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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
20260105 04:48:00 * Metop-A ASCAT 63.5 -16.75 56.01 -16.76 55.92 0.20 0.57 *** ***
20260104 21:33:36 AMSR2 85-92GHz 62.0 -15.90 57.34 -15.88 57.48 0.42 1.17 0.10 8.7
20260104 21:33:36 * AMSR2 37GHz 62.0 -16.25 57.34 -16.23 57.48 0.20 0.58 0.20 ***
20260104 18:18:00 Metop-C ASCAT 61.3 -16.28 58.35 -16.26 58.46 0.40 1.12 *** ***
20260104 17:39:00 * Metop-A ASCAT 61.2 -15.77 58.65 -15.76 58.67 0.20 0.57 *** ***
20260104 14:34:21 SSMIS-17 85-92GHz 60.5 -15.70 58.65 -15.70 58.66 0.52 1.47 0.20 3.2
20260104 10:47:27 GMI 85-92GHz 59.7 -16.22 59.39 -16.24 59.29 0.55 1.55 0.10 5.6
20260104 10:47:27 * GMI 37GHz 59.7 -16.02 59.70 -16.04 59.60 0.33 0.93 0.20 ***
20260104 05:48:00 * Metop-C ASCAT 58.7 -15.50 60.86 -15.49 60.90 0.25 0.72 *** ***
20260104 05:09:00 Metop-A ASCAT 58.6 -15.38 59.66 -15.39 59.60 0.51 1.45 *** ***
20260103 21:22:26 GMI 85-92GHz 57.0 *** *** *** *** *** *** 0.10 ***
20260103 21:22:26 * GMI 37GHz 57.0 -15.67 62.30 -15.65 62.43 0.16 0.44 1.00 ***
20260103 20:50:30 AMSR2 85-92GHz 56.8 *** *** *** *** *** *** 0.10 ***
20260103 20:50:30 AMSR2 37GHz 56.8 *** *** *** *** *** *** 0.50 ***
20260103 17:00:00 Metop-C ASCAT 56.0 *** *** *** *** *** *** *** ***
20260103 14:41:00 * SSMIS-16 85-92GHz 55.6 -15.51 62.79 -15.51 62.81 0.08 0.23 3.00 0.0
20260103 04:27:00 Metop-C ASCAT 56.6 *** *** *** *** *** *** *** ***
20260102 22:07:26 GMI 85-92GHz 57.9 *** *** *** *** *** *** 2.10 ***
20260102 22:07:26 GMI 37GHz 57.9 *** *** *** *** *** *** 3.00 ***
20260102 16:39:00 Metop-A ASCAT 59.0 *** *** *** *** *** *** *** ***
20260102 13:21:45 * SSMIS-17 85-92GHz 59.7 -16.47 65.04 -16.45 64.94 0.34 0.96 3.00 0.0
20260102 12:18:53 * SSMIS-18 85-92GHz 59.9 -15.09 65.81 -15.11 65.89 0.34 0.97 2.80 5.0
20260102 10:37:27 * GMI 85-92GHz 61.1 -15.18 66.02 -15.16 65.94 0.41 1.16 0.30 23.7
20260102 10:37:27 GMI 37GHz 61.1 *** *** *** *** *** *** 0.60 ***
20260102 04:48:00 Metop-C ASCAT 66.0 *** *** *** *** *** *** *** ***
20260102 04:09:00 Metop-A ASCAT 66.5 *** *** *** *** *** *** *** ***
20260101 23:45:08 * SSMIS-18 85-92GHz 70.2 -16.31 66.40 -16.32 66.41 0.27 0.77 3.00 0.7
20260101 21:02:36 * AMSR2 85-92GHz 72.5 -16.52 66.49 -16.54 66.53 0.22 0.61 0.20 37.5
20260101 21:02:36 AMSR2 37GHz 72.5 *** *** *** *** *** *** 0.20 ***
20260101 17:00:00 * Metop-A ASCAT 75.8 -15.84 67.87 -15.82 67.84 0.17 0.49 *** ***
20260101 13:35:48 * SSMIS-17 85-92GHz 78.7 -16.54 66.88 -16.52 66.81 0.17 0.49 0.30 15.4
20260101 11:17:26 * GMI 85-92GHz 80.6 -16.40 67.18 -16.40 67.17 0.15 0.43 3.00 1.5
20260101 11:17:26 GMI 37GHz 80.6 *** *** *** *** *** *** 2.00 ***
20260101 05:12:00 Metop-C ASCAT 85.7 *** *** *** *** *** *** *** ***
20260101 05:09:00 * Metop-C ASCAT 85.7 -15.90 68.85 -15.90 68.81 0.19 0.55 *** ***
20260101 04:30:00 Metop-A ASCAT 86.2 -15.90 68.87 -15.90 68.76 0.19 0.55 *** ***
20260101 01:01:27 * SSMIS-17 85-92GHz 89.1 -15.90 68.45 -15.90 68.27 0.12 0.34 3.00 -0.0
20251231 21:57:26 GMI 85-92GHz 92.3 -16.11 68.80 -16.05 69.01 0.12 0.34 0.40 78.9
20251231 21:57:26 GMI 37GHz 92.3 -16.41 68.95 -16.35 69.17 0.16 0.44 1.20 ***
20251231 20:19:43 * AMSR2 85-92GHz 94.1 -15.99 69.14 -16.00 69.11 0.12 0.35 3.00 0.0
20251231 20:19:43 AMSR2 37GHz 94.1 -16.34 69.30 -16.35 69.27 0.14 0.39 3.00 ***
20251231 13:49:33 * SSMIS-17 85-92GHz 100.0 -15.86 70.39 -15.88 70.30 0.13 0.36 0.30 93.5
20251231 01:15:05 * SSMIS-17 85-92GHz 104.5 -14.90 72.87 -14.97 72.50 0.12 0.33 0.20 90.6
20251230 22:32:06 * SSMIS-18 85-92GHz 106.8 -14.90 73.54 -14.93 73.32 0.11 0.31 0.10 100.0
20251230 13:56:16 * SSMIS-16 85-92GHz 117.6 -14.65 75.34 -14.66 75.22 0.11 0.32 0.10 100.0
20251230 11:21:22 SSMIS-18 85-92GHz 119.5 -14.63 75.83 -14.63 75.79 0.11 0.32 0.10 100.0
20251230 11:07:26 * GMI 85-92GHz 119.3 -14.57 75.87 -14.58 75.79 0.10 0.28 0.20 100.0
20251230 11:07:26 GMI 37GHz 119.3 -14.52 75.92 -14.53 75.84 0.10 0.29 0.50 ***
20251230 03:30:00 Metop-A ASCAT 112.9 *** *** *** *** *** *** *** ***
20251230 01:21:20 * SSMIS-16 85-92GHz 111.1 -14.20 78.01 -14.25 77.77 0.11 0.30 0.20 100.0
20251229 22:45:28 * SSMIS-18 85-92GHz 111.0 -14.18 78.54 -14.22 78.39 0.10 0.28 0.20 100.0
20251229 21:47:26 GMI 85-92GHz 111.8 -14.15 78.62 -14.08 78.86 0.09 0.26 0.20 100.0
20251229 21:47:26 GMI 37GHz 111.8 -14.25 78.57 -14.18 78.81 0.11 0.31 0.60 ***
20251229 20:31:07 * AMSR2 85-92GHz 112.9 -14.15 78.86 -14.14 78.86 0.09 0.26 0.20 100.0
20251229 20:31:07 AMSR2 37GHz 112.9 -14.25 78.91 -14.24 78.91 0.11 0.31 0.80 ***
20251229 16:21:00 Metop-A ASCAT 116.4 *** *** *** *** *** *** *** ***
20251229 14:10:51 SSMIS-16 85-92GHz 119.1 *** *** *** *** *** *** 0.10 ***
20251229 12:37:53 * SSMIS-17 85-92GHz 119.7 -13.81 80.34 -13.78 80.54 0.11 0.32 0.10 72.3
20251229 08:02:11 * AMSR2 85-92GHz 115.0 -13.63 81.06 -13.64 80.98 0.09 0.27 0.10 100.0
20251229 08:02:11 AMSR2 37GHz 115.0 -13.58 81.06 -13.59 80.98 0.11 0.32 2.20 ***
20251229 04:30:00 Metop-C ASCAT 110.6 *** *** *** *** *** *** *** ***
20251229 00:02:04 * SSMIS-17 85-92GHz 105.0 -13.40 82.39 -13.39 82.49 0.12 0.33 0.10 86.3
20251228 19:47:53 AMSR2 85-92GHz 94.5 -13.23 83.14 -13.26 82.97 0.11 0.30 0.10 100.0
20251228 19:47:53 * AMSR2 37GHz 94.5 -13.38 83.14 -13.41 82.97 0.11 0.30 0.30 ***
20251228 15:45:00 * Metop-C ASCAT 84.4 -13.07 83.84 -13.03 84.02 0.20 0.56 *** ***
20251228 15:06:00 Metop-A ASCAT 82.7 *** *** *** *** *** *** *** ***
20251228 10:57:26 * GMI 85-92GHz 75.0 -12.90 84.65 -12.90 84.65 0.08 0.22 0.30 100.0
20251228 10:57:26 GMI 37GHz 75.0 -13.00 84.70 -13.00 84.70 0.13 0.36 0.20 ***
20251228 10:08:40 * SSMIS-18 85-92GHz 75.0 -12.95 84.81 -12.95 84.81 0.07 0.21 0.20 100.0

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: Summary table, ARCHER Track table, ARCHER Track Image Archive, Intensity Estimation, ARCHER-ERC page, F-Decks

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