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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
20250804 16:31:07 SSMIS-18 85-92GHz 30.6 *** *** *** *** *** *** 3.00 ***
20250804 14:47:35 * AMSR2 85-92GHz 31.3 43.15 171.31 43.14 171.15 0.63 1.77 3.00 0.0
20250804 14:47:35 AMSR2 37GHz 31.3 *** *** *** *** *** *** 3.00 ***
20250804 02:50:07 AMSR2 37GHz 38.5 *** *** *** *** *** *** 3.00 ***
20250803 23:51:00 Metop-C ASCAT 41.8 *** *** *** *** *** *** *** ***
20250803 22:28:26 GMI 85-92GHz 43.4 *** *** *** *** *** *** 3.00 ***
20250803 22:28:26 GMI 37GHz 43.4 *** *** *** *** *** *** 3.00 ***
20250803 20:12:26 SSMIS-16 85-92GHz 45.0 42.62 162.27 42.65 162.41 0.54 1.53 0.80 3.4
20250803 19:52:40 * SSMIS-17 85-92GHz 45.0 42.19 160.57 42.25 160.86 0.50 1.43 0.10 0.6
20250803 18:27:02 SSMIS-18 85-92GHz 45.0 *** *** *** *** *** *** 2.60 ***
20250803 15:43:48 AMSR2 85-92GHz 46.9 41.21 159.52 41.04 158.95 0.35 0.99 1.00 4.4
20250803 15:43:48 * AMSR2 37GHz 46.9 41.66 158.98 41.49 158.41 0.33 0.94 1.10 ***
20250803 10:48:00 Metop-A ASCAT 50.0 *** *** *** *** *** *** *** ***
20250803 09:57:00 * Metop-C ASCAT 50.0 40.96 156.43 40.79 155.72 0.16 0.45 *** ***
20250803 07:53:18 SSMIS-16 85-92GHz 50.0 40.10 155.65 40.17 155.96 0.42 1.18 1.20 1.3
20250802 23:13:27 GMI 85-92GHz 50.6 39.55 151.01 39.59 151.16 0.26 0.74 1.10 12.5
20250802 23:13:27 * GMI 37GHz 50.6 39.60 150.75 39.64 150.90 0.16 0.45 0.40 ***
20250802 20:08:17 SSMIS-17 85-92GHz 53.2 39.27 149.65 39.33 149.82 0.31 0.88 1.50 6.7
20250802 18:41:58 SSMIS-18 85-92GHz 55.0 39.04 148.59 38.88 148.10 0.20 0.58 1.40 30.5
20250802 16:40:10 AMSR2 85-92GHz 55.0 38.99 147.64 39.09 147.96 0.19 0.53 0.80 53.4
20250802 16:40:10 * AMSR2 37GHz 55.0 39.09 147.70 39.19 148.02 0.15 0.43 0.30 ***
20250802 08:06:47 SSMIS-16 85-92GHz 55.0 37.65 144.89 37.70 145.00 0.35 0.98 0.20 6.2
20250802 07:46:20 SSMIS-17 85-92GHz 55.0 37.55 144.73 37.65 144.94 0.57 1.62 0.30 1.0
20250802 06:20:06 * SSMIS-18 85-92GHz 55.0 37.26 144.22 37.13 144.00 0.26 0.72 1.10 35.8
20250801 23:53:26 GMI 85-92GHz 55.0 36.43 142.64 36.36 142.58 0.16 0.46 1.10 50.0
20250801 23:53:26 * GMI 37GHz 55.0 36.38 142.52 36.31 142.45 0.10 0.27 0.70 ***
20250801 23:48:00 Metop-A ASCAT 55.0 *** *** *** *** *** *** *** ***
20250801 20:23:46 * SSMIS-17 85-92GHz 55.0 35.63 142.00 35.65 142.01 0.17 0.48 1.30 84.5
20250801 18:57:41 SSMIS-18 85-92GHz 55.0 35.58 141.69 35.32 141.54 0.26 0.74 2.00 28.7
20250801 15:58:26 AMSR2 85-92GHz 56.7 34.99 141.32 34.76 141.17 0.17 0.48 1.30 76.5
20250801 15:58:26 * AMSR2 37GHz 56.7 34.74 141.32 34.51 141.17 0.14 0.39 0.60 ***
20250801 12:15:00 * Metop-C ASCAT 60.0 34.43 141.18 34.34 141.18 0.20 0.56 *** ***
20250801 11:24:00 Metop-A ASCAT 59.5 *** *** *** *** *** *** *** ***
20250801 08:19:38 * SSMIS-16 85-92GHz 56.9 34.05 141.54 34.07 141.54 0.23 0.64 0.90 56.9
20250801 06:33:10 SSMIS-18 85-92GHz 55.0 33.68 141.37 33.54 141.37 0.48 1.34 1.30 5.9
20250801 03:55:23 AMSR2 85-92GHz 55.0 33.41 141.74 33.10 141.86 0.24 0.68 0.80 57.0
20250801 03:55:23 * AMSR2 37GHz 55.0 33.06 141.50 32.75 141.62 0.15 0.43 1.00 ***
20250801 00:57:00 Metop-C ASCAT 55.0 32.63 141.52 32.36 141.61 0.15 0.41 *** ***
20250801 00:38:26 GMI 85-92GHz 55.0 32.92 141.84 32.71 141.91 0.19 0.54 0.70 74.6
20250801 00:38:26 * GMI 37GHz 55.0 32.57 141.60 32.36 141.67 0.14 0.38 0.90 ***
20250801 00:06:00 Metop-A ASCAT 55.0 *** *** *** *** *** *** *** ***
20250731 20:39:00 SSMIS-17 85-92GHz 49.4 32.18 142.05 32.15 142.06 0.14 0.41 0.70 83.6
20250731 19:12:10 * SSMIS-18 85-92GHz 47.0 31.87 142.06 32.05 142.00 0.13 0.37 0.90 95.6
20250731 16:54:38 AMSR2 85-92GHz 45.0 31.50 141.99 31.59 141.96 0.21 0.58 1.00 67.1
20250731 16:54:38 * AMSR2 37GHz 45.0 31.50 141.81 31.59 141.78 0.09 0.24 0.70 ***
20250731 14:48:27 GMI 85-92GHz 45.0 31.28 141.94 31.23 141.95 0.21 0.61 0.90 50.3
20250731 14:48:27 * GMI 37GHz 45.0 31.33 142.05 31.28 142.07 0.09 0.26 0.70 ***
20250731 11:45:00 * Metop-A ASCAT 45.0 30.87 142.20 30.83 142.21 0.16 0.45 *** ***
20250731 10:57:00 Metop-C ASCAT 45.0 *** *** *** *** *** *** *** ***
20250731 08:32:22 SSMIS-16 85-92GHz 45.0 30.35 142.60 30.34 142.60 0.23 0.65 1.20 30.0
20250731 08:12:43 * SSMIS-17 85-92GHz 45.0 30.56 142.68 30.59 142.67 0.21 0.60 0.70 30.9
20250731 01:18:27 GMI 85-92GHz 48.9 30.08 143.01 30.09 142.95 0.21 0.60 1.10 50.9
20250731 01:18:27 * GMI 37GHz 48.9 29.98 142.78 29.99 142.72 0.10 0.28 0.60 ***
20250731 00:27:00 Metop-A ASCAT 50.2 *** *** *** *** *** *** *** ***
20250730 23:39:00 Metop-C ASCAT 49.7 *** *** *** *** *** *** *** ***
20250730 21:12:54 SSMIS-16 85-92GHz 47.7 30.10 143.30 29.99 143.35 0.23 0.64 1.50 59.1
20250730 20:53:34 * SSMIS-17 85-92GHz 47.4 29.95 143.21 29.89 143.23 0.15 0.43 1.50 76.8
20250730 16:12:17 AMSR2 85-92GHz 43.5 29.29 143.20 29.37 143.20 0.22 0.62 1.30 46.4
20250730 16:12:17 AMSR2 37GHz 43.5 29.34 143.20 29.42 143.20 0.19 0.54 0.50 ***
20250730 15:33:27 GMI 85-92GHz 43.0 29.30 143.26 29.25 143.26 0.30 0.86 0.70 45.2
20250730 15:33:27 * GMI 37GHz 43.0 29.30 143.20 29.25 143.20 0.13 0.38 0.40 ***
20250730 08:45:26 * SSMIS-16 85-92GHz 40.0 28.64 143.30 28.64 143.31 0.22 0.64 1.70 19.6
20250730 04:06:32 AMSR2 85-92GHz 40.0 28.52 143.01 28.58 143.12 0.22 0.63 0.40 32.6
20250730 04:06:32 * AMSR2 37GHz 40.0 28.62 143.07 28.68 143.18 0.17 0.48 0.40 ***
20250728 21:40:34 * SSMIS-16 85-92GHz 50.0 28.19 142.75 28.10 142.76 0.31 0.86 1.80 15.8
20250728 18:14:35 * SSMIS-18 85-92GHz 50.0 28.07 143.09 28.01 143.12 0.23 0.65 1.80 38.0
20250728 16:24:43 AMSR2 85-92GHz 52.6 27.75 143.08 27.86 143.01 0.27 0.75 2.20 16.9
20250728 16:24:43 * AMSR2 37GHz 52.6 28.00 143.36 28.11 143.29 0.12 0.33 0.80 ***
20250728 15:23:27 GMI 85-92GHz 54.3 27.54 143.14 27.44 143.24 0.27 0.78 1.80 25.7
20250728 15:23:27 GMI 37GHz 54.3 27.89 143.48 27.79 143.58 0.22 0.63 0.70 ***
20250728 11:57:00 * Metop-C ASCAT 60.1 27.40 143.59 27.42 143.64 0.16 0.45 *** ***
20250728 09:13:00 SSMIS-16 85-92GHz 64.6 27.34 143.93 27.55 144.03 0.35 0.98 0.80 3.4
20250728 05:45:52 SSMIS-18 85-92GHz 70.4 *** *** *** *** *** *** 1.40 ***
20250728 01:53:27 GMI 85-92GHz 76.8 26.36 144.95 26.76 144.87 0.15 0.42 1.60 38.0
20250728 01:53:27 * GMI 37GHz 76.8 26.31 144.89 26.71 144.82 0.13 0.37 0.90 ***
20250728 00:42:00 * Metop-C ASCAT 78.8 26.13 145.00 25.70 145.05 0.13 0.38 *** ***
20250727 23:51:00 Metop-A ASCAT 80.0 25.37 144.87 25.27 144.88 0.19 0.53 *** ***
20250727 18:29:26 * SSMIS-18 85-92GHz 80.0 24.81 145.34 24.56 145.36 0.12 0.33 1.40 99.1
20250727 16:03:26 GMI 85-92GHz 73.5 *** *** *** *** *** *** 3.00 ***
20250727 16:03:26 GMI 37GHz 73.5 *** *** *** *** *** *** 0.60 ***
20250727 15:42:47 AMSR2 85-92GHz 72.4 24.03 145.30 23.66 145.32 0.15 0.42 0.90 82.2
20250727 15:42:47 * AMSR2 37GHz 72.4 23.78 145.30 23.41 145.32 0.11 0.32 0.50 ***
20250727 11:27:00 * Metop-A ASCAT 60.0 22.64 145.17 22.65 145.18 0.17 0.47 *** ***
20250727 05:58:23 * SSMIS-18 85-92GHz 60.0 21.54 145.38 21.44 145.38 0.11 0.30 0.60 94.8
20250727 03:33:37 AMSR2 85-92GHz 60.0 21.06 145.30 20.81 145.33 0.29 0.82 1.20 52.7
20250727 03:33:37 AMSR2 37GHz 60.0 21.21 145.09 20.96 145.12 0.19 0.53 0.30 ***
20250727 02:38:26 GMI 85-92GHz 60.0 20.95 145.17 20.91 145.17 0.26 0.72 1.10 53.1
20250727 02:38:26 * GMI 37GHz 60.0 21.00 145.11 20.96 145.12 0.13 0.36 0.60 ***
20250727 00:15:00 Metop-A ASCAT 60.0 *** *** *** *** *** *** *** ***
20250726 23:24:00 Metop-C ASCAT 59.5 *** *** *** *** *** *** *** ***
20250726 18:44:25 * SSMIS-18 85-92GHz 55.0 19.37 144.99 19.19 144.93 0.51 1.44 0.90 2.0
20250726 11:45:00 * Metop-A ASCAT 50.0 18.47 144.48 18.44 144.47 0.12 0.33 *** ***
20250726 06:11:36 SSMIS-18 85-92GHz 50.0 18.61 144.22 18.59 144.17 0.45 1.28 2.20 4.1
20250725 23:48:00 * Metop-C ASCAT 49.8 17.79 143.74 17.79 143.72 0.12 0.33 *** ***
20250725 23:45:00 Metop-C ASCAT 49.8 *** *** *** *** *** *** *** ***
20250725 18:58:54 * SSMIS-18 85-92GHz 45.0 17.70 143.39 17.70 143.38 0.22 0.61 2.30 24.0
20250725 15:56:48 AMSR2 85-92GHz 45.0 17.83 143.38 17.86 143.48 0.26 0.74 2.10 24.0
20250725 15:56:48 * AMSR2 37GHz 45.0 17.63 143.38 17.66 143.48 0.14 0.40 1.60 ***
20250725 15:53:27 GMI 85-92GHz 45.0 17.78 143.43 17.81 143.53 0.21 0.61 2.00 42.4
20250725 15:53:27 GMI 37GHz 45.0 17.63 143.33 17.66 143.43 0.14 0.41 1.70 ***
20250725 11:15:00 * Metop-C ASCAT 44.4 17.54 143.55 17.55 143.56 0.11 0.32 *** ***
20250725 06:25:47 SSMIS-18 85-92GHz 40.0 17.23 143.25 17.16 143.25 0.56 1.58 0.50 1.7
20250725 03:44:46 AMSR2 85-92GHz 40.0 17.16 143.44 17.08 143.47 0.54 1.52 0.10 1.1
20250725 03:44:46 AMSR2 37GHz 40.0 17.16 143.17 17.08 143.21 0.32 0.90 0.60 ***
20250724 23:18:00 * Metop-A ASCAT 39.4 16.93 143.32 16.95 143.33 0.12 0.34 *** ***
20250724 23:15:00 * Metop-A ASCAT 39.4 16.92 143.32 16.95 143.32 0.12 0.34 *** ***
20250724 20:41:21 SSMIS-17 85-92GHz 37.2 16.39 143.11 16.36 143.10 0.39 1.10 1.00 4.2
20250724 16:33:26 GMI 85-92GHz 33.8 15.95 143.09 15.95 143.05 0.28 0.80 1.40 15.6
20250724 16:33:26 * GMI 37GHz 33.8 16.10 142.88 16.10 142.84 0.23 0.66 1.40 ***
20250724 10:45:00 Metop-A ASCAT 30.0 *** *** *** *** *** *** *** ***
20250724 08:23:04 SSMIS-16 85-92GHz 30.0 *** *** *** *** *** *** 3.00 ***
20250724 08:07:09 * SSMIS-17 85-92GHz 30.0 15.55 142.67 15.63 142.67 0.43 1.22 2.20 2.8
20250724 06:38:49 SSMIS-18 85-92GHz 30.0 15.28 143.60 15.04 143.60 0.59 1.67 2.30 0.2
20250724 03:13:26 GMI 85-92GHz 30.0 *** *** *** *** *** *** 3.00 ***
20250724 03:13:26 GMI 37GHz 30.0 *** *** *** *** *** *** 3.00 ***
20250724 00:30:00 * Metop-C ASCAT 30.0 14.45 143.60 14.30 143.63 0.24 0.67 *** ***
20250723 21:12:04 SSMIS-16 85-92GHz 27.7 *** *** *** *** *** *** 0.90 ***
20250723 20:56:32 * SSMIS-17 85-92GHz 27.5 13.59 143.34 13.55 143.38 0.51 1.44 1.70 2.0
20250723 16:10:14 * AMSR2 85-92GHz 25.0 13.37 143.74 13.50 143.63 0.46 1.30 0.30 4.3
20250723 16:10:14 AMSR2 37GHz 25.0 13.67 144.30 13.80 144.19 0.48 1.36 2.70 ***

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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