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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
20250828 23:09:00 Metop-C ASCAT 40.0 *** *** *** *** *** *** *** ***
20250828 22:18:00 * Metop-A ASCAT 40.0 43.98 -37.23 44.21 -36.46 0.37 1.04 *** ***
20250828 20:15:47 * SSMIS-17 85-92GHz 40.0 42.96 -37.61 43.04 -37.36 0.35 0.99 2.80 3.1
20250828 15:12:06 AMSR2 85-92GHz 40.0 42.16 -39.86 42.08 -40.08 0.38 1.08 2.90 3.1
20250828 15:12:06 AMSR2 37GHz 40.0 42.16 -40.74 42.08 -40.96 0.40 1.14 0.80 ***
20250828 13:27:00 Metop-C ASCAT 40.0 42.21 -41.77 42.43 -41.16 0.36 1.01 *** ***
20250828 12:39:00 * Metop-A ASCAT 40.0 41.77 -42.07 41.61 -42.49 0.15 0.43 *** ***
20250828 12:36:00 * Metop-A ASCAT 40.0 41.81 -42.03 41.66 -42.42 0.15 0.43 *** ***
20250828 09:22:55 SSMIS-16 85-92GHz 41.5 41.24 -42.51 41.10 -42.80 0.47 1.34 1.40 1.8
20250828 08:50:08 SSMIS-17 85-92GHz 41.8 41.47 -43.22 41.45 -43.26 0.39 1.11 2.10 2.6
20250828 07:27:45 * SSMIS-18 85-92GHz 42.5 41.08 -43.51 41.35 -42.93 0.33 0.94 2.90 3.0
20250828 05:03:27 GMI 85-92GHz 43.9 40.46 -44.64 40.59 -44.37 0.33 0.92 1.80 4.5
20250828 05:03:27 * GMI 37GHz 43.9 40.46 -45.10 40.59 -44.83 0.32 0.90 0.70 ***
20250828 00:21:00 Metop-A ASCAT 45.0 39.74 -46.85 39.67 -47.03 0.29 0.81 *** ***
20250828 00:18:00 * Metop-A ASCAT 45.0 39.73 -46.86 39.67 -47.03 0.29 0.81 *** ***
20250827 23:30:00 * Metop-C ASCAT 45.0 39.49 -46.84 39.52 -46.77 0.14 0.39 *** ***
20250827 19:07:31 SSMIS-18 85-92GHz 45.0 38.85 -47.90 38.67 -48.38 0.35 0.99 2.10 8.0
20250827 16:06:37 AMSR2 85-92GHz 43.4 38.52 -48.88 38.32 -49.38 0.28 0.78 1.80 14.1
20250827 16:06:37 * AMSR2 37GHz 43.4 38.62 -49.27 38.42 -49.76 0.21 0.61 0.60 ***
20250827 13:48:00 * Metop-C ASCAT 41.5 38.30 -49.90 38.42 -49.58 0.22 0.63 *** ***
20250827 12:57:00 Metop-A ASCAT 40.0 *** *** *** *** *** *** *** ***
20250827 07:42:59 SSMIS-18 85-92GHz 40.0 38.60 -51.19 38.58 -51.04 0.47 1.34 1.20 2.6
20250827 05:48:26 GMI 85-92GHz 40.0 38.75 -51.57 38.75 -51.58 0.50 1.41 1.80 1.5
20250827 05:48:26 * GMI 37GHz 40.0 38.85 -51.63 38.85 -51.64 0.37 1.03 1.30 ***
20250827 05:02:18 AMSR2 85-92GHz 40.0 38.60 -51.22 38.60 -51.08 0.49 1.38 1.90 2.5
20250827 05:02:18 * AMSR2 37GHz 40.0 38.85 -51.60 38.85 -51.46 0.25 0.71 1.30 ***
20250827 00:42:00 Metop-A ASCAT 40.0 38.31 -52.86 38.29 -53.07 0.39 1.11 *** ***
20250827 00:39:00 * Metop-A ASCAT 40.0 38.26 -52.81 38.23 -53.00 0.39 1.11 *** ***
20250826 23:51:00 Metop-C ASCAT 39.9 *** *** *** *** *** *** *** ***
20250826 20:43:39 * SSMIS-17 85-92GHz 37.3 38.33 -53.56 38.33 -53.55 0.35 0.99 1.10 1.7
20250826 17:01:39 * AMSR2 85-92GHz 35.0 37.77 -54.25 37.82 -54.11 0.32 0.90 0.90 3.7
20250826 17:01:39 AMSR2 37GHz 35.0 *** *** *** *** *** *** 0.80 ***
20250826 14:09:00 * Metop-C ASCAT 35.0 37.66 -55.01 37.71 -54.89 0.29 0.82 *** ***
20250826 13:21:00 Metop-A ASCAT 35.0 *** *** *** *** *** *** *** ***
20250826 07:58:03 SSMIS-18 85-92GHz 38.4 36.93 -55.24 37.04 -55.17 0.28 0.79 2.10 5.1
20250826 06:28:26 GMI 85-92GHz 40.0 36.58 -55.56 36.47 -55.65 0.31 0.88 1.30 3.8
20250826 06:28:26 * GMI 37GHz 40.0 36.38 -56.18 36.27 -56.27 0.18 0.52 0.80 ***
20250826 01:03:00 Metop-A ASCAT 45.0 35.87 -57.00 35.68 -57.22 0.52 1.46 *** ***
20250826 01:00:00 * Metop-A ASCAT 45.0 35.86 -57.01 35.68 -57.22 0.28 0.80 *** ***
20250825 21:28:30 * SSMIS-16 85-92GHz 47.1 35.42 -56.91 35.32 -57.01 0.26 0.73 2.70 18.1
20250825 20:56:59 SSMIS-17 85-92GHz 47.5 35.40 -57.11 35.37 -57.13 0.31 0.89 2.90 6.7
20250825 19:34:44 * SSMIS-18 85-92GHz 48.7 34.82 -57.28 34.97 -57.13 0.31 0.87 2.20 5.8
20250825 08:13:22 SSMIS-18 85-92GHz 46.9 33.64 -58.66 33.69 -58.59 0.63 1.77 1.30 0.2
20250825 07:08:27 * GMI 85-92GHz 45.0 33.34 -59.23 33.18 -59.39 0.38 1.07 1.50 6.7
20250825 07:08:27 GMI 37GHz 45.0 *** *** *** *** *** *** 1.10 ***
20250825 05:16:16 AMSR2 85-92GHz 45.0 *** *** *** *** *** *** 1.80 ***
20250825 05:16:16 * AMSR2 37GHz 45.0 32.87 -59.05 32.94 -59.00 0.19 0.53 2.20 ***
20250825 00:33:00 Metop-C ASCAT 45.0 *** *** *** *** *** *** *** ***
20250824 21:23:26 GMI 85-92GHz 42.8 31.54 -59.98 31.46 -60.02 0.58 1.63 0.30 3.1
20250824 21:23:26 GMI 37GHz 42.8 31.94 -59.57 31.86 -59.61 0.44 1.25 2.20 ***
20250824 21:10:18 * SSMIS-17 85-92GHz 42.6 31.52 -59.82 31.46 -59.85 0.32 0.91 0.20 27.6
20250824 19:47:59 * SSMIS-18 85-92GHz 41.5 31.44 -60.26 31.56 -60.19 0.28 0.79 1.60 7.1
20250824 17:12:10 AMSR2 85-92GHz 39.3 31.13 -59.86 31.20 -59.84 0.38 1.07 1.60 5.1
20250824 17:12:10 AMSR2 37GHz 39.3 31.28 -59.86 31.35 -59.84 0.38 1.07 0.30 ***
20250824 14:03:00 Metop-A ASCAT 36.7 *** *** *** *** *** *** *** ***
20250824 13:15:00 * Metop-C ASCAT 36.0 30.51 -60.32 30.25 -60.39 0.15 0.41 *** ***
20250824 09:50:42 SSMIS-17 85-92GHz 35.0 30.02 -60.36 29.76 -60.54 0.29 0.81 0.40 23.0
20250824 07:53:26 GMI 85-92GHz 35.0 29.63 -60.87 29.83 -60.73 0.36 1.00 0.50 16.1
20250824 07:53:26 GMI 37GHz 35.0 29.68 -60.35 29.88 -60.21 0.55 1.56 0.60 ***
20250824 06:12:28 AMSR2 85-92GHz 35.0 29.09 -60.81 29.01 -60.85 0.24 0.68 1.70 16.5
20250824 06:12:28 * AMSR2 37GHz 35.0 29.14 -60.70 29.06 -60.73 0.20 0.57 0.50 ***
20250824 00:48:00 * Metop-C ASCAT 35.0 28.07 -60.93 27.88 -60.99 0.22 0.62 *** ***
20250823 22:03:26 * GMI 85-92GHz 35.0 28.04 -60.83 27.70 -60.92 0.27 0.75 3.00 0.0
20250823 22:03:26 GMI 37GHz 35.0 27.64 -60.72 27.30 -60.81 0.44 1.23 0.80 ***
20250823 21:53:50 SSMIS-16 85-92GHz 35.0 27.15 -60.90 26.85 -60.98 0.37 1.05 3.00 0.0
20250823 21:23:12 SSMIS-17 85-92GHz 35.0 27.07 -61.05 26.89 -61.09 0.35 1.00 0.80 3.3
20250823 20:00:29 * SSMIS-18 85-92GHz 35.0 26.89 -61.82 27.10 -61.77 0.30 0.86 1.00 5.2

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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