-- Link to ARCHER Track page --

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
20260815 08:43:22 * SSMIS-16 89-92GHz 20 28.37 157.62 28.37 157.67 0.46 1.31 4.00 1
20260815 08:30:00   HIMAWARI9 IR 20 28.08 158.21 28.10 158.29 3.36 9.49 0.40 0
20260815 08:30:00   HIMAWARI9 SWIR 20 28.01 158.27 28.02 158.35 1.92 5.44 0.60 ***
20260815 06:55:53   SSMIS-17 89-92GHz 20 28.31 157.32 28.28 157.16 0.54 1.53 5.00 0
20260815 05:30:00   HIMAWARI9 IR 20 27.97 157.53 27.98 157.62 3.36 9.49 0.50 0
20260815 05:30:00   HIMAWARI9 SWIR 20 28.07 157.79 28.08 157.87 3.36 9.49 0.20 ***
20260815 02:30:00   HIMAWARI9 IR 20 27.71 156.99 27.73 157.07 3.36 9.49 1.00 0
20260815 02:30:00   HIMAWARI9 SWIR 20 29.91 157.61 29.93 157.70 0.75 2.11 0.10 ***
20260814 23:30:00   HIMAWARI9 IR 20 27.65 156.24 27.65 156.31 3.36 9.49 0.60 0
20260814 23:30:00   HIMAWARI9 SWIR 20 28.05 156.07 28.05 156.14 0.99 2.80 1.00 ***
20260814 21:24:58 * SSMIS-16 89-92GHz 21 28.27 155.98 28.27 155.92 0.35 0.99 3.30 5
20260814 20:30:00   HIMAWARI9 IR 21 27.48 155.79 27.48 155.86 1.03 2.90 0.90 1
20260814 20:30:00   HIMAWARI9 SWIR 21 27.58 155.68 27.58 155.75 1.46 4.14 0.90 ***
20260814 19:37:56   SSMIS-17 89-92GHz 22 28.30 155.72 28.28 155.92 0.35 0.99 3.40 2
20260814 17:30:00   HIMAWARI9 IR 23 27.73 155.13 27.73 155.21 0.68 1.92 0.10 1
20260814 17:30:00   HIMAWARI9 SWIR 23 27.83 155.30 27.83 155.38 1.17 3.31 0.50 ***
20260814 14:59:03 * AMSR2 37GHz 25 28.10 154.78 28.10 154.79 0.20 0.56 2.90 ***
20260814 14:59:03   AMSR2 89-92GHz 25 28.25 154.90 28.25 154.90 0.36 1.01 2.20 2
20260814 14:30:00   HIMAWARI9 IR 25 27.70 154.60 27.70 154.67 1.73 4.89 0.40 1
20260814 14:30:00   HIMAWARI9 SWIR 25 27.75 154.72 27.75 154.79 0.38 1.08 0.80 ***
20260814 11:30:00   HIMAWARI9 IR 30 27.83 154.28 27.84 154.35 3.36 9.49 1.00 0
20260814 11:30:00   HIMAWARI9 SWIR 30 28.03 154.45 28.04 154.52 0.61 1.73 0.80 ***
20260814 08:57:28   SSMIS-16 89-92GHz 30 28.55 154.16 28.55 154.17 0.30 0.85 0.20 2
20260814 08:30:00   HIMAWARI9 IR 30 28.04 153.94 28.04 154.01 0.39 1.11 1.00 2
20260814 08:30:00   HIMAWARI9 SWIR 30 28.14 154.14 28.14 154.21 0.46 1.31 0.90 ***
20260814 07:10:22 * SSMIS-17 89-92GHz 30 28.24 154.41 28.23 154.24 0.29 0.81 3.10 2
20260814 05:30:00   HIMAWARI9 IR 30 28.19 153.57 28.20 153.65 3.36 9.49 1.00 1
20260814 05:30:00   HIMAWARI9 SWIR 30 28.14 153.74 28.15 153.82 1.67 4.73 0.10 ***
20260814 02:53:09   AMSR2 37GHz 30 *** *** *** *** 0.32 0.89 1.60 ***
20260814 02:53:09 * AMSR2 89-92GHz 30 28.50 153.80 28.51 153.82 0.35 0.99 2.10 8
20260814 02:30:00   HIMAWARI9 IR 30 27.47 152.95 27.47 153.02 3.36 9.49 0.10 1
20260814 02:30:00   HIMAWARI9 SWIR 30 28.04 153.46 28.05 153.54 3.36 9.49 0.10 ***
20260813 23:30:00   HIMAWARI9 IR 30 28.43 152.13 28.44 152.20 3.36 9.49 0.20 0
20260813 23:30:00   HIMAWARI9 SWIR 30 28.43 152.10 28.44 152.17 3.36 9.49 0.20 ***
20260813 20:30:00   HIMAWARI9 IR 31 28.50 150.94 28.50 151.01 3.36 9.49 0.20 1
20260813 20:30:00   HIMAWARI9 SWIR 31 28.40 151.71 28.40 151.78 0.76 2.14 0.10 ***
20260813 19:52:22   SSMIS-17 89-92GHz 32 29.52 152.62 29.53 152.79 0.58 1.65 2.50 1
20260813 17:30:00   HIMAWARI9 IR 33 27.30 149.91 27.31 149.99 3.36 9.49 0.20 1
20260813 17:30:00 * HIMAWARI9 SWIR 33 29.33 153.80 29.34 153.87 0.30 0.86 0.20 ***
20260813 15:54:22 * AMSR2 37GHz 34 28.04 151.54 28.02 151.41 0.30 0.84 0.50 ***
20260813 15:54:22   AMSR2 89-92GHz 34 28.19 151.99 28.17 151.86 0.45 1.26 1.80 2
20260813 14:30:00   HIMAWARI9 IR 35 29.48 152.58 29.49 152.65 0.86 2.44 0.10 49
20260813 14:30:00   HIMAWARI9 SWIR 35 29.23 152.75 29.24 152.82 0.32 0.91 0.20 ***
20260813 11:30:00   HIMAWARI9 IR 35 29.45 152.33 29.46 152.42 1.42 4.03 0.70 5
20260813 11:30:00   HIMAWARI9 SWIR 35 29.15 152.50 29.16 152.59 0.45 1.28 0.20 ***
20260813 10:54:54 * GMI 37GHz 35 27.09 150.78 27.12 150.98 0.24 0.67 1.80 ***
20260813 10:54:54   GMI 89-92GHz 35 27.39 151.47 27.42 151.66 0.47 1.32 1.90 4
20260813 09:10:44 * SSMIS-16 89-92GHz 35 27.07 150.93 27.06 150.90 0.35 0.99 1.70 5
20260813 08:30:00   HIMAWARI9 IR 35 30.03 150.49 30.05 150.58 3.36 9.49 0.10 1
20260813 08:30:00   HIMAWARI9 SWIR 35 28.80 151.22 28.82 151.32 0.69 1.95 0.20 ***
20260813 05:10:00   HIMAWARI9 IR 30 29.03 148.47 29.21 148.70 1.79 5.05 0.40 31
20260813 05:10:00   HIMAWARI9 SWIR 30 28.11 150.18 28.29 150.42 0.45 1.27 0.20 ***
20260813 03:48:05   AMSR2 37GHz 30 *** *** *** *** 0.31 0.87 1.10 ***
20260813 03:48:05   AMSR2 89-92GHz 30 *** *** *** *** 0.52 1.48 1.50 2
20260813 02:30:00   HIMAWARI9 IR 30 27.39 148.65 27.49 148.79 3.36 9.49 0.20 1
20260813 02:30:00   HIMAWARI9 SWIR 30 27.39 149.10 27.49 149.24 0.97 2.74 0.90 ***
20260813 01:04:54   GMI 37GHz 30 25.91 148.17 25.68 147.86 0.44 1.24 0.20 ***
20260813 01:04:54   GMI 89-92GHz 30 26.06 148.06 25.83 147.75 0.33 0.94 2.40 4
20260812 23:00:00   HIMAWARI9 IR 30 25.68 145.52 25.98 145.82 3.36 9.49 0.80 0
20260812 23:00:00   HIMAWARI9 SWIR 30 26.08 148.32 26.38 148.62 2.19 6.20 0.40 ***
20260812 21:53:30   SSMIS-16 89-92GHz 30 26.46 148.31 26.20 148.04 0.43 1.22 0.40 2
20260812 20:30:00   HIMAWARI9 IR 30 24.97 144.80 25.12 144.95 3.36 9.49 0.20 4
20260812 20:30:00   HIMAWARI9 SWIR 30 24.94 144.80 25.09 144.95 0.59 1.66 0.20 ***
20260812 20:07:39   SSMIS-17 89-92GHz 30 25.26 147.23 25.52 147.49 0.28 0.80 1.10 20
20260812 17:30:00   HIMAWARI9 IR 31 24.65 143.55 24.80 143.69 1.83 5.18 1.00 7
20260812 17:30:00 * HIMAWARI9 SWIR 31 24.75 146.55 24.90 146.69 0.30 0.84 0.50 ***
20260812 14:00:00   HIMAWARI9 IR 30 23.18 145.89 23.46 146.16 3.36 9.49 0.10 4
20260812 14:00:00   HIMAWARI9 SWIR 30 23.85 142.98 24.14 143.25 1.87 5.28 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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