.43 1.23 0.20 ***
20260825 21:30:13   SSMIS-18 89-92GHz 24 *** *** *** *** 0.37 1.06 1.60 18
20260825 20:30:00   HIMAWARI9 IR 25 22.07 109.21 22.10 109.24 0.67 1.89 0.50 31
20260825 20:30:00   HIMAWARI9 SWIR 25 21.72 109.40 21.75 109.43 0.62 1.74 0.40 ***
20260825 18:00:31   AMSR2 37GHz 25 20.70 109.55 20.70 109.55 0.45 1.27 0.50 ***
20260825 18:00:31   AMSR2 89-92GHz 25 20.70 109.60 20.70 109.60 0.40 1.12 1.40 5
20260825 17:30:00   HIMAWARI9 IR 28 18.43 110.91 18.48 110.96 3.36 9.49 0.10 4
20260825 17:30:00   HIMAWARI9 SWIR 28 21.83 109.26 21.88 109.31 0.99 2.79 0.60 ***
20260825 14:20:00   HIMAWARI9 IR 30 18.15 110.51 18.20 110.59 3.36 9.49 1.00 3
20260825 14:20:00   HIMAWARI9 SWIR 30 18.12 110.46 18.18 110.54 0.85 2.39 0.40 ***
20260825 11:30:00   HIMAWARI9 IR 37 17.79 109.05 17.80 109.11 0.63 1.79 0.60 4
20260825 11:30:00   HIMAWARI9 SWIR 37 17.79 109.10 17.80 109.16 0.67 1.89 0.60 ***
20260825 11:27:17   SSMIS-16 89-92GHz 37 19.06 109.21 19.07 109.27 0.52 1.48 2.50 0
20260825 08:58:40 * SSMIS-18 89-92GHz 31 19.02 109.33 19.02 109.33 0.51 1.44 2.80 1
20260825 08:10:00   HIMAWARI9 SWIR 40 18.36 110.09 18.38 110.19 0.79 2.23 0.60 ***
20260825 08:00:00   HIMAWARI9 IR 40 18.36 110.15 18.38 110.26 1.43 4.03 0.60 5
20260825 05:49:53   AMSR2 37GHz 33 19.36 108.24 19.37 108.26 0.31 0.87 1.30 ***
20260825 05:49:53   AMSR2 89-92GHz 33 19.36 108.30 19.37 108.32 0.39 1.10 2.80 3
20260825 05:00:00   HIMAWARI9 IR 33 18.41 109.81 18.42 109.93 3.36 9.49 0.50 0
20260825 05:00:00   HIMAWARI9 SWIR 33 17.66 108.91 17.67 109.02 3.36 9.49 0.20 ***
20260825 02:30:00   HIMAWARI9 IR 35 21.36 107.93 21.37 107.99 0.64 1.80 0.10 37
20260825 02:30:00   HIMAWARI9 SWIR 35 21.36 107.72 21.37 107.78 0.38 1.09 0.90 ***
20260825 00:30:45   GMI 37GHz 35 19.42 107.62 19.41 107.56 0.35 0.98 1.20 ***
20260825 00:30:45   GMI 89-92GHz 35 19.52 108.09 19.51 108.03 0.36 1.02 1.70 6
20260824 23:10:00   HIMAWARI9 SWIR 35 18.76 108.47 18.73 108.44 1.14 3.23 0.50 ***
20260824 23:00:00   HIMAWARI9 IR 35 18.26 109.10 18.23 109.07 2.98 8.41 0.70 8
20260824 21:44:25   SSMIS-18 89-92GHz 35 19.45 108.26 19.48 108.29 0.59 1.66 1.90 1
20260824 20:30:00   HIMAWARI9 IR 35 17.75 108.88 17.73 108.86 3.36 9.49 0.30 1
20260824 20:30:00   HIMAWARI9 SWIR 35 17.58 108.40 17.56 108.38 0.74 2.10 0.30 ***
20260824 18:55:58 * AMSR2 37GHz 35 19.50 107.76 19.53 107.79 0.16 0.44 0.70 ***
20260824 18:55:58   AMSR2 89-92GHz 35 19.50 107.76 19.53 107.79 0.59 1.67 1.50 0
20260824 17:30:00   HIMAWARI9 IR 38 17.81 108.69 17.80 108.72 1.70 4.80 0.80 6
20260824 17:30:00   HIMAWARI9 SWIR 38 17.76 108.61 17.75 108.64 0.42 1.19 0.80 ***
20260824 14:30:00   HIMAWARI9 IR 40 17.94 108.68 17.93 108.71 1.80 5.09 0.30 5
20260824 14:30:00   HIMAWARI9 SWIR 40 17.86 108.57 17.85 108.61 0.52 1.46 0.20 ***
20260824 11:41:02   SSMIS-16 89-92GHz 40 *** *** *** *** 0.54 1.54 1.70 1
20260824 11:30:00   HIMAWARI9 IR 40 18.13 108.60 18.10 108.60 1.09 3.07 0.50 5
20260824 11:30:00   HIMAWARI9 SWIR 40 19.25 107.00 19.23 107.00 0.58 1.65 0.30 ***
20260824 11:05:44   GMI 37GHz 40 19.74 107.31 19.69 107.31 0.33 0.93 0.50 ***
20260824 11:05:44   GMI 89-92GHz 40 *** *** *** *** 0.59 1.67 1.60 0
20260824 08:30:00   HIMAWARI9 IR 40 21.49 106.16 21.46 106.16 3.36 9.49 0.10 11
20260824 08:30:00 * HIMAWARI9 SWIR 40 18.01 108.20 17.99 108.20 0.28 0.79 1.00 ***
20260824 06:45:22   AMSR2 37GHz 40 *** *** *** *** 0.50 1.43 0.70 ***
20260824 05:20:00   HIMAWARI9 IR 40 18.12 107.80 18.08 107.76 1.06 3.00 0.10 15
20260824 05:20:00   HIMAWARI9 SWIR 40 18.15 107.96 18.11 107.92 0.64 1.80 1.00 ***
20260824 02:30:00   HIMAWARI9 IR 40 19.22 108.56 19.18 108.53 3.36 9.49 0.30 4
20260824 02:30:00   HIMAWARI9 SWIR 40 19.17 106.51 19.13 106.48 3.36 9.49 0.10 ***
20260824 00:27:16   SSMIS-16 89-92GHz 40 20.21 107.77 20.24 107.79 0.27 0.76 2.00 5
20260823 23:30:00   HIMAWARI9 IR 40 18.34 108.42 18.33 108.40 0.53 1.50 0.90 34
20260823 23:30:00   HIMAWARI9 SWIR 40 18.39 108.58 18.38 108.56 0.40 1.13 0.30 ***
20260823 22:35:28   SSMIS-17 89-92GHz 40 *** *** *** *** 0.28 0.78 0.70 3
20260823 20:30:00   HIMAWARI9 IR 40 18.47 108.04 18.46 108.02 3.36 9.49 0.10 47
20260823 20:30:00   HIMAWARI9 SWIR 40 19.87 107.32 19.86 107.30 0.45 1.26 0.10 ***
20260823 18:12:47 * AMSR2 37GHz 40 20.49 107.85 20.50 107.86 0.38 1.08 0.60 ***
20260823 18:12:47   AMSR2 89-92GHz 40 *** *** *** *** 0.45 1.28 0.40 4
20260823 17:30:00   HIMAWARI9 IR 40 18.69 109.28 18.68 109.26 3.36 9.49 0.40 5
20260823 17:00:00   HIMAWARI9 SWIR 40 18.81 109.44 18.80 109.39 2.03 5.73 0.70 ***
20260823 14:30:00   HIMAWARI9 IR 40 18.99 109.59 18.98 109.57 3.36 9.49 0.20 2
20260823 14:30:00   HIMAWARI9 SWIR 40 19.24 109.81 19.23 109.78 1.54 4.34 0.10 ***
20260823 11:50:45   GMI 37GHz 35 *** *** *** *** 0.21 0.60 0.80 ***
20260823 11:50:45   GMI 89-92GHz 35 *** *** *** *** 0.32 0.91 0.10 1
20260823 11:30:00   HIMAWARI9 IR 35 19.64 110.05 19.63 110.05 2.68 7.58 0.80 10
20260823 11:30:00   HIMAWARI9 SWIR 35 19.44 109.94 19.43 109.94 0.63 1.78 0.20 ***
20260823 08:10:00   HIMAWARI9 SWIR 35 19.09 109.59 19.08 109.59 0.84 2.39 0.10 ***
20260823 08:00:00   HIMAWARI9 IR 35 20.26 106.23 20.25 106.23 2.66 7.52 0.30 4
20260823 06:02:26   AMSR2 37GHz 35 20.70 108.37 20.70 108.37 0.19 0.54 0.90 ***
20260823 06:02:26   AMSR2 89-92GHz 35 20.50 108.42 20.50 108.42 0.50 1.42 1.10 2
20260823 05:30:00   HIMAWARI9 IR 35 21.58 106.44 21.56 106.45 3.36 9.49 0.10 2
20260823 05:30:00   HIMAWARI9 SWIR 35 21.88 106.17 21.86 106.19 1.27 3.58 0.20 ***
20260823 02:30:00   HIMAWARI9 IR 35 20.43 107.15 20.41 107.17 0.71 2.00 0.10 3
20260823 02:30:00   HIMAWARI9 SWIR 35 20.68 107.04 20.66 107.06 1.03 2.91 0.10 ***
20260823 00:41:02 * SSMIS-16 89-92GHz 32 20.81 108.26 20.84 108.24 0.34 0.97 1.30 14
20260822 23:30:00   HIMAWARI9 IR 31 20.49 107.51 20.47 107.47 3.36 9.49 0.10 0
20260822 23:30:00   HIMAWARI9 SWIR 31 19.54 109.14 19.52 109.10 1.35 3.82 0.10 ***
20260822 20:30:00   HIMAWARI9 IR 30 18.99 107.74 18.98 107.70 2.39 6.75 0.50 23
20260822 20:30:00 * HIMAWARI9 SWIR 30 19.52 109.75 19.50 109.71 0.35 0.99 0.40 ***
20260822 19:07:56   AMSR2 37GHz 30 *** *** *** *** 0.10 0.29 0.50 ***
20260822 17:30:00   HIMAWARI9 IR 31 20.84 110.12 20.84 110.15 3.36 9.49 0.90 4
20260822 17:30:00   HIMAWARI9 SWIR 31 19.14 109.00 19.14 109.02 1.16 3.29 0.20 ***
20260822 14:30:00   HIMAWARI9 IR 30 19.34 109.31 19.34 109.34 3.36 9.49 0.30 23
20260822 14:30:00 * HIMAWARI9 SWIR 30 19.32 109.28 19.32 109.31 0.44 1.24 0.40 ***
20260822 11:30:00   HIMAWARI9 IR 30 18.99 108.38 18.98 108.38 2.05 5.79 0.90 13
20260822 11:30:00   HIMAWARI9 SWIR 30 21.62 106.43 21.61 106.42 1.43 4.03 0.10 ***
20260822 10:18:05   SSMIS-17 89-92GHz 30 21.03 106.96 21.05 106.99 0.43 1.22 1.50 4
20260822 08:10:00   HIMAWARI9 SWIR 30 19.66 109.68 19.65 109.67 0.95 2.69 0.10 ***
20260822 08:00:00   HIMAWARI9 IR 30 19.26 108.74 19.25 108.73 1.75 4.94 0.30 48
20260822 05:30:00   HIMAWARI9 IR 35 19.20 109.28 19.20 109.23 3.36 9.49 0.50 7
20260822 05:30:00   HIMAWARI9 SWIR 35 19.30 109.58 19.30 109.53 2.18 6.16 0.60 ***
20260822 02:30:00   HIMAWARI9 IR 35 19.35 109.72 19.35 109.67 1.91 5.41 0.60 6
20260822 02:30:00   HIMAWARI9 SWIR 35 21.30 106.66 21.30 106.61 3.36 9.49 0.50 ***
20260822 01:00:45   GMI 37GHz 35 *** *** *** *** 0.43 1.21 1.20 ***
20260822 01:00:45   GMI 89-92GHz 35 *** *** *** *** 0.36 1.02 2.70 14
20260821 23:30:00 * HIMAWARI9 IR 35 19.54 110.07 19.55 110.07 0.48 1.36 0.40 11
20260821 23:30:00   HIMAWARI9 SWIR 35 19.39 109.81 19.40 109.80 0.49 1.38 0.80 ***
20260821 23:03:47   SSMIS-17 89-92GHz 35 *** *** *** *** 0.49 1.38 3.60 1
20260821 20:46:00   SSMIS-18 89-92GHz 35 *** *** *** *** 0.34 0.96 0.50 1
20260821 20:00:00 * HIMAWARI9 IR 35 19.16 109.34 19.18 109.32 0.44 1.25 0.30 57
20260821 20:00:00   HIMAWARI9 SWIR 35 21.36 108.53 21.38 108.52 1.01 2.85 0.10 ***
20260821 18:24:58 * AMSR2 37GHz 35 21.16 108.48 21.15 108.48 0.39 1.09 0.20 ***
20260821 18:24:58   AMSR2 89-92GHz 35 *** *** *** *** 0.60 1.69 0.80 3
20260821 17:00:00   HIMAWARI9 IR 35 19.11 109.63 19.15 109.63 3.36 9.49 0.20 4
20260821 17:00:00   HIMAWARI9 SWIR 35 19.19 109.79 19.22 109.79 0.84 2.39 1.00 ***
20260821 14:00:00   HIMAWARI9 IR 35 19.41 110.24 19.44 110.24 0.86 2.44 0.60 12
20260821 14:00:00   HIMAWARI9 SWIR 35 19.41 110.24 19.44 110.24 0.46 1.31 0.60 ***
20260821 11:35:44   GMI 37GHz 30 *** *** *** *** 0.16 0.46 1.80 ***
20260821 11:35:44   GMI 89-92GHz 30 *** *** *** *** 0.29 0.83 0.80 2
20260821 11:30:00   HIMAWARI9 IR 30 19.86 110.51 19.88 110.53 2.22 6.28 0.50 4
20260821 11:30:00   HIMAWARI9 SWIR 30 19.29 110.06 19.30 110.07 3.36 9.49 0.20 ***
20260821 10:32:08   SSMIS-17 89-92GHz 30 20.24 109.67 20.29 109.72 0.40 1.13 2.20 1
20260821 08:14:37   SSMIS-18 89-92GHz 30 *** *** *** *** 0.24 0.67 1.00 2
20260821 08:00:00   HIMAWARI9 IR 30 18.79 109.11 18.82 109.14 3.36 9.49 0.10 40
20260821 08:00:00   HIMAWARI9 SWIR 30 18.94 109.62 18.97 109.65 1.23 3.48 0.20 ***
20260821 06:14:38 * AMSR2 37GHz 30 20.51 108.76 20.50 108.75 0.23 0.64 0.70 ***
20260821 06:14:38   AMSR2 89-92GHz 30 *** *** *** *** 0.39 1.10 1.20 1
20260821 05:30:00   HIMAWARI9 IR 30 18.56 109.45 18.60 109.45 3.36 9.49 0.20 13
20260821 05:30:00   HIMAWARI9 SWIR 30 19.46 109.51 19.50 109.51 3.36 9.49 0.10 ***
20260821 02:30:00   HIMAWARI9 IR 30 18.25 108.23 18.28 108.23 2.78 7.86 0.50 31
20260821 02:30:00   HIMAWARI9 SWIR 30 20.10 107.21 20.13 107.21 0.34 0.96 0.30 ***
20260821 01:45:44   GMI 37GHz 25 *** *** *** *** 0.28 0.78 0.40 ***
20260821 01:45:44   GMI 89-92GHz 25 *** *** *** *** 0.35 1.00 2.20 8
20260820 23:30:00   HIMAWARI9 IR 25 19.11 106.68 19.12 106.69 2.26 6.39 0.50 8
20260820 23:30:00   HIMAWARI9 SWIR 25 19.96 107.85 19.97 107.87 3.36 9.49 0.20 ***
20260820 23:18:17 * SSMIS-17 89-92GHz 25 20.26 108.92 20.27 108.94 0.26 0.74 1.00 8
20260820 21:00:51   SSMIS-18 89-92GHz 25 *** *** *** *** 0.26 0.72 0.50 1
20260820 20:30:00   HIMAWARI9 IR 25 18.90 110.10 18.91 110.12 3.36 9.49 0.10 2
20260820 20:30:00   HIMAWARI9 SWIR 25 19.98 107.97 19.98 107.99 3.36 9.49 0.10 ***

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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