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 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 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
		20250827 19:07:31 SSMIS-18 85-92GHz 45.0 38.85 -47.90 38.67 -48.38 0.36 1.01 2.10 7.7
		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 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 1.43 1.80 1.4 20250827 05:02:18 AMSR2 85-92GHz 40.0 38.60 -51.22 38.60 -51.08 0.49 1.38 1.90 2.8
		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 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
		20250825 21:28:30 * SSMIS-16 85-92GHz 47.1 35.42 -56.91 35.32 -57.01 0.24 0.69 2.70 21.1 20250825 20:56:59 SSMIS-17 85-92GHz 47.5 35.40 -57.11 35.37 -57.13 0.31 0.89 2.90 6.8 20250825 19:34:44 * SSMIS-18 85-92GHz 48.7 34.82 -57.28 34.97 -57.13 0.33 0.92 2.20 5.1
		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 05:16:16 AMSR2 85-92GHz 45.0 *** *** *** *** *** *** 1.80 ***
		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 21:10:18 * 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 7.2
		20250824 17:12:10 AMSR2 85-92GHz 39.3 31.13 -59.86 31.20 -59.84 0.38 1.07 1.60 5.0
		20250824 09:50:42 SSMIS-17 85-92GHz 35.0 30.02 -60.36 29.76 -60.54 0.29 0.81 0.40 22.6 20250824 07:53:26 GMI 85-92GHz 35.0 29.63 -60.87 29.83 -60.73 0.36 1.01 0.50 16.1
		20250824 06:12:28 AMSR2 85-92GHz 35.0 29.09 -60.81 29.01 -60.85 0.24 0.68 1.60 15.4
		20250823 22:03:26 * GMI 85-92GHz 35.0 28.04 -60.83 27.70 -60.92 0.26 0.74 0.20 8.0 20250823 21:53:50 SSMIS-16 85-92GHz 35.0 27.15 -60.90 26.85 -60.98 0.37 1.04 0.40 2.2 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: ARCHER Track page