-- 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
20260929 11:50:20   GOES18 IR 51 16.95 -104.47 16.96 -104.49 3.36 9.49 0.40 1
20260929 11:50:20 * GOES18 SWIR 51 16.50 -103.36 16.51 -103.38 1.03 2.91 0.70 ***
20260929 11:25:38   SSMIS-18 89-92GHz 51 *** *** *** *** 0.57 1.61 2.80 1
20260929 08:50:20   GOES18 IR 53 16.78 -103.04 16.79 -103.07 3.36 9.49 0.90 2
20260929 08:50:20 * GOES18 SWIR 53 16.68 -102.84 16.69 -102.86 0.85 2.39 0.60 ***
20260929 05:50:20   GOES18 IR 51 16.68 -103.07 16.68 -103.11 3.36 9.49 0.30 2
20260929 05:50:20   GOES18 SWIR 51 16.30 -102.09 16.31 -102.13 3.36 9.49 0.50 ***
20260929 04:06:30   GMI 37GHz 50 14.23 -103.53 14.19 -103.29 0.25 0.70 0.90 ***
20260929 04:06:30   GMI 89-92GHz 50 14.68 -103.27 14.64 -103.03 0.35 0.98 2.10 7
20260929 02:50:20   GOES18 IR 48 16.54 -102.46 16.54 -102.50 3.36 9.49 0.30 5
20260929 02:50:20   GOES18 SWIR 48 13.04 -103.86 13.04 -103.89 0.52 1.47 0.20 ***
20260929 01:04:58   SSMIS-17 89-92GHz 47 14.48 -102.22 14.45 -101.98 0.37 1.06 1.60 9
20260928 23:50:20   GOES18 IR 46 13.80 -102.73 13.81 -102.75 3.36 9.49 0.70 2
20260928 23:50:20   GOES18 SWIR 46 13.60 -102.47 13.61 -102.50 1.17 3.31 0.40 ***
20260928 22:50:09 * SSMIS-18 89-92GHz 46 13.79 -103.05 13.87 -103.25 0.28 0.79 2.00 19
20260928 20:50:20   GOES18 IR 48 13.50 -102.00 13.51 -102.02 3.36 9.49 0.10 0
20260928 20:50:20   GOES18 SWIR 48 13.20 -102.10 13.21 -102.13 0.71 2.00 0.20 ***
20260928 17:50:20   GOES18 IR 46 12.93 -102.68 12.94 -102.70 3.36 9.49 0.40 6
20260928 17:50:20   GOES18 SWIR 46 12.91 -101.68 12.92 -101.69 2.91 8.23 0.10 ***
20260928 14:50:22   GOES18 IR 46 14.86 -102.86 14.87 -102.87 2.71 7.66 1.00 47
20260928 14:50:22   GOES18 SWIR 46 12.71 -100.82 12.72 -100.84 0.61 1.72 0.20 ***
20260928 12:14:35 * SSMIS-17 89-92GHz 45 12.37 -101.30 12.35 -101.27 0.31 0.88 0.70 15
20260928 11:50:22   GOES18 IR 43 12.96 -100.75 12.97 -100.77 3.36 9.49 0.10 1
20260928 11:50:22   GOES18 SWIR 43 15.08 -99.51 15.09 -99.53 0.42 1.19 0.20 ***
20260928 11:40:29   SSMIS-18 89-92GHz 42 13.65 -101.29 13.67 -101.33 0.43 1.22 2.50 2
20260928 08:50:22   GOES18 IR 41 14.04 -100.88 14.05 -100.90 3.36 9.49 1.00 10
20260928 08:50:22   GOES18 SWIR 41 14.11 -99.98 14.13 -100.00 0.86 2.44 0.20 ***
20260928 05:50:22   GOES18 IR 38 13.01 -101.15 13.02 -101.16 2.87 8.12 0.20 45
20260928 05:50:22   GOES18 SWIR 38 12.18 -99.84 12.20 -99.85 0.88 2.49 0.20 ***
20260928 02:50:20   GOES19 IR 41 12.30 -99.79 12.31 -99.80 3.36 9.49 0.60 1
20260928 02:50:20   GOES19 SWIR 41 12.28 -99.58 12.29 -99.60 0.74 2.08 0.10 ***
20260927 23:50:20   GOES19 IR 38 13.98 -100.76 13.98 -100.77 0.98 2.78 0.30 60
20260927 23:50:20   GOES19 SWIR 38 13.38 -100.09 13.38 -100.11 3.36 9.49 0.10 ***
20260927 23:04:58 * SSMIS-18 89-92GHz 37 12.75 -100.23 12.76 -100.33 0.28 0.79 2.20 20
20260927 20:50:20   GOES19 IR 33 12.86 -99.53 12.86 -99.55 0.86 2.43 0.80 61
20260927 20:50:20   GOES19 SWIR 33 12.91 -99.28 12.91 -99.29 0.76 2.15 0.60 ***
20260927 17:50:20   GOES19 IR 31 12.66 -99.45 12.67 -99.46 1.65 4.67 0.40 50
20260927 17:50:20   GOES19 SWIR 31 12.96 -99.14 12.97 -99.15 0.91 2.58 0.30 ***
20260927 15:26:30   GMI 37GHz 30 12.76 -98.73 12.76 -98.69 0.16 0.44 1.50 ***
20260927 15:26:30   GMI 89-92GHz 30 12.76 -98.73 12.76 -98.69 0.26 0.74 1.80 11
20260927 14:50:20   GOES19 IR 30 11.62 -99.78 11.63 -99.79 3.36 9.49 0.10 9
20260927 14:50:20   GOES19 SWIR 30 11.82 -99.83 11.83 -99.84 3.36 9.49 0.10 ***
20260927 11:50:20   GOES19 IR 30 11.94 -99.27 11.95 -99.26 3.36 9.49 0.40 47
20260927 11:50:20 * GOES19 SWIR 30 12.02 -99.17 12.03 -99.16 0.85 2.39 0.50 ***
20260927 08:50:20 * GOES19 IR 30 13.52 -100.55 13.53 -100.53 0.92 2.61 0.40 63
20260927 08:50:20   GOES19 SWIR 30 12.14 -99.04 12.16 -99.03 1.04 2.95 0.40 ***

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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