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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
20260821 14:50:21   GOES18 IR 33 12.86 -147.92 12.87 -147.94 3.36 9.49 0.80 1
20260821 14:50:21   GOES18 SWIR 33 13.06 -146.69 13.07 -146.71 1.50 4.25 0.20 ***
20260821 14:00:35 * SSMIS-18 89-92GHz 32 13.16 -145.60 13.22 -145.73 0.55 1.55 2.20 1
20260821 11:50:21   GOES18 IR 31 13.11 -145.72 13.12 -145.73 3.36 9.49 1.00 15
20260821 11:50:21   GOES18 SWIR 31 13.03 -145.75 13.04 -145.76 3.36 9.49 1.00 ***
20260821 08:50:20   GOES18 IR 33 12.98 -144.79 12.98 -144.80 3.36 9.49 0.70 12
20260821 08:50:20 * GOES18 SWIR 33 12.90 -144.94 12.91 -144.95 0.44 1.26 0.30 ***
20260821 05:50:20   GOES18 IR 31 12.86 -144.58 12.87 -144.60 3.36 9.49 0.10 1
20260821 05:50:20   GOES18 SWIR 31 12.94 -144.79 12.94 -144.80 0.73 2.06 0.20 ***
20260821 05:25:44 * GMI 37GHz 31 12.95 -144.69 12.96 -144.74 0.22 0.62 0.90 ***
20260821 05:25:44   GMI 89-92GHz 31 13.20 -144.38 13.21 -144.44 0.30 0.85 1.30 7
20260821 03:42:24   SSMIS-17 89-92GHz 30 12.98 -144.32 12.97 -144.25 0.33 0.93 0.50 6
20260821 02:50:20   GOES18 IR 33 11.86 -142.84 11.87 -142.85 3.36 9.49 1.00 5
20260821 02:50:20   GOES18 SWIR 33 11.71 -142.91 11.72 -142.93 0.57 1.62 0.70 ***
20260821 01:25:08   SSMIS-18 89-92GHz 32 12.81 -143.88 12.78 -143.74 0.35 1.00 0.40 6
20260820 23:50:20   GOES18 IR 31 11.69 -144.88 11.70 -144.91 3.36 9.49 0.50 3
20260820 23:50:20   GOES18 SWIR 31 11.21 -142.77 11.23 -142.81 0.86 2.44 0.20 ***
20260820 20:50:21   GOES18 IR 33 10.85 -142.58 10.87 -142.61 0.41 1.16 1.00 44
20260820 20:50:21   GOES18 SWIR 33 10.75 -142.66 10.77 -142.69 0.39 1.11 1.00 ***
20260820 17:55:45 * GMI 37GHz 31 10.67 -142.15 10.68 -142.16 0.20 0.56 0.90 ***
20260820 17:55:45   GMI 89-92GHz 31 12.07 -143.32 12.08 -143.33 0.54 1.53 2.50 2
20260820 17:50:20   GOES18 IR 31 11.51 -142.34 11.53 -142.36 3.36 9.49 0.40 10
20260820 17:50:20   GOES18 SWIR 31 10.71 -142.05 10.73 -142.08 0.66 1.87 0.30 ***
20260820 14:50:20   GOES18 IR 30 10.69 -141.44 10.71 -141.46 3.36 9.49 0.10 10
20260820 14:50:20   GOES18 SWIR 30 10.59 -142.13 10.61 -142.15 0.69 1.94 0.60 ***
20260820 14:15:45   SSMIS-18 89-92GHz 30 11.60 -142.67 11.68 -142.77 0.50 1.41 4.70 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

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