-- Link to ARCHER-ERC 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
20180120 09:59:45 AMSR2 85-92GHz 45.0 -30.31 49.54 -30.00 49.54 0.29 0.81 2.30 3.7
20180120 09:59:45 AMSR2 37GHz 45.0 *** *** *** *** *** *** 3.00 ***
20180120 06:06:00 * Metop-A ASCAT 45.0 -29.27 49.54 -29.13 49.55 0.15 0.42 *** ***
20180120 05:24:00 * Metop-B ASCAT 45.0 -29.06 49.67 -29.08 49.67 0.14 0.39 *** ***
20180120 05:11:40 GMI 85-92GHz 45.0 -29.36 50.42 -29.43 50.41 0.35 1.00 0.70 7.8
20180120 05:11:40 GMI 37GHz 45.0 -29.61 50.94 -29.68 50.93 0.22 0.63 1.20 ***
20180120 02:37:45 SSMIS-17 85-92GHz 45.0 -28.56 50.70 -28.52 50.72 0.42 1.19 1.30 1.4
20180120 01:53:39 SSMIS-18 85-92GHz 45.0 *** *** *** *** *** *** 3.00 ***
20180120 00:15:41 SSMIS-16 85-92GHz 45.0 -28.11 50.73 -27.93 50.83 0.53 1.48 3.00 1.2
20180119 21:53:44 * AMSR2 85-92GHz 46.8 -27.60 51.05 -27.31 51.25 0.28 0.80 2.90 23.4
20180119 21:53:44 AMSR2 37GHz 46.8 -27.25 50.71 -26.96 50.91 0.39 1.10 0.40 ***
20180119 18:51:00 * Metop-A ASCAT 50.0 -26.56 50.87 -26.24 51.13 0.15 0.44 *** ***
20180119 18:09:00 Metop-B ASCAT 50.0 *** *** *** *** *** *** *** ***
20180119 15:19:30 SSMIS-17 85-92GHz 50.0 -26.03 52.00 -25.79 52.24 0.18 0.50 2.30 15.8
20180119 14:35:17 * SSMIS-18 85-92GHz 50.0 -25.62 52.11 -25.60 52.14 0.15 0.42 0.20 84.3
20180119 12:58:05 * SSMIS-16 85-92GHz 50.0 -25.37 52.19 -25.02 52.45 0.22 0.62 0.20 31.4
20180119 11:03:51 SSMI-15 85-92GHz 50.8 *** *** *** *** *** *** 1.40 ***
20180119 02:49:13 * SSMIS-17 85-92GHz 55.0 -23.66 54.22 -23.61 54.26 0.27 0.76 2.60 12.8
20180119 02:04:37 SSMIS-18 85-92GHz 55.0 -23.69 54.24 -23.76 54.18 0.25 0.70 2.30 12.6
20180119 00:27:32 * SSMIS-16 85-92GHz 55.0 -23.35 54.57 -23.26 54.68 0.17 0.48 3.00 39.8
20180118 22:34:29 * SSMI-15 85-92GHz 56.2 -23.18 54.79 -23.25 54.70 0.15 0.44 2.60 42.0
20180118 21:09:34 * AMSR2 85-92GHz 57.4 -22.65 54.80 -22.62 54.85 0.13 0.38 0.70 57.7
20180118 21:09:34 AMSR2 37GHz 57.4 -22.55 54.74 -22.52 54.80 0.16 0.44 0.20 ***
20180118 18:41:39 GMI 85-92GHz 60.0 -22.90 54.94 -22.79 55.12 0.37 1.06 1.50 5.0
20180118 18:41:39 GMI 37GHz 60.0 -22.70 54.99 -22.59 55.18 0.18 0.50 0.20 ***
20180118 18:30:00 * Metop-B ASCAT 60.0 -22.02 55.03 -21.93 55.19 0.15 0.42 *** ***
20180118 17:33:00 Metop-A ASCAT 60.4 -22.04 55.12 -22.03 55.13 0.19 0.55 *** ***
20180118 15:34:03 * SSMIS-17 85-92GHz 62.0 -22.24 55.61 -22.06 55.99 0.15 0.42 0.20 83.4
20180118 11:20:36 * SSMI-15 85-92GHz 65.0 -21.77 56.87 -21.80 56.84 0.19 0.55 2.20 35.1
20180118 10:14:19 * AMSR2 85-92GHz 65.0 -21.44 56.68 -21.61 56.45 0.19 0.54 0.20 67.1
20180118 10:14:19 AMSR2 37GHz 65.0 -21.29 56.74 -21.46 56.50 0.25 0.70 0.20 ***
20180118 06:03:00 Metop-B ASCAT 65.0 *** *** *** *** *** *** *** ***
20180118 06:00:00 Metop-B ASCAT 65.0 *** *** *** *** *** *** *** ***
20180118 05:26:40 GMI 85-92GHz 65.0 -20.62 57.63 -20.63 57.63 0.33 0.94 0.20 7.5
20180118 05:26:40 GMI 37GHz 65.0 -20.62 57.63 -20.63 57.63 0.20 0.57 0.10 ***
20180118 05:06:00 * Metop-A ASCAT 65.0 -20.57 57.47 -20.63 57.41 0.13 0.36 *** ***
20180118 02:15:44 * SSMIS-18 85-92GHz 65.0 -20.20 58.02 -20.25 57.98 0.20 0.57 0.30 58.2
20180117 22:49:12 SSMI-15 85-92GHz 65.0 -19.99 58.45 -20.09 58.32 0.28 0.80 1.70 10.3
20180117 17:57:00 * Metop-A ASCAT 65.0 -18.89 59.45 -18.84 59.48 0.16 0.44 *** ***
20180117 17:54:00 Metop-A ASCAT 65.0 -18.89 59.45 -18.84 59.48 0.16 0.44 *** ***
20180117 17:12:00 * Metop-B ASCAT 65.0 -18.82 59.56 -18.85 59.54 0.13 0.37 *** ***
20180117 11:44:48 SSMIS-16 85-92GHz 65.2 -18.44 59.35 -18.42 59.36 0.16 0.46 0.70 89.2
20180117 09:32:07 AMSR2 85-92GHz 67.1 -18.38 59.45 -18.34 59.52 0.14 0.39 0.60 100.0
20180117 09:32:07 * AMSR2 37GHz 67.1 -18.58 59.98 -18.54 60.05 0.12 0.34 0.60 ***
20180117 05:24:00 * Metop-A ASCAT 71.0 -17.56 60.41 -17.55 60.40 0.19 0.54 *** ***
20180117 04:42:00 Metop-B ASCAT 72.2 -17.77 60.41 -17.75 60.35 0.19 0.54 *** ***
20180117 02:27:09 * SSMIS-18 85-92GHz 75.9 -18.18 60.10 -18.17 60.09 0.13 0.36 0.80 60.6
20180116 23:11:04 SSMIS-16 85-92GHz 80.0 -17.88 60.38 -17.88 60.36 0.16 0.46 0.20 36.2
20180116 21:20:16 AMSR2 85-92GHz 80.0 -18.19 60.07 -18.17 60.09 0.13 0.37 0.20 97.2
20180116 21:20:16 * AMSR2 37GHz 80.0 -18.09 60.65 -18.07 60.67 0.13 0.36 0.40 ***
20180116 18:51:40 GMI 85-92GHz 80.0 -18.11 60.73 -18.11 60.78 0.16 0.46 0.30 63.9
20180116 18:51:40 * GMI 37GHz 80.0 -18.06 60.78 -18.06 60.83 0.14 0.40 0.20 ***
20180116 14:20:23 * SSMIS-17 85-92GHz 83.1 -17.95 60.82 -17.95 60.82 0.12 0.34 0.90 50.9
20180116 11:57:46 * SSMIS-16 85-92GHz 85.1 -18.10 60.63 -18.09 60.66 0.14 0.40 0.10 14.4
20180116 05:45:00 Metop-A ASCAT 95.2 *** *** *** *** *** *** *** ***
20180116 05:36:39 GMI 85-92GHz 95.3 -17.75 61.78 -17.75 61.79 0.15 0.41 0.10 44.2
20180116 05:36:39 * GMI 37GHz 95.3 -17.90 61.62 -17.90 61.63 0.12 0.33 0.60 ***
20180116 01:46:39 * SSMIS-17 85-92GHz 98.5 -18.11 61.48 -18.07 61.45 0.14 0.39 0.70 45.0
20180115 23:23:55 * SSMIS-16 85-92GHz 100.0 -18.04 61.97 -18.04 61.96 0.14 0.40 0.30 59.4
20180115 17:54:00 * Metop-B ASCAT 99.8 -17.90 62.50 -17.89 62.53 0.14 0.40 *** ***
20180115 17:51:00 * Metop-B ASCAT 99.8 -17.90 62.50 -17.89 62.53 0.14 0.40 *** ***
20180115 16:57:00 Metop-A ASCAT 98.3 -17.95 62.62 -17.95 62.58 0.17 0.47 *** ***
20180115 14:33:32 SSMIS-17 85-92GHz 94.3 -18.11 62.85 -18.11 62.85 0.12 0.34 0.30 99.9
20180115 13:45:53 * SSMIS-18 85-92GHz 92.9 -18.04 62.90 -18.05 62.86 0.10 0.28 0.30 100.0
20180115 12:11:04 SSMIS-16 85-92GHz 90.0 -18.06 62.89 -18.04 62.92 0.12 0.34 0.30 99.9
20180115 10:28:16 * SSMI-15 85-92GHz 86.2 -17.94 63.02 -17.98 62.97 0.11 0.31 0.30 100.0
20180115 06:26:40 GMI 85-92GHz 76.1 *** *** *** *** *** *** 3.00 ***
20180115 06:26:40 GMI 37GHz 76.1 *** *** *** *** *** *** 3.00 ***
20180115 05:21:00 * Metop-B ASCAT 73.4 -17.60 63.09 -17.60 63.09 0.16 0.45 *** ***
20180115 04:27:00 Metop-A ASCAT 71.1 -17.40 63.20 -17.40 63.20 0.19 0.53 *** ***
20180114 23:36:51 * SSMIS-16 85-92GHz 59.7 -17.60 63.20 -17.60 63.20 0.14 0.39 0.20 74.6
20180114 21:55:33 SSMI-15 85-92GHz 58.3 *** *** *** *** *** *** 0.30 ***
20180114 14:47:00 * SSMIS-17 85-92GHz 55.0 -18.07 63.30 -18.08 63.29 0.19 0.52 0.90 35.8
20180114 13:58:26 SSMIS-18 85-92GHz 55.0 -18.03 63.16 -18.03 63.18 0.34 0.96 0.20 15.5
20180114 12:23:57 * SSMIS-16 85-92GHz 55.0 -18.15 63.10 -18.15 63.10 0.16 0.45 0.30 80.2
20180114 10:44:15 * SSMI-15 85-92GHz 55.0 -18.20 63.13 -18.20 63.13 0.12 0.35 0.80 72.1
20180114 09:01:19 AMSR2 85-92GHz 55.0 -18.15 63.21 -18.15 63.22 0.14 0.38 0.30 95.7
20180114 09:01:19 * AMSR2 37GHz 55.0 -18.15 63.16 -18.15 63.17 0.12 0.34 0.20 ***
20180114 04:48:00 Metop-A ASCAT 54.0 *** *** *** *** *** *** *** ***
20180114 02:13:00 SSMIS-17 85-92GHz 51.8 -18.12 63.26 -18.11 63.24 0.21 0.60 0.20 42.5
20180114 01:24:09 * SSMIS-18 85-92GHz 51.2 -18.33 63.58 -18.30 63.50 0.19 0.52 0.90 75.0
20180113 23:50:10 SSMIS-16 85-92GHz 49.7 -18.15 63.25 -18.16 63.26 0.28 0.80 0.20 43.2
20180113 20:49:35 AMSR2 85-92GHz 44.7 -18.20 63.50 -18.21 63.51 0.20 0.55 0.40 73.9
20180113 20:49:35 AMSR2 37GHz 44.7 -18.25 63.44 -18.26 63.45 0.20 0.57 0.20 ***
20180113 19:51:39 * GMI 85-92GHz 43.1 -18.28 63.42 -18.27 63.40 0.19 0.54 0.40 50.2
20180113 19:51:39 GMI 37GHz 43.1 -18.33 63.69 -18.32 63.67 0.22 0.63 2.60 ***
20180113 17:36:00 Metop-A ASCAT 40.0 -18.15 63.52 -18.14 63.53 0.17 0.49 *** ***
20180113 16:54:00 * Metop-B ASCAT 40.0 -18.17 63.62 -18.19 63.59 0.15 0.43 *** ***
20180113 15:00:29 SSMIS-17 85-92GHz 40.0 -17.93 63.99 -17.89 64.03 0.28 0.78 1.80 3.9
20180113 14:10:44 * SSMIS-18 85-92GHz 40.0 -18.06 64.15 -18.09 64.12 0.18 0.50 1.30 44.4
20180113 11:00:06 SSMI-15 85-92GHz 39.2 -18.09 64.37 -18.11 64.31 0.49 1.39 1.60 2.1
20180113 06:36:40 * GMI 85-92GHz 35.5 -17.36 65.15 -17.31 65.30 0.36 1.02 0.50 35.6
20180113 06:36:40 GMI 37GHz 35.5 -17.96 64.84 -17.91 64.98 0.51 1.44 1.70 ***
20180113 05:06:00 Metop-A ASCAT 35.0 -17.52 65.15 -17.54 65.10 0.15 0.44 *** ***
20180113 04:24:00 * Metop-B ASCAT 35.0 -17.58 65.22 -17.65 65.10 0.15 0.42 *** ***
20180113 02:26:17 * SSMIS-17 85-92GHz 35.0 -16.73 65.38 -16.74 65.37 0.17 0.47 3.00 -2.4
20180113 01:36:01 * SSMIS-18 85-92GHz 35.0 -16.76 65.48 -16.83 65.38 0.16 0.46 3.00 6.5
20180112 22:27:08 * SSMI-15 85-92GHz 35.0 -16.60 65.54 -16.65 65.34 0.26 0.75 0.10 17.5

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

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