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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
20251002 00:45:00 Metop-C ASCAT 50.0 *** *** *** *** *** *** *** ***
20251001 23:57:00 Metop-A ASCAT 50.1 36.95 -58.98 36.95 -59.10 0.87 2.45 *** ***
20251001 20:23:27 * GMI 85-92GHz 54.0 36.85 -60.27 36.85 -60.09 0.30 0.85 1.00 10.2
20251001 20:23:27 GMI 37GHz 54.0 *** *** *** *** *** *** 3.00 ***
20251001 14:15:00 Metop-A ASCAT 60.0 36.25 -64.88 36.29 -64.72 0.70 1.97 *** ***
20251001 13:24:00 Metop-C ASCAT 60.0 *** *** *** *** *** *** *** ***
20251001 10:55:03 * SSMIS-17 85-92GHz 61.8 36.40 -65.63 36.56 -65.11 0.31 0.87 1.30 5.1
20251001 01:06:00 * Metop-C ASCAT 70.0 34.69 -68.81 34.49 -68.99 0.17 0.47 *** ***
20250930 23:20:35 SSMIS-16 85-92GHz 70.0 34.18 -68.63 34.24 -68.56 0.23 0.65 2.10 8.2
20250930 21:03:26 GMI 85-92GHz 70.0 33.82 -69.44 33.76 -69.50 0.22 0.62 2.20 21.2
20250930 21:03:26 * GMI 37GHz 70.0 34.02 -69.62 33.96 -69.68 0.14 0.41 0.90 ***
20250930 17:31:36 AMSR2 85-92GHz 70.0 33.10 -69.87 33.14 -69.87 0.21 0.59 2.50 34.2
20250930 17:31:36 * AMSR2 37GHz 70.0 33.25 -70.11 33.29 -70.11 0.16 0.45 1.00 ***
20250930 14:39:00 * Metop-A ASCAT 72.8 32.97 -69.98 32.98 -69.99 0.14 0.41 *** ***
20250930 13:48:00 Metop-C ASCAT 73.5 *** *** *** *** *** *** *** ***
20250930 11:18:26 GMI 85-92GHz 76.7 32.16 -69.76 32.25 -69.78 0.15 0.42 2.20 36.9
20250930 11:18:26 * GMI 37GHz 76.7 32.11 -69.88 32.20 -69.90 0.12 0.34 0.70 ***
20250930 06:30:33 AMSR2 85-92GHz 89.2 30.91 -69.62 30.72 -69.53 0.16 0.45 1.40 6.6
20250930 06:30:33 * AMSR2 37GHz 89.2 30.96 -69.50 30.77 -69.42 0.11 0.32 0.70 ***
20250930 01:24:00 * Metop-C ASCAT 101.5 29.92 -68.89 30.25 -69.11 0.14 0.40 *** ***
20250930 00:39:00 Metop-A ASCAT 103.9 *** *** *** *** *** *** *** ***
20250930 00:36:00 Metop-A ASCAT 104.0 29.51 -68.71 29.34 -68.61 0.21 0.60 *** ***
20250929 21:48:27 * GMI 85-92GHz 110.5 29.17 -68.66 29.00 -68.57 0.14 0.40 1.10 14.6
20250929 21:48:27 GMI 37GHz 110.5 29.12 -68.43 28.95 -68.35 0.14 0.41 0.40 ***
20250929 13:21:00 * Metop-A ASCAT 123.9 27.71 -67.50 27.94 -67.65 0.16 0.46 *** ***
20250929 05:48:49 * AMSR2 85-92GHz 115.2 26.62 -66.58 26.61 -66.57 0.11 0.31 0.70 100.0
20250929 05:48:49 AMSR2 37GHz 115.2 26.57 -66.52 26.56 -66.51 0.12 0.34 0.30 ***
20250929 01:45:00 Metop-C ASCAT 118.5 *** *** *** *** *** *** *** ***
20250929 00:57:00 Metop-A ASCAT 120.0 *** *** *** *** *** *** *** ***
20250928 17:41:15 * AMSR2 85-92GHz 125.3 24.96 -64.80 24.96 -64.81 0.10 0.27 0.80 100.0
20250928 17:41:15 AMSR2 37GHz 125.3 24.96 -64.80 24.96 -64.81 0.11 0.32 0.70 ***
20250928 14:30:00 * Metop-C ASCAT 127.9 24.54 -64.32 24.59 -64.36 0.16 0.44 *** ***
20250928 11:03:26 GMI 85-92GHz 130.8 *** *** *** *** *** *** 1.50 ***
20250928 11:03:26 GMI 37GHz 130.8 *** *** *** *** *** *** 0.60 ***
20250928 01:15:00 * Metop-A ASCAT 139.0 23.21 -61.89 23.08 -61.61 0.15 0.44 *** ***
20250927 21:38:26 * GMI 85-92GHz 138.0 22.97 -61.19 22.90 -61.06 0.10 0.30 0.20 100.0
20250927 21:38:26 GMI 37GHz 138.0 22.92 -61.24 22.85 -61.12 0.12 0.33 0.20 ***
20250927 20:13:13 SSMIS-18 85-92GHz 136.9 22.82 -61.20 22.86 -61.27 0.12 0.34 0.20 100.0
20250927 16:57:39 * AMSR2 85-92GHz 133.3 22.66 -60.58 22.69 -60.71 0.10 0.28 0.20 100.0
20250927 16:57:39 AMSR2 37GHz 133.3 22.66 -60.53 22.69 -60.66 0.12 0.34 0.20 ***
20250927 13:12:00 * Metop-C ASCAT 127.0 22.54 -59.94 22.49 -59.72 0.15 0.42 *** ***
20250927 11:48:27 GMI 85-92GHz 125.0 *** *** *** *** *** *** 3.00 ***
20250927 11:48:27 GMI 37GHz 125.0 *** *** *** *** *** *** 3.00 ***
20250927 06:02:04 * AMSR2 85-92GHz 125.0 22.20 -58.96 22.19 -58.93 0.10 0.28 0.20 100.0
20250927 06:02:04 AMSR2 37GHz 125.0 22.20 -58.96 22.19 -58.93 0.12 0.34 0.20 ***
20250927 00:45:00 * Metop-C ASCAT 120.6 22.05 -58.41 22.05 -58.32 0.13 0.37 *** ***
20250926 22:23:25 GMI 85-92GHz 113.3 *** *** *** *** *** *** 2.20 ***
20250926 22:23:25 GMI 37GHz 113.3 *** *** *** *** *** *** 0.30 ***
20250926 05:19:04 AMSR2 85-92GHz 63.9 21.95 -57.03 21.95 -57.04 0.11 0.31 0.50 100.0
20250926 05:19:04 * AMSR2 37GHz 63.9 21.85 -56.97 21.85 -56.98 0.10 0.29 0.20 ***
20250926 00:15:00 * Metop-A ASCAT 55.0 21.56 -56.90 21.56 -56.89 0.13 0.38 *** ***
20250925 17:09:19 * AMSR2 85-92GHz 48.6 21.65 -56.28 21.69 -56.30 0.15 0.44 0.50 91.9
20250925 17:09:19 AMSR2 37GHz 48.6 21.40 -56.77 21.44 -56.78 0.23 0.64 0.40 ***
20250925 11:38:27 GMI 85-92GHz 40.0 20.94 -56.84 20.94 -56.85 0.51 1.44 0.30 4.9
20250925 11:38:27 * GMI 37GHz 40.0 21.04 -56.79 21.04 -56.80 0.39 1.11 0.40 ***
20250925 07:43:33 * SSMIS-18 85-92GHz 40.0 20.97 -56.37 21.02 -56.47 0.26 0.75 1.30 20.2
20250925 01:24:00 * Metop-C ASCAT 40.0 20.25 -55.86 20.37 -56.06 0.22 0.63 *** ***
20250925 00:39:00 Metop-A ASCAT 40.0 *** *** *** *** *** *** *** ***
20250925 00:36:00 Metop-A ASCAT 40.0 *** *** *** *** *** *** *** ***
20250924 22:13:27 * GMI 85-92GHz 38.5 20.29 -55.25 20.12 -55.03 0.44 1.25 0.10 1.7
20250924 22:13:27 GMI 37GHz 38.5 *** *** *** *** *** *** 2.00 ***

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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