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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
20250831 11:31:01 SSMIS-16 85-92GHz 15.2 19.08 98.07 19.08 98.08 0.43 1.21 1.80 2.7
20250831 10:56:52 SSMIS-17 85-92GHz 15.4 18.65 98.98 18.68 98.87 0.51 1.44 0.20 0.3
20250831 09:35:50 SSMIS-18 85-92GHz 16.0 18.55 99.20 18.51 99.43 0.38 1.07 0.50 1.7
20250831 08:43:26 GMI 85-92GHz 16.4 18.32 99.49 18.31 99.54 0.47 1.33 1.00 0.9
20250831 08:43:26 * GMI 37GHz 16.4 17.22 99.91 17.21 99.96 0.28 0.79 0.70 ***
20250831 02:24:00 Metop-C ASCAT 19.0 *** *** *** *** *** *** *** ***
20250830 23:44:16 * SSMIS-17 85-92GHz 20.1 18.15 101.11 18.15 101.17 0.46 1.29 1.50 1.4
20250830 19:23:26 GMI 85-92GHz 22.6 18.20 102.51 18.18 102.20 0.48 1.34 0.40 2.7
20250830 19:23:26 GMI 37GHz 22.6 *** *** *** *** *** *** 0.40 ***
20250830 18:50:06 * AMSR2 85-92GHz 22.9 18.06 102.10 18.08 102.48 0.46 1.31 1.60 3.0
20250830 18:50:06 AMSR2 37GHz 22.9 *** *** *** *** *** *** 0.20 ***
20250830 13:54:00 Metop-C ASCAT 25.0 *** *** *** *** *** *** *** ***
20250830 11:44:35 * SSMIS-16 85-92GHz 25.6 17.25 104.95 17.25 105.03 0.35 0.98 3.00 0.0
20250830 11:10:46 SSMIS-17 85-92GHz 27.1 17.25 104.46 17.25 104.35 0.39 1.09 3.00 0.0
20250830 06:38:07 AMSR2 85-92GHz 38.4 18.22 105.81 18.18 106.17 0.62 1.75 1.50 0.5
20250830 06:38:07 * AMSR2 37GHz 38.4 17.77 107.08 17.73 107.44 0.36 1.03 1.10 ***
20250830 02:45:00 * Metop-C ASCAT 40.0 17.71 107.61 17.69 107.68 0.21 0.59 *** ***
20250829 20:55:17 * SSMIS-18 85-92GHz 34.9 17.54 108.60 17.53 108.67 0.45 1.28 1.00 5.8
20250829 18:06:58 * AMSR2 85-92GHz 30.0 17.45 109.11 17.44 109.26 0.47 1.32 0.30 2.6
20250829 18:06:58 AMSR2 37GHz 30.0 *** *** *** *** *** *** 0.40 ***
20250829 14:12:00 * Metop-C ASCAT 30.0 16.99 110.68 17.00 110.57 0.16 0.44 *** ***
20250829 08:33:26 GMI 85-92GHz 30.0 *** *** *** *** *** *** 3.00 ***
20250829 08:33:26 GMI 37GHz 30.0 *** *** *** *** *** *** 3.00 ***
20250829 08:21:48 SSMIS-18 85-92GHz 30.0 16.76 111.56 16.78 111.54 0.44 1.25 0.90 3.1
20250829 05:54:30 AMSR2 85-92GHz 30.0 16.29 112.32 16.27 112.39 0.41 1.14 1.00 5.4
20250829 05:54:30 * AMSR2 37GHz 30.0 16.59 112.22 16.57 112.29 0.28 0.79 0.70 ***
20250829 02:15:00 Metop-A ASCAT 30.0 *** *** *** *** *** *** *** ***
20250828 22:32:01 SSMIS-17 85-92GHz 30.9 16.30 113.43 16.38 113.28 0.50 1.40 0.40 1.0
20250828 19:13:26 * GMI 85-92GHz 30.5 15.72 113.87 15.83 113.68 0.24 0.67 0.20 7.2
20250828 19:13:26 GMI 37GHz 30.5 15.77 114.02 15.88 113.83 0.35 0.98 0.90 ***
20250828 13:42:00 * Metop-A ASCAT 30.0 15.46 114.51 15.50 114.39 0.14 0.40 *** ***
20250828 10:29:59 SSMIS-16 85-92GHz 30.0 15.45 115.99 15.51 115.84 0.46 1.29 2.90 2.3
20250828 09:57:00 * SSMIS-17 85-92GHz 30.5 15.51 115.07 15.41 115.29 0.39 1.09 0.50 2.4
20250828 08:35:33 SSMIS-18 85-92GHz 30.0 15.47 115.50 15.47 115.51 0.64 1.80 2.90 0.0
20250828 05:11:07 AMSR2 85-92GHz 30.0 14.40 116.42 14.42 116.38 0.44 1.25 3.00 0.0
20250828 05:11:07 * AMSR2 37GHz 30.0 13.60 116.16 13.62 116.12 0.31 0.87 3.00 ***

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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