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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
20260817 20:50:20   GOES18 IR 20 16.90 -143.79 16.90 -143.82 3.36 9.49 0.20 0
20260817 20:50:20   GOES18 SWIR 20 16.95 -143.64 16.95 -143.66 3.36 9.49 0.30 ***
20260817 17:50:20   GOES18 IR 20 16.85 -143.24 16.85 -143.26 3.36 9.49 0.70 1
20260817 17:50:20   GOES18 SWIR 20 16.85 -143.13 16.85 -143.16 1.04 2.94 0.60 ***
20260817 17:22:39   SSMIS-16 89-92GHz 20 17.29 -143.16 17.30 -143.27 0.25 0.72 1.50 3
20260817 14:50:22   GOES18 IR 20 16.70 -143.32 16.70 -143.34 3.36 9.49 0.50 1
20260817 14:50:22   GOES18 SWIR 20 16.70 -142.74 16.70 -142.77 1.33 3.75 0.40 ***
20260817 11:50:22   GOES18 IR 20 16.40 -142.64 16.40 -142.67 1.72 4.86 1.00 1
20260817 11:50:22   GOES18 SWIR 20 16.20 -142.46 16.20 -142.49 3.36 9.49 0.80 ***
20260817 08:50:22   GOES18 IR 21 16.39 -142.14 16.40 -142.16 0.82 2.33 1.00 1
20260817 08:50:22   GOES18 SWIR 21 16.34 -142.09 16.35 -142.11 0.63 1.77 1.00 ***
20260817 05:50:22   GOES18 IR 22 16.59 -141.85 16.59 -141.88 3.36 9.49 0.10 1
20260817 05:50:22   GOES18 SWIR 22 16.59 -141.82 16.59 -141.85 0.45 1.26 0.10 ***
20260817 04:47:17 * SSMIS-16 89-92GHz 23 16.52 -141.50 16.54 -141.70 0.21 0.60 0.20 2
20260817 02:59:57 * SSMIS-17 89-92GHz 23 16.44 -140.96 16.44 -140.96 0.27 0.76 1.40 3
20260817 02:50:22   GOES18 IR 23 16.24 -141.20 16.24 -141.22 1.12 3.17 1.00 9
20260817 02:50:22   GOES18 SWIR 23 16.31 -141.07 16.32 -141.09 0.68 1.92 1.00 ***
20260816 23:50:22   GOES18 IR 25 16.30 -140.87 16.30 -140.90 0.55 1.56 1.00 6
20260816 23:50:22   GOES18 SWIR 25 16.25 -140.82 16.25 -140.85 2.22 6.26 0.90 ***
20260816 22:24:07   AMSR2 37GHz 25 16.53 -140.38 16.52 -140.15 0.38 1.09 0.60 ***
20260816 22:24:07   AMSR2 89-92GHz 25 16.53 -140.38 16.52 -140.15 0.30 0.84 3.80 3
20260816 20:50:22   GOES18 IR 25 16.47 -140.39 16.47 -140.41 3.36 9.49 1.00 2
20260816 20:50:22   GOES18 SWIR 25 16.47 -140.33 16.47 -140.36 2.51 7.08 0.90 ***
20260816 19:09:54   GMI 37GHz 25 16.46 -139.91 16.45 -139.71 0.26 0.74 1.20 ***
20260816 19:09:54 * GMI 89-92GHz 25 16.51 -140.01 16.50 -139.82 0.25 0.72 0.10 7
20260816 17:50:22   GOES18 IR 25 16.67 -140.05 16.68 -140.08 0.90 2.55 0.70 30
20260816 17:50:22   GOES18 SWIR 25 16.62 -139.90 16.63 -139.92 1.02 2.88 0.70 ***
20260816 15:48:21   SSMIS-17 89-92GHz 25 16.58 -139.40 16.58 -139.27 0.48 1.36 0.60 6
20260816 14:50:22   GOES18 IR 25 14.63 -139.76 14.63 -139.79 3.36 9.49 0.10 0
20260816 14:50:22   GOES18 SWIR 25 14.45 -139.11 14.45 -139.13 1.44 4.07 0.10 ***
20260816 13:30:39 * SSMIS-18 89-92GHz 25 16.37 -139.17 16.38 -139.41 0.32 0.90 3.00 6
20260816 11:50:22   GOES18 IR 25 14.75 -138.71 14.75 -138.74 2.35 6.63 0.20 3
20260816 11:50:22   GOES18 SWIR 25 14.62 -138.51 14.63 -138.54 0.90 2.55 0.20 ***
20260816 11:31:53   AMSR2 37GHz 25 *** *** *** *** 0.28 0.79 5.00 ***
20260816 11:31:53   AMSR2 89-92GHz 25 *** *** *** *** 0.60 1.71 5.00 0
20260816 08:50:22   GOES18 IR 25 14.40 -138.00 14.41 -138.03 3.12 8.82 0.10 1
20260816 08:50:22   GOES18 SWIR 25 14.45 -137.85 14.46 -137.88 0.62 1.74 0.20 ***
20260816 05:50:22   GOES18 IR 25 15.50 -137.21 15.50 -137.25 3.36 9.49 0.30 1
20260816 05:50:22   GOES18 SWIR 25 14.65 -137.06 14.65 -137.09 2.21 6.24 0.40 ***
20260816 05:44:55   GMI 37GHz 25 *** *** *** *** 0.45 1.27 2.10 ***
20260816 05:44:55   GMI 89-92GHz 25 16.10 -137.04 16.10 -137.09 0.46 1.31 2.70 1
20260816 03:13:48 * SSMIS-17 89-92GHz 25 16.25 -136.96 16.25 -136.92 0.35 0.99 0.60 2
20260816 02:50:22   GOES18 IR 25 14.99 -136.26 15.00 -136.29 3.36 9.49 0.20 1
20260816 02:50:22   GOES18 SWIR 25 14.89 -136.57 14.90 -136.61 1.12 3.17 0.10 ***
20260815 23:50:22   GOES18 IR 25 15.27 -136.44 15.27 -136.47 3.36 9.49 0.20 1
20260815 23:50:22   GOES18 SWIR 25 14.95 -136.26 14.95 -136.29 3.36 9.49 0.80 ***
20260815 20:50:22   GOES18 IR 26 15.55 -135.94 15.56 -135.97 3.36 9.49 1.00 0
20260815 20:50:22   GOES18 SWIR 26 15.48 -135.89 15.48 -135.92 3.36 9.49 1.00 ***
20260815 17:50:22   GOES18 IR 28 15.32 -135.57 15.32 -135.60 3.36 9.49 1.00 0
20260815 17:50:22   GOES18 SWIR 28 15.72 -135.36 15.72 -135.39 2.24 6.33 1.00 ***
20260815 14:50:22   GOES18 IR 26 15.82 -134.80 15.82 -134.83 0.94 2.66 0.50 4
20260815 14:50:22   GOES18 SWIR 26 15.82 -134.85 15.82 -134.88 1.55 4.39 0.40 ***
20260815 13:44:32 * SSMIS-18 89-92GHz 27 16.36 -134.86 16.36 -135.07 0.40 1.14 0.10 1
20260815 11:50:22   GOES18 IR 28 16.09 -134.39 16.09 -134.43 3.36 9.49 0.10 2
20260815 11:50:22   GOES18 SWIR 28 16.24 -133.98 16.24 -134.01 1.52 4.31 0.50 ***
20260815 10:48:37   AMSR2 37GHz 28 16.03 -133.99 15.99 -134.23 0.58 1.65 3.30 ***
20260815 10:48:37 * AMSR2 89-92GHz 28 16.48 -134.31 16.44 -134.54 0.24 0.67 0.40 6
20260815 08:50:22   GOES18 IR 30 16.07 -134.44 16.07 -134.47 3.36 9.49 0.50 1
20260815 08:50:22   GOES18 SWIR 30 16.12 -133.94 16.12 -133.98 1.46 4.12 0.10 ***
20260815 05:50:22   GOES18 IR 30 15.89 -135.49 15.90 -135.52 3.36 9.49 0.20 2
20260815 05:50:22   GOES18 SWIR 30 16.04 -133.72 16.05 -133.75 0.76 2.15 0.80 ***
20260815 03:34:40 * SSMIS-16 89-92GHz 30 16.41 -133.02 16.39 -132.92 0.28 0.79 0.40 3
20260815 02:50:22   GOES18 IR 30 15.24 -134.79 15.25 -134.82 1.34 3.79 0.40 1
20260815 02:50:22   GOES18 SWIR 30 16.29 -130.82 16.30 -130.85 3.36 9.49 0.60 ***
20260815 01:09:07 * SSMIS-18 89-92GHz 30 16.27 -133.02 16.23 -132.81 0.35 1.00 0.80 3
20260814 23:50:22   GOES18 IR 30 15.33 -134.39 15.35 -134.39 1.31 3.71 0.20 4
20260814 23:50:22   GOES18 SWIR 30 15.96 -131.12 15.97 -131.12 1.75 4.94 0.20 ***
20260814 22:35:56   AMSR2 37GHz 30 15.59 -132.32 15.71 -132.34 0.36 1.03 3.10 ***
20260814 22:35:56   AMSR2 89-92GHz 30 15.94 -132.32 16.06 -132.34 0.38 1.09 2.50 3
20260814 20:50:22   GOES18 IR 31 16.70 -133.82 16.71 -133.83 3.36 9.49 0.90 4
20260814 20:50:22   GOES18 SWIR 31 16.55 -133.15 16.56 -133.15 3.31 9.36 0.80 ***
20260814 18:54:54   GMI 37GHz 32 *** *** *** *** 0.47 1.34 3.50 ***
20260814 18:54:54   GMI 89-92GHz 32 16.80 -132.52 16.72 -132.50 0.53 1.51 1.30 3
20260814 17:50:22   GOES18 IR 33 15.60 -134.33 15.60 -134.33 3.36 9.49 0.20 1
20260814 17:50:22   GOES18 SWIR 33 15.65 -131.32 15.65 -131.32 1.00 2.83 1.00 ***
20260814 14:50:22   GOES18 IR 31 15.69 -134.21 15.69 -134.21 3.36 9.49 1.00 1
20260814 14:50:22   GOES18 SWIR 31 16.34 -131.17 16.34 -131.17 1.91 5.40 0.50 ***
20260814 14:36:09   SSMIS-17 89-92GHz 35 15.41 -132.03 15.41 -132.03 0.50 1.40 0.50 0
20260814 11:50:22   GOES18 IR 33 15.59 -132.18 15.56 -132.18 3.36 9.49 1.00 6
20260814 11:50:22   GOES18 SWIR 33 15.61 -132.18 15.59 -132.18 3.36 9.49 0.90 ***
20260814 10:05:46 * AMSR2 37GHz 34 15.61 -132.07 15.77 -132.05 0.27 0.75 3.10 ***
20260814 10:05:46   AMSR2 89-92GHz 34 15.91 -131.70 16.07 -131.69 0.30 0.84 1.20 8
20260814 08:50:22   GOES18 IR 31 15.57 -132.11 15.55 -132.11 0.54 1.52 0.80 7
20260814 08:50:22   GOES18 SWIR 31 15.67 -132.16 15.65 -132.17 0.60 1.71 0.80 ***
20260814 05:50:22   GOES18 IR 33 15.68 -132.04 15.66 -132.04 3.36 9.49 0.70 2
20260814 05:50:22   GOES18 SWIR 33 15.83 -132.04 15.81 -132.04 3.36 9.49 0.50 ***
20260814 03:48:26 * SSMIS-16 89-92GHz 34 16.78 -131.80 16.86 -131.80 0.25 0.72 1.90 3
20260814 02:50:22   GOES18 IR 36 15.79 -132.66 15.78 -132.66 3.36 9.49 1.00 7
20260814 02:50:22   GOES18 SWIR 36 15.82 -132.68 15.80 -132.68 1.19 3.37 0.90 ***
20260814 02:01:31   SSMIS-17 89-92GHz 37 17.01 -131.89 16.91 -131.89 0.35 1.00 2.00 3
20260814 01:25:35   SSMIS-18 89-92GHz 37 17.09 -132.14 17.24 -132.14 0.25 0.71 2.70 3
20260813 23:50:22   GOES18 IR 38 17.03 -132.31 17.02 -132.31 3.36 9.49 0.10 8
20260813 23:50:22   GOES18 SWIR 38 16.98 -131.99 16.97 -131.99 0.74 2.10 0.70 ***
20260813 21:53:26   AMSR2 37GHz 39 17.05 -131.90 17.11 -131.90 0.33 0.92 0.60 ***
20260813 21:53:26   AMSR2 89-92GHz 39 17.10 -131.95 17.16 -131.95 0.30 0.84 3.10 4
20260813 20:50:22   GOES18 IR 40 17.89 -132.98 17.88 -132.98 3.36 9.49 0.10 10
20260813 20:50:22   GOES18 SWIR 40 17.29 -132.59 17.28 -132.59 3.36 9.49 0.50 ***
20260813 19:39:55   GMI 37GHz 40 17.25 -131.99 17.16 -131.99 0.40 1.13 2.30 ***
20260813 19:39:55 * GMI 89-92GHz 40 17.40 -132.05 17.31 -132.05 0.29 0.81 3.80 4
20260813 17:50:22   GOES18 IR 40 18.38 -133.94 18.37 -133.94 3.36 9.49 0.40 3
20260813 17:50:22   GOES18 SWIR 40 17.63 -131.23 17.62 -131.23 0.87 2.45 0.60 ***
20260813 16:36:18   SSMIS-16 89-92GHz 40 *** *** *** *** 0.38 1.08 5.00 0
20260813 14:50:22   GOES18 IR 35 18.05 -134.04 18.04 -134.04 1.12 3.18 0.60 7
20260813 14:50:22   GOES18 SWIR 35 18.00 -134.04 17.99 -134.04 1.97 5.58 0.30 ***
20260813 14:49:42   SSMIS-17 89-92GHz 40 *** *** *** *** 0.36 1.03 2.90 7
20260813 11:50:22   GOES18 IR 35 18.69 -133.94 18.69 -133.94 0.86 2.44 0.20 7
20260813 11:50:22   GOES18 SWIR 35 18.36 -134.02 18.36 -134.02 3.36 9.49 0.10 ***
20260813 11:00:31   AMSR2 37GHz 35 *** *** *** *** 0.49 1.38 5.00 ***
20260813 11:00:31   AMSR2 89-92GHz 35 18.09 -132.09 18.09 -132.10 0.42 1.19 0.70 10
20260813 08:50:21   GOES18 IR 33 18.46 -133.89 18.46 -133.89 0.89 2.51 0.30 10
20260813 08:50:21   GOES18 SWIR 33 18.68 -129.78 18.68 -129.78 1.92 5.43 0.30 ***
20260813 06:14:54   GMI 37GHz 31 18.70 -131.06 18.70 -131.05 0.42 1.18 0.20 ***
20260813 06:14:54   GMI 89-92GHz 31 *** *** *** *** 0.43 1.22 1.00 3
20260813 05:50:21   GOES18 IR 31 18.30 -129.65 18.30 -129.66 3.36 9.49 0.10 4
20260813 05:50:21   GOES18 SWIR 31 18.57 -129.68 18.58 -129.68 0.78 2.20 0.30 ***
20260813 04:02:47   SSMIS-16 89-92GHz 30 *** *** *** *** 0.50 1.42 2.50 2
20260813 02:50:21   GOES18 IR 30 17.70 -132.07 17.70 -132.07 3.36 9.49 0.50 33
20260813 02:50:21   GOES18 SWIR 30 17.47 -131.94 17.47 -131.94 3.36 9.49 0.70 ***

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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