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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
20250812 17:27:00 * Metop-C ASCAT 20.0 23.20 -123.80 23.20 -123.91 0.39 1.10 *** ***
20250812 04:48:27 * GMI 85-92GHz 20.5 23.40 -122.64 23.40 -122.87 0.56 1.58 2.70 0.3
20250812 04:48:27 GMI 37GHz 20.5 *** *** *** *** *** *** 1.40 ***
20250811 20:58:50 AMSR2 85-92GHz 23.8 23.45 -120.80 23.45 -120.81 0.46 1.30 0.10 2.3
20250811 20:58:50 * AMSR2 37GHz 23.8 23.25 -120.20 23.25 -120.21 0.23 0.64 2.10 ***
20250811 16:57:00 * Metop-A ASCAT 25.6 23.14 -119.89 23.15 -120.08 0.15 0.43 *** ***
20250811 15:23:26 GMI 85-92GHz 26.4 23.16 -119.82 23.14 -119.75 0.40 1.13 2.80 1.0
20250811 15:23:26 GMI 37GHz 26.4 23.11 -119.44 23.09 -119.37 0.44 1.24 0.90 ***
20250811 14:40:07 * SSMIS-17 85-92GHz 26.9 23.38 -120.29 23.39 -120.35 0.29 0.81 0.60 2.7
20250811 10:03:02 AMSR2 85-92GHz 29.4 22.89 -118.83 22.85 -118.65 0.45 1.27 2.70 0.8
20250811 10:03:02 * AMSR2 37GHz 29.4 22.69 -118.50 22.65 -118.32 0.41 1.15 1.40 ***
20250811 05:21:00 * Metop-C ASCAT 30.0 22.37 -117.83 22.40 -117.93 0.16 0.45 *** ***
20250811 04:30:00 Metop-A ASCAT 30.0 *** *** *** *** *** *** *** ***
20250811 02:33:48 SSMIS-16 85-92GHz 30.0 22.43 -117.89 22.46 -117.94 0.49 1.40 1.60 0.5
20250811 02:09:20 * SSMIS-17 85-92GHz 30.0 22.67 -117.97 22.74 -118.08 0.29 0.81 2.80 3.3
20250810 23:03:41 * SSMIS-18 85-92GHz 30.8 22.26 -117.33 22.31 -117.44 0.39 1.10 0.50 2.2
20250810 18:09:00 Metop-C ASCAT 35.0 *** *** *** *** *** *** *** ***
20250810 17:18:00 * Metop-A ASCAT 35.0 21.87 -116.42 21.90 -116.52 0.16 0.45 *** ***
20250810 09:20:24 AMSR2 85-92GHz 35.0 21.76 -115.16 21.73 -115.09 0.33 0.94 0.80 12.7
20250810 09:20:24 * AMSR2 37GHz 35.0 21.56 -115.21 21.53 -115.14 0.18 0.50 0.30 ***
20250810 04:51:00 Metop-A ASCAT 36.9 21.25 -114.34 21.30 -114.52 0.16 0.45 *** ***
20250810 04:38:27 GMI 85-92GHz 37.3 21.34 -114.42 21.40 -114.62 0.21 0.60 0.80 13.9
20250810 04:38:27 * GMI 37GHz 37.3 21.29 -114.42 21.35 -114.62 0.14 0.40 0.50 ***
20250809 23:17:08 SSMIS-18 85-92GHz 45.0 20.67 -114.00 20.70 -114.07 0.26 0.73 0.40 54.0
20250809 21:10:20 AMSR2 85-92GHz 45.0 20.93 -113.46 20.93 -113.45 0.32 0.91 0.40 21.3
20250809 21:10:20 * AMSR2 37GHz 45.0 20.98 -113.41 20.98 -113.39 0.18 0.51 0.40 ***
20250809 16:51:00 * Metop-C ASCAT 46.0 20.90 -112.95 20.90 -113.09 0.16 0.44 *** ***
20250809 15:13:26 GMI 85-92GHz 47.3 *** *** *** *** *** *** 3.00 ***
20250809 15:13:26 GMI 37GHz 47.3 *** *** *** *** *** *** 3.00 ***
20250809 13:27:57 SSMIS-17 85-92GHz 48.8 20.80 -112.90 20.80 -112.77 0.35 0.99 0.90 11.4
20250809 12:02:54 * SSMIS-18 85-92GHz 50.0 21.00 -112.94 21.00 -112.94 0.34 0.96 1.20 8.8
20250809 05:23:26 GMI 85-92GHz 50.5 20.74 -112.22 20.75 -112.25 0.36 1.02 0.20 11.0
20250809 05:23:26 * GMI 37GHz 50.5 20.64 -111.69 20.65 -111.72 0.32 0.89 0.30 ***
20250809 00:55:58 SSMIS-17 85-92GHz 55.0 *** *** *** *** *** *** 0.20 ***
20250808 23:31:01 * SSMIS-18 85-92GHz 55.0 20.39 -111.47 20.40 -111.52 0.26 0.73 0.20 9.4
20250808 20:27:13 * AMSR2 85-92GHz 55.0 20.42 -111.09 20.43 -111.19 0.17 0.49 0.30 79.2
20250808 20:27:13 AMSR2 37GHz 55.0 *** *** *** *** *** *** 0.40 ***
20250808 15:58:26 * GMI 85-92GHz 53.3 20.23 -110.59 20.30 -110.40 0.19 0.53 0.50 72.9
20250808 15:58:26 GMI 37GHz 53.3 20.33 -110.49 20.40 -110.29 0.30 0.86 0.20 ***
20250807 16:42:00 * Metop-A ASCAT 47.8 17.99 -104.58 18.20 -104.95 0.46 1.29 *** ***
20250807 10:50:46 * SSMIS-18 85-92GHz 39.0 16.74 -103.03 17.06 -103.28 0.46 1.31 0.20 3.2
20250807 08:50:46 * AMSR2 85-92GHz 37.4 16.17 -102.61 16.23 -102.64 0.42 1.19 0.10 10.6
20250807 08:50:46 AMSR2 37GHz 37.4 16.52 -102.30 16.58 -102.33 0.51 1.44 0.20 ***
20250806 22:15:50 * SSMIS-18 85-92GHz 35.7 14.32 -98.97 14.15 -98.59 0.36 1.02 0.10 55.6

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: Summary table, ARCHER Track table, ARCHER Track Image Archive, Intensity Estimation, ARCHER-ERC page, F-Decks

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