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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
20260911 20:50:22   GOES18 IR 58 17.10 -126.14 17.11 -126.17 0.86 2.44 0.10 4
20260911 20:50:22   GOES18 SWIR 58 16.90 -125.90 16.91 -125.93 2.44 6.90 0.20 ***
20260911 17:50:22   GOES18 IR 56 17.01 -125.17 17.02 -125.20 0.84 2.37 0.20 3
20260911 17:50:22   GOES18 SWIR 56 17.06 -125.17 17.07 -125.20 0.41 1.16 0.10 ***
20260911 14:50:22   GOES18 IR 53 17.15 -124.25 17.15 -124.28 1.83 5.17 0.10 3
20260911 14:50:22   GOES18 SWIR 53 17.05 -124.10 17.05 -124.13 0.54 1.53 0.10 ***
20260911 14:37:33 * SSMIS-17 89-92GHz 55 17.10 -123.74 17.11 -123.81 0.25 0.70 0.70 62
20260911 12:21:34   SSMIS-18 89-92GHz 51 16.97 -123.37 16.96 -123.31 0.31 0.89 0.60 36
20260911 11:50:22   GOES18 IR 51 16.86 -123.43 16.86 -123.47 3.36 9.49 0.10 0
20260911 11:50:22   GOES18 SWIR 51 17.36 -123.25 17.36 -123.28 2.83 8.01 0.10 ***
20260911 10:25:44   GMI 37GHz 50 *** *** *** *** 0.18 0.52 1.10 ***
20260911 10:25:44 * GMI 89-92GHz 50 16.90 -123.06 16.90 -122.72 0.46 1.31 0.10 8
20260911 08:50:21   GOES18 IR 48 16.61 -122.94 16.61 -122.98 3.16 8.93 0.20 3
20260911 08:50:21   GOES18 SWIR 48 16.43 -123.10 16.43 -123.14 3.36 9.49 0.60 ***
20260911 05:50:21   GOES18 IR 46 15.07 -120.93 15.07 -120.97 3.36 9.49 0.60 13
20260911 05:50:21   GOES18 SWIR 46 17.02 -120.49 17.02 -120.53 0.57 1.60 0.20 ***
20260911 02:50:21   GOES18 IR 43 16.80 -121.23 16.81 -121.27 3.36 9.49 0.10 0
20260911 02:50:21   GOES18 SWIR 43 17.05 -120.60 17.06 -120.64 1.19 3.38 0.10 ***
20260911 02:03:25 * SSMIS-17 89-92GHz 42 16.25 -122.09 16.28 -122.31 0.51 1.43 1.40 2
20260910 23:50:21   GOES18 IR 41 17.93 -119.84 17.92 -119.88 3.36 9.49 1.00 6
20260910 23:50:21   GOES18 SWIR 41 16.85 -120.54 16.85 -120.58 2.71 7.65 0.30 ***
20260910 23:47:25 * SSMIS-18 89-92GHz 41 17.20 -121.73 17.20 -121.78 0.64 1.80 2.40 0
20260910 20:50:22   GOES18 IR 38 17.50 -122.34 17.50 -122.38 3.36 9.49 1.00 1
20260910 20:50:22   GOES18 SWIR 38 17.00 -122.47 17.00 -122.51 2.94 8.31 0.70 ***
20260910 17:50:21   GOES18 IR 36 15.15 -121.45 15.15 -121.49 3.36 9.49 0.50 6
20260910 17:50:21   GOES18 SWIR 36 16.50 -119.03 16.50 -119.06 3.36 9.49 0.20 ***
20260910 14:50:21   GOES18 IR 38 16.03 -121.20 16.03 -121.23 3.36 9.49 0.20 0
20260910 14:50:21   GOES18 SWIR 38 15.58 -121.02 15.58 -121.05 0.90 2.56 0.10 ***
20260910 12:35:35 * SSMIS-18 89-92GHz 36 16.96 -119.20 16.96 -119.08 0.40 1.13 1.70 4
20260910 11:50:21   GOES18 IR 36 17.19 -116.58 17.19 -116.62 3.36 9.49 0.30 15
20260910 11:50:21   GOES18 SWIR 36 16.19 -117.99 16.19 -118.03 3.36 9.49 0.40 ***
20260910 08:50:21   GOES18 IR 33 17.17 -116.14 17.17 -116.17 2.59 7.32 0.10 5
20260910 08:50:21   GOES18 SWIR 33 16.40 -116.82 16.40 -116.85 3.36 9.49 0.30 ***
20260910 05:50:21   GOES18 IR 31 18.28 -118.07 18.28 -118.10 3.36 9.49 0.80 0
20260910 05:50:21   GOES18 SWIR 31 16.68 -115.10 16.68 -115.13 0.70 1.99 0.40 ***
20260910 02:50:21   GOES18 IR 33 17.84 -116.40 17.84 -116.43 3.17 8.95 1.00 13
20260910 02:50:21   GOES18 SWIR 33 16.66 -115.00 16.67 -115.03 2.27 6.43 0.10 ***
20260910 00:01:11 * SSMIS-18 89-92GHz 31 14.54 -114.89 14.54 -114.89 0.37 1.06 2.10 6
20260909 23:50:21   GOES18 IR 31 16.38 -117.76 16.40 -117.80 3.36 9.49 0.40 1
20260909 23:50:21   GOES18 SWIR 31 16.38 -117.76 16.40 -117.80 2.79 7.87 0.40 ***
20260909 21:45:44 * GMI 37GHz 30 15.47 -115.93 15.38 -115.74 0.31 0.88 1.50 ***
20260909 21:45:44   GMI 89-92GHz 30 *** *** *** *** 0.52 1.48 0.20 1
20260909 20:50:21   GOES18 IR 30 17.30 -116.39 17.31 -116.43 0.72 2.04 0.70 35
20260909 20:50:21   GOES18 SWIR 30 17.00 -116.31 17.01 -116.35 0.61 1.73 0.80 ***

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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