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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
20250201 04:33:00 * Metop-A ASCAT 35.0 -38.29 53.25 -38.63 53.55 0.24 0.66 *** ***
20250201 02:41:35 SSMIS-17 85-92GHz 35.0 *** *** *** *** *** *** 3.00 ***
20250201 01:35:13 SSMIS-16 85-92GHz 35.0 *** *** *** *** *** *** 3.00 ***
20250131 21:53:36 AMSR2 85-92GHz 35.0 -35.12 52.70 -34.61 52.24 0.37 1.03 3.00 2.8
20250131 21:53:36 * AMSR2 37GHz 35.0 -35.47 53.25 -34.96 52.79 0.35 0.98 2.90 ***
20250131 18:51:00 Metop-A ASCAT 35.0 *** *** *** *** *** *** *** ***
20250131 18:09:00 * Metop-C ASCAT 35.0 -34.89 51.10 -34.72 50.90 0.25 0.69 *** ***
20250131 15:54:02 SSMIS-16 85-92GHz 35.9 *** *** *** *** *** *** 3.00 ***
20250131 15:19:27 SSMIS-17 85-92GHz 36.1 *** *** *** *** *** *** 2.80 ***
20250131 13:48:27 GMI 85-92GHz 36.7 -33.12 50.04 -33.26 50.25 0.33 0.92 3.00 2.3
20250131 13:48:27 * GMI 37GHz 36.7 -33.02 50.57 -33.16 50.79 0.21 0.60 1.80 ***
20250131 13:13:39 SSMIS-18 85-92GHz 37.0 -33.06 50.03 -33.31 50.43 0.42 1.19 3.00 2.6
20250131 10:52:00 * AMSR2 85-92GHz 38.0 -32.62 49.15 -32.73 49.33 0.24 0.68 2.60 4.0
20250131 10:52:00 AMSR2 37GHz 38.0 -32.52 49.27 -32.63 49.45 0.32 0.91 0.40 ***
20250131 02:54:05 SSMIS-17 85-92GHz 40.0 *** *** *** *** *** *** 1.70 ***
20250131 00:47:59 * SSMIS-18 85-92GHz 40.0 -30.50 47.75 -30.27 47.59 0.37 1.05 3.00 1.4
20250130 18:30:00 Metop-C ASCAT 40.0 *** *** *** *** *** *** *** ***
20250130 16:09:20 SSMIS-16 85-92GHz 40.0 *** *** *** *** *** *** 1.10 ***
20250130 15:35:10 * SSMIS-17 85-92GHz 40.0 -29.09 46.80 -28.82 46.55 0.28 0.78 3.00 3.5
20250130 13:29:07 * SSMIS-18 85-92GHz 40.0 -28.55 46.01 -28.82 46.26 0.25 0.69 3.00 5.9
20250130 06:06:00 Metop-C ASCAT 40.0 *** *** *** *** *** *** *** ***
20250130 03:40:50 SSMIS-16 85-92GHz 41.0 *** *** *** *** *** *** 3.00 ***
20250130 03:06:51 * SSMIS-17 85-92GHz 41.2 -26.60 44.08 -26.54 44.02 0.17 0.48 2.50 3.5
20250130 01:00:38 SSMIS-18 85-92GHz 42.1 -26.06 44.16 -26.19 44.30 0.25 0.71 0.90 32.3
20250129 22:03:46 AMSR2 85-92GHz 43.3 -25.54 43.59 -25.64 43.70 0.28 0.80 1.00 11.8
20250129 22:03:46 * AMSR2 37GHz 43.3 -25.69 43.42 -25.79 43.53 0.19 0.54 0.60 ***
20250129 17:15:00 Metop-A ASCAT 44.7 *** *** *** *** *** *** *** ***
20250129 15:50:20 * SSMIS-17 85-92GHz 44.1 -25.36 42.95 -25.26 42.87 0.20 0.57 2.20 2.4
20250129 13:43:56 SSMIS-18 85-92GHz 43.2 -25.42 43.30 -25.47 43.34 0.58 1.63 1.60 1.6
20250129 11:06:35 AMSR2 85-92GHz 42.1 -25.34 42.73 -25.37 42.75 0.31 0.88 0.70 15.3
20250129 11:06:35 * AMSR2 37GHz 42.1 -25.24 42.62 -25.27 42.63 0.26 0.72 2.70 ***

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

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