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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
20250829 05:48:00 * Metop-C ASCAT 25.1 25.74 -121.25 25.75 -121.26 0.15 0.42 *** ***
20250829 05:00:00 Metop-A ASCAT 25.4 25.36 -120.23 25.40 -120.25 0.28 0.80 *** ***
20250828 21:42:50 AMSR2 85-92GHz 28.5 26.25 -120.62 26.21 -120.61 0.42 1.18 0.60 1.9
20250828 21:42:50 AMSR2 37GHz 28.5 25.70 -121.29 25.66 -121.28 0.36 1.01 2.70 ***
20250828 17:48:00 Metop-A ASCAT 30.0 *** *** *** *** *** *** *** ***
20250828 17:45:00 * Metop-A ASCAT 30.0 25.53 -120.94 25.55 -120.94 0.15 0.43 *** ***
20250828 13:59:57 SSMIS-17 85-92GHz 30.0 26.39 -121.09 26.47 -121.11 0.57 1.60 0.40 0.6
20250828 12:38:16 SSMIS-18 85-92GHz 30.0 26.02 -120.61 25.96 -120.60 0.46 1.31 1.10 0.8
20250828 05:21:00 * Metop-A ASCAT 35.5 24.78 -120.80 24.85 -120.81 0.16 0.45 *** ***
20250828 01:30:38 SSMIS-17 85-92GHz 38.7 24.31 -120.85 24.45 -120.87 0.52 1.47 3.00 0.5
20250828 00:08:56 SSMIS-18 85-92GHz 40.0 24.56 -121.10 24.55 -121.10 0.57 1.61 2.40 0.6
20250827 23:58:27 GMI 85-92GHz 40.0 *** *** *** *** *** *** 3.00 ***
20250827 23:58:27 GMI 37GHz 40.0 *** *** *** *** *** *** 3.00 ***
20250827 20:59:09 AMSR2 85-92GHz 40.0 23.85 -120.51 23.85 -120.51 0.38 1.09 1.60 4.2
20250827 20:59:09 * AMSR2 37GHz 40.0 23.50 -120.40 23.50 -120.40 0.18 0.50 1.10 ***
20250827 17:18:00 * Metop-C ASCAT 40.6 23.20 -120.04 23.31 -120.12 0.18 0.50 *** ***
20250827 17:15:00 * Metop-C ASCAT 40.6 23.19 -120.04 23.31 -120.13 0.18 0.50 *** ***
20250827 14:47:28 SSMIS-16 85-92GHz 42.7 22.99 -120.20 23.02 -120.22 0.43 1.20 1.30 2.6
20250827 14:14:43 SSMIS-17 85-92GHz 43.1 22.64 -120.11 22.77 -120.22 0.49 1.38 1.30 1.5
20250827 10:28:27 GMI 85-92GHz 44.2 *** *** *** *** *** *** 2.80 ***
20250827 10:28:27 * GMI 37GHz 44.2 22.09 -118.96 21.81 -118.79 0.24 0.68 1.00 ***
20250827 10:03:17 AMSR2 85-92GHz 44.4 22.27 -119.18 22.07 -119.06 0.34 0.95 0.30 21.1
20250827 10:03:17 AMSR2 37GHz 44.4 22.32 -119.02 22.12 -118.90 0.32 0.90 1.00 ***
20250827 04:00:00 Metop-A ASCAT 48.3 *** *** *** *** *** *** *** ***
20250827 01:43:21 * SSMIS-17 85-92GHz 52.1 20.68 -117.89 20.89 -118.06 0.25 0.70 0.30 51.3
20250827 00:38:26 GMI 85-92GHz 53.9 20.15 -117.84 20.05 -117.75 0.57 1.60 0.40 2.2
20250827 00:38:26 GMI 37GHz 53.9 20.75 -117.36 20.65 -117.27 0.34 0.96 0.40 ***
20250826 17:39:00 Metop-C ASCAT 55.3 *** *** *** *** *** *** *** ***
20250826 16:51:00 Metop-A ASCAT 56.0 *** *** *** *** *** *** *** ***
20250826 11:27:23 * SSMIS-18 85-92GHz 59.5 18.63 -116.22 18.70 -116.25 0.18 0.50 0.80 56.6
20250826 11:13:26 GMI 85-92GHz 59.4 18.40 -116.10 18.50 -116.15 0.20 0.56 0.50 55.4
20250826 11:13:26 GMI 37GHz 59.4 *** *** *** *** *** *** 0.30 ***
20250826 09:21:19 AMSR2 85-92GHz 57.8 18.12 -115.96 18.08 -115.95 0.26 0.75 0.50 44.9
20250826 09:21:19 AMSR2 37GHz 57.8 18.07 -115.86 18.03 -115.84 0.22 0.61 0.20 ***
20250826 05:09:00 Metop-C ASCAT 55.0 *** *** *** *** *** *** *** ***
20250826 04:18:00 Metop-A ASCAT 55.0 *** *** *** *** *** *** *** ***
20250826 02:28:39 * SSMIS-16 85-92GHz 55.0 17.67 -115.48 17.71 -115.56 0.29 0.82 2.50 20.1
20250826 01:56:58 * SSMIS-17 85-92GHz 55.0 17.62 -115.30 17.71 -115.46 0.29 0.82 2.40 17.5
20250825 21:09:26 * AMSR2 85-92GHz 52.6 17.20 -114.72 17.19 -114.70 0.33 0.94 0.40 18.3
20250825 21:09:26 AMSR2 37GHz 52.6 17.35 -114.67 17.34 -114.64 0.37 1.05 0.20 ***
20250825 17:09:00 * Metop-A ASCAT 47.9 17.33 -113.93 17.38 -114.11 0.16 0.45 *** ***
20250825 11:41:24 SSMIS-18 85-92GHz 35.0 17.58 -112.80 17.60 -112.87 0.52 1.46 2.10 2.7
20250825 04:39:00 * Metop-A ASCAT 33.9 16.41 -111.57 16.48 -111.85 0.18 0.52 *** ***
20250825 00:23:26 GMI 85-92GHz 30.0 16.14 -110.16 16.12 -110.09 0.48 1.35 2.90 0.9
20250825 00:23:26 * GMI 37GHz 30.0 16.39 -110.11 16.37 -110.04 0.33 0.94 3.00 ***
20250824 23:06:54 SSMIS-18 85-92GHz 30.0 16.26 -110.47 16.31 -110.65 0.38 1.07 2.30 4.1

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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