-- Link to ARCHER Track page --

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
20260727 05:50:21 * GOES18 IR 136 14.98 -111.81 15.00 -111.84 0.13 0.36 0.30 100
20260727 05:50:21   GOES18 SWIR 136 14.96 -111.81 14.98 -111.84 0.22 0.62 0.30 ***
20260727 02:53:25 * SSMIS-16 89-92GHz 134 14.59 -111.39 14.60 -111.41 0.09 0.26 0.30 100
20260727 02:50:21   GOES18 IR 126 14.61 -111.41 14.62 -111.43 0.10 0.29 0.30 100
20260727 02:50:21   GOES18 SWIR 126 14.58 -111.41 14.60 -111.43 0.23 0.65 0.30 ***
20260727 01:15:32   SSMIS-17 89-92GHz 124 14.43 -110.95 14.30 -110.79 0.10 0.28 0.30 100
20260726 23:50:21   GOES18 IR 123 14.28 -110.93 14.30 -110.96 0.11 0.30 0.30 100
20260726 23:50:21   GOES18 SWIR 123 14.28 -110.93 14.30 -110.96 0.26 0.75 0.30 ***
20260726 23:45:39   SSMIS-18 89-92GHz 123 *** *** *** *** 0.15 0.41 1.30 25
20260726 22:56:11   SSMIS-18 89-92GHz 122 *** *** *** *** 0.17 0.47 1.30 2
20260726 22:54:55   GMI 37GHz 122 14.19 -110.69 14.34 -110.85 0.11 0.30 0.20 ***
20260726 22:54:55   GMI 89-92GHz 122 14.24 -110.69 14.39 -110.85 0.09 0.26 0.30 100
20260726 20:50:21   GOES18 IR 114 13.91 -110.46 13.94 -110.49 0.12 0.33 0.30 100
20260726 20:50:21   GOES18 SWIR 114 13.89 -110.44 13.91 -110.46 0.16 0.44 0.30 ***
20260726 20:25:50   AMSR2 37GHz 119 13.89 -110.22 13.97 -110.31 0.11 0.30 0.20 ***
20260726 20:25:50   AMSR2 89-92GHz 119 13.94 -110.22 14.02 -110.31 0.09 0.25 0.40 100
20260726 17:50:21   GOES18 IR 109 13.53 -109.93 13.54 -109.96 0.12 0.33 0.40 100
20260726 17:50:21 * GOES18 SWIR 109 13.53 -109.98 13.54 -110.01 0.10 0.27 0.30 ***
20260726 14:50:21   GOES18 IR 92 13.24 -109.40 13.25 -109.43 0.11 0.31 0.10 100
20260726 14:50:21   GOES18 SWIR 92 13.24 -109.42 13.25 -109.45 0.38 1.08 0.10 ***
20260726 14:01:49   SSMIS-16 89-92GHz 103 *** *** *** *** 0.12 0.34 0.50 100
20260726 11:50:21   GOES18 IR 86 13.11 -109.02 13.13 -109.05 0.14 0.41 0.10 100
20260726 11:50:21   GOES18 SWIR 86 13.09 -108.97 13.10 -109.00 1.01 2.84 0.10 ***
20260726 11:46:12 * SSMIS-18 89-92GHz 86 13.18 -108.86 13.20 -108.90 0.10 0.28 0.50 100
20260726 08:50:21 * GOES18 IR 76 12.63 -108.30 12.65 -108.33 0.22 0.62 0.10 60
20260726 08:50:21   GOES18 SWIR 76 12.63 -108.12 12.65 -108.15 0.50 1.41 0.70 ***
20260726 05:50:21   GOES18 IR 73 12.43 -107.69 12.45 -107.73 0.47 1.33 0.20 62
20260726 05:50:21   GOES18 SWIR 73 12.43 -107.69 12.45 -107.73 0.72 2.02 0.20 ***
20260726 02:50:21 * GOES18 IR 66 12.19 -107.09 12.21 -107.13 0.25 0.71 0.10 61
20260726 02:50:21   GOES18 SWIR 66 12.69 -106.30 12.71 -106.34 0.84 2.36 0.10 ***
20260726 01:29:20   SSMIS-17 89-92GHz 67 *** *** *** *** 0.22 0.62 5.00 0
20260725 23:50:21   GOES18 IR 63 11.74 -106.30 11.75 -106.33 2.44 6.90 0.10 0
20260725 23:50:21   GOES18 SWIR 63 11.54 -106.12 11.55 -106.15 0.90 2.55 0.10 ***
20260725 20:50:21   GOES18 IR 59 11.41 -105.58 11.42 -105.60 3.36 9.49 0.30 0
20260725 20:50:21   GOES18 SWIR 59 11.46 -105.50 11.47 -105.53 0.75 2.11 0.10 ***
20260725 17:50:21   GOES18 IR 54 9.41 -105.26 9.43 -105.30 2.01 5.69 0.10 26
20260725 17:50:21   GOES18 SWIR 54 11.11 -104.90 11.13 -104.94 0.97 2.75 0.20 ***
20260725 14:50:21 * GOES18 IR 51 12.43 -103.79 12.44 -103.83 0.18 0.52 0.90 65
20260725 14:50:21   GOES18 SWIR 51 12.45 -103.85 12.47 -103.88 0.36 1.02 0.80 ***
20260725 14:15:58   SSMIS-16 89-92GHz 50 10.73 -104.20 10.81 -104.37 0.30 0.85 1.00 29
20260725 12:39:33   SSMIS-17 89-92GHz 49 11.05 -104.66 10.98 -104.50 0.30 0.84 2.00 39
20260725 11:50:21   GOES18 IR 48 10.36 -103.23 10.38 -103.25 3.36 9.49 0.10 1
20260725 11:50:21   GOES18 SWIR 48 11.86 -102.87 11.88 -102.89 0.53 1.48 0.70 ***
20260725 10:19:55   GMI 37GHz 46 10.69 -103.40 10.51 -103.25 0.19 0.53 0.40 ***
20260725 10:19:55   GMI 89-92GHz 46 10.19 -103.65 10.01 -103.50 0.22 0.62 1.10 61
20260725 08:52:52   AMSR2 37GHz 45 10.19 -104.90 10.20 -104.91 0.22 0.63 0.80 ***
20260725 08:52:52 * AMSR2 89-92GHz 45 10.09 -103.37 10.10 -103.39 0.18 0.52 0.80 78
20260725 08:50:21   GOES18 IR 51 9.88 -103.38 9.90 -103.39 3.36 9.49 0.10 1
20260725 08:50:21   GOES18 SWIR 51 9.93 -103.15 9.95 -103.17 3.36 9.49 0.10 ***
20260725 05:50:21   GOES18 IR 48 8.13 -104.21 8.15 -104.23 3.36 9.49 0.20 8
20260725 05:50:21   GOES18 SWIR 48 9.33 -103.01 9.35 -103.04 1.18 3.34 0.10 ***
20260725 02:50:21   GOES18 IR 43 9.31 -100.98 9.32 -101.01 0.83 2.35 0.30 49
20260725 02:50:21   GOES18 SWIR 43 9.18 -102.35 9.20 -102.37 0.53 1.49 0.10 ***
20260724 23:50:21   GOES18 IR 41 8.48 -102.09 8.48 -102.11 3.36 9.49 0.10 3
20260724 23:50:21   GOES18 SWIR 41 9.35 -102.42 9.36 -102.43 3.36 9.49 0.10 ***
20260724 23:23:22   SSMIS-18 89-92GHz 41 9.32 -102.29 9.34 -102.36 0.20 0.56 1.40 33
20260724 22:44:55   GMI 37GHz 40 9.22 -101.78 9.27 -101.93 0.23 0.64 0.30 ***
20260724 22:44:55   GMI 89-92GHz 40 9.17 -101.99 9.22 -102.13 0.18 0.50 0.30 26
20260724 20:50:21   GOES18 IR 36 8.37 -102.02 8.38 -102.04 3.36 9.49 0.20 3
20260724 20:50:21   GOES18 SWIR 36 7.57 -102.45 7.58 -102.47 0.57 1.61 0.20 ***
20260724 20:36:35 * AMSR2 37GHz 39 8.97 -101.68 8.98 -101.73 0.27 0.76 0.30 ***
20260724 20:36:35   AMSR2 89-92GHz 39 9.17 -101.79 9.18 -101.83 0.33 0.92 0.50 7
20260724 17:50:21   GOES18 IR 33 9.18 -101.47 9.19 -101.51 2.50 7.06 0.50 12
20260724 17:50:21 * GOES18 SWIR 33 8.06 -101.65 8.06 -101.69 0.63 1.79 0.20 ***
20260724 14:50:21   GOES18 IR 30 8.59 -100.32 8.60 -100.36 2.68 7.59 0.10 11
20260724 14:50:21   GOES18 SWIR 30 7.92 -100.78 7.92 -100.82 3.36 9.49 0.80 ***
20260724 14:30:26   SSMIS-16 89-92GHz 30 *** *** *** *** 0.46 1.30 5.00 0

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

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